NATC has on-site capability to evaluate fuel consumption for on- and off-road vehicles using gasoline, diesel, or military fuels, over the full duty cycle of the vehicle. We can provide a user-representative drive cycle, as well as work with the customer to develop the drive cycle based on a prescribed duty cycle, to create a test route to emulate the drive cycle/speed profile. NATC has data/duty cycles for a broad range of worldwide vehicle operations to assist in the development of these duty/drive cycles. Electric and hydraulic load banks are available to simulate additional power consumption.

Test capabilities include measurement of vehicle operating conditions such as:

• Effects of the warm-up period
• Extreme temperatures
  • High desert environment with natural diurnal temperature changes
  • On-site environmental chambers that provide a range of temperature, solar, and humidity conditions

Idle fuel consumption testing can be completed both in neutral and in drive (simulating conditions at stop signs and in traffic congestion, etc.) to quantify the effect of additional torque conversion or similar component drag. Idle fuel consumption testing is typically performed independently so the idle time may be factored in or out of the overall duty cycle as necessary.

NATC can provide:

• Overall fuel consumption
• Distance per weight or volume of fuel used
• Weight or volume of fuel used per unit time where instantaneous fuel consumption measurement is required

To measure fuel consumption, NATC has developed a robust on-board fuel consumption measurement system (OFCMS) that is ruggedized for use in severe duty environments from on-highway to off-road and cross-country conditions. Our systems are designed to function in these non-laboratory conditions using an integrated, positive pressure pump, a built-in deaerator, and large fuel filters to keep clean, single-phase flow. Our system can provide continuous measurement of fuel consumption rates on vehicles using petroleum-based fuels, from small passenger vehicles to large commercial and military vehicles. The OFCMS has been validated and verified to a cumulative error of within 2% in these severe conditions for repeatability and precision of the instantaneous measurement by comparing the cumulative fuel through the meter to fuel consumption measured using a gravimetric method.

To ensure repeatable results, NATC’s test methodology maintains the prescribed acceleration and speed continuously over the route, resulting in a less than 3% coefficient of variation.

Measuring on-board fuel consumption has a number of advantages over solely measuring aggregate fuel used over a test run. Individual road segments can be “picked out” of a test run allowing fuel consumption data to be processed for specific conditions, for instance on a 5% grade, or other surface conditions that influence motion resistance, transmission shift points, or other operational parameter. These data can then be used to inform shift schedules, determine efficient speeds for different conditions, and quickly evaluate the advantages and disadvantages of vehicle system or operational changes, etc.

NATC has the necessary test course profiles (surface roughness, texture, grades, etc.) for on- and off-road to simulate worldwide user environments and applications. Drive cycles applicable to light and medium duty trucks, heavy trucks, buses, and other vocational vehicle platforms can be developed by working with the customer and using NATC’s North America and International duty cycle data as appropriate for fuel economy evaluation.

Fuel Consumption Testing Labs Nevada | Automotive Fuel Economy Tests

NATC can help reduce the development time of a vehicle and still provide real-world testing through an approach called “accelerated life testing.” Drawing on experience in duty cycle development, durability testing, and road profiling, NATC developed and derived a mathematical accelerated life cycle testing approach for a U.S. Air Force nuclear transport vehicle in 1992. Since that time, we have validated this approach through application to numerous commercial and military vehicles.

Each accelerated test design is tailored to the vehicle’s anticipated service environment. Representative road-induced dynamic load conditions are then produced at acceleration factors anywhere from 3:1 to 100:1, depending upon the service environment. A 100:1 acceleration factor means that every mile in NATC’s accelerated test environment equates to the same level of dynamic input (fatigue inducing loads) as 100 miles in the real-world service environment. Our analysis of a vehicle duty cycle, in accelerated test mode, is based on accurate measurements of the road roughness conditions, vehicle speeds, environmental conditions, vehicle payloads, operator driving styles, and other variables.

We utilize direct and remote sensing measurements from the user environment and compare those results with contact and non-contact measurement of terrain roughness, slope, moisture content, vegetation, roughness, and other parameters to correlate with the test environment.  Vehicle speeds and other duty cycle parameters complete the analysis. Based on the intended user, other parameters such as fuel quality, tire pressure, trailer type, etc. have to be integrated into the test scenario.

After the duty cycle requirements have been defined, the terrain roughness and associated mobility requirement data are used to design an accelerated life cycle test to evaluate the performance of the test vehicle within the requirements of the duty cycle but in a manner that reduces the distance and time required to accumulate the same level of damaging energy to the vehicle or component.  Using the terrain and test course  profiles, combined with specific test controls (speed, gear position, steering maneuvers, component cycling, payload cycling, cumulative repetitive events such as braking, railroad crossing, pothole impact, etc.), it is possible to develop an accelerated test that focuses on the specific component, validating that component, while  eliminating excess or non-interest events.

The terrain profile and user analysis allows test scenarios to be established quickly without extensive vehicle instrumentation or operation over extended miles or cycles to establish a baseline. Additional advantages of this methodology include:

• Comparisons of terrain roughness for world-wide environments to the test environment can be completed in a vehicle-independent format – identifying the range of conditions in which the vehicle must operate.
• The specific damaging energy or events to the vehicle system or component of interest can be identified accurately. The test scenario is then developed and the data utilized to validate the system or the corrective action to the vehicle and for the impact on overall life cycle cost to be predicted in support of longer term operational and logistics decisions.

The user terrain and associated test course roughness and condition data, typically referred to as profile data, are maintained at NATC and updated based on commercial and DoD related efforts worldwide.

Vehicle speed and road roughness are inseparable terms for defining vehicle inputs, so an analysis of road roughness must also include vehicle speed.  For example, 1- to 100-foot wavelengths on a smooth pavement traveled at 68 MPH (100 fps) represents vehicle inputs between 1 and 100 Hz. Those same wavelengths on a rough trail traveled at 27 MPH (40 fps) represent vehicle inputs between 0.4 and 40 Hz.  A test design must consider both road roughness and vehicle speed.

Correlation of test results to field use results is best when the types of roughness, soil conditions, grades, etc. match between the test and user environments.  NATC combines these loads with environmental loads to more accurately simulate a system’s service life.  Another critical control parameter is that the roughest test course used to accelerate the test is not rougher than the roughest terrain in the user environment.  This helps to ensure that, while the frequency of the more severe conditions is provided during an accelerated test, the severity of the events does not exceed the operational requirements thereby reducing the potential for an over test situation.  Therefore, the “ideal” objective of any accelerated test design is to match the energy between the user and test environments in terms of vertical, lateral, and longitudinal inputs (load and frequency) and to do so without violating the linearity or transfer function relationships of the vehicle.

NATC also combines environmental loads with the road-induced dynamic loads.  The effects of corrosion, temperature, humidity, rain, and solar radiation can be combined with the accelerated durability test cycle.  The reason for combining environmental tests with the durability is that almost all service environments have some degree of interaction or synergistic effects between dynamic loads and environmental loads.

Overall, accelerated life testing provides an avenue for vehicle and component manufacturers to complete durability and mileage accumulation testing in an expedited manner in order to determine what components on a vehicle system may fail, and when, to support life cycle cost predictions, warranty claim analysis, and production verification for prototype systems. NATC understands and is knowledgeable about vehicle development and real world testing and has the facilities and experience to duplicate service life failures in a short time.

Contact us today to discuss how NATC can assist you.

Today, electric drives are used in vehicles to increase fuel economy, reduce environmentally harmful emissions, provide lower life cycle costs, and more. NATC has been working with hybrid electric and electric vehicles since 1996, and we have designed and built mild, parallel, and series hybrid vehicles. We are well versed at evaluating and testing hybrid vehicle performance. Durability, end-limit performance, cooling, electrical performance, and EMI/EMC are all evaluations inherent to the capabilities that NATC encompasses.

Our work with the U.S. Military includes creating specialized test plans and conducting tests and evaluations of a number of different hybrid platforms, from a Hybrid Electric M1037 HMMWV to a Heavy Expanded Mobility Tactical Truck (HEMTT) with a ProPulse® hybrid electric drive (HED) system. In addition, we designed and built a 6×6 hybrid electric platform (HEP), which used a 100 kW diesel engine and generator with independent drive motors at each of its six wheels. Power for electric operation was stored in a battery pack. The HEP drive motors allowed for steering through differential speeds from side to side, creating a skid steer effect that made the vehicle very maneuverable in tight spaces.

We also have worked with several companies in the emerging commercial electric vehicle industry. NATC understands and is knowledgeable about the configurations and requirements and can help develop a test plan for evaluations. Furthermore, we can assist in modifying systems design to meet these standards.

Contact us today to discuss how NATC can assist you.

Hybrid Development and Testing

NATC excels at developing and executing myriad transportability evaluations. We expose test article systems and their integral transport provisions to real-world static and dynamic loads, often simulating worst-case loads the test article is expected to experience throughout its operational life cycle. Transportability features of a component are inherent to the system as a whole and should be evaluated and scrutinized as these features may dictate the safe and efficient movement of the article.

Forces experienced during transport are not limited to longitudinal, lateral, and vertical directions or to tiedown and lifting provisions and their surrounding structure. Forces affect the test article as a whole in the form of shock and vibration, which are often experienced during rail transport. We have a fully functional rail impact facility consisting of a flatcar, yard locomotive and three buffer cars. We record impact speeds and parameters such as acceleration, strain, and displacement, among others.

NATC conducts road, rail, ship or transportability evaluations in accordance with guidance provided within ASTM E1925, MIL-STD-209, MIL-STD-810, MIL-STD-913, TEA Pamphlet 55-19, and the Association of American Railroads.

Aircraft Roll-on Roll-off

In cooperation with the Nevada Air National Guard out of Reno, Nevada and the Nevada Army National Guard out of Stead, Nevada, we perform “Roll-on Roll-off” evaluations where a test article is driven onto and off of either a C-130 military transport aircraft or a Chinook CH-47 tandem rotor aircraft. This enables inspection of the test article for any potential issues such as tight clearances that may inhibit its ability to be transported within that particular aircraft.

Drop Test

Vehicles and most other material that require some form of transit to their final destinations may be exposed to whole system shock events as a result of being dropped at some point along their journey. Therefore, we conduct various “shock” or “transit drop” tests ranging from heights of 6 inches up to 18 inches off the ground, depending on customer requirements.

Transportability – Aircraft Roll-on Roll-off, Ship Transportability Evaluations

NATC’s Winter Test Facility is a premier winter proving ground located in West Yellowstone, Montana. Available from November 15 to April 15 each year, our winter facility offers optimal winter test conditions from December through March, with approximately two million square feet of groomed test surfaces, expanded facilities and infrastructure.

Learn more about our winter testing capabilities

View the 2019-2020 Winter Test Brochure

NATC performs a variety of Situational Awareness (SA) evaluations to assess the ability of the vehicle occupants to acquire knowledge of the immediate environment, whether internal or external to the vehicle. Generally, these evaluations consider three factors: the observer’s viewpoint, the observer’s ability to gather useful information, and the observer’s ability to correctly interpret the information gathered. Our SA tests and evaluations involve multiple vehicle subsystems including direct vision (windows, hatches, view blocks), indirect vision (cameras, displays), embedded sensors, communications (intercom, microphones), and collateral vehicle information (traffic), which may be measured independently or evaluated as an aggregate system.

We offer complete SA systems design engineering to address issues such as visual acuity, detection distance, threat recognition, speed over a terrain segment, motion sickness, image stability, vision system parameters including resolution, update rate, latency and field of view.

Since the early 2000s, we have designed hardware, software, and methods to measure visual system performance including object recognition, terrain estimation performance of a standard multi-camera situational awareness system, traversal performance of manned and unmanned vehicles across terrain, vehicle operator and commander performance, and target recognition and time on target. Additionally, we have worked with the VICTORY community to develop more robust information assurance techniques suitable for a DOD environment.

SA evaluations we perform include:

• Human factors in association with presented information, including:
  • Performance
  • Accuracy
  • Communications
  • Action speed and fidelity measurements
  • Communications intelligibility, spatialization / aural SA
  • Target / threat / obstacle / object identification
  • Emesis evaluations
• Vision Studies (indirect, direct, sensor fusion)
• Logistics performance (fuel, ammunition status)
• Collision avoidance / warning
• Vehicle system health – Diagnostics, prognostics, alerts
• Dynamics – Stabilization, target tracking
• Local – Terrain, obstacles, pedestrians, threats, dismounted personnel
• Global – Other friendly units, support elements, enemy forces

NATC rigorously tests the electronic and electrical systems that are essential to the safe and proper operation of every new vehicle that rolls off the production line. These systems constantly increase in complexity, and we are committed to making sure that every unforeseen circumstance and behavioral anomaly is accounted for when proving that electronic systems will operate correctly. Our veteran team and purpose-built test equipment can test for many issues that may not be witnessed during normal production or shakedown testing operations.

We work closely with our customers to determine the expected functionality of a product or system. Gaining a thorough understanding of a system is necessary for proper evaluation. Our team builds customized benches, chambers, or on-vehicle evaluation setups in a benign environment, simulating real-world operations with great fidelity.

Monitoring the bench tests gives us a complete, end-to-end picture of the system, which we then stress via noise, part failure, power cycling, environmental exceedances, etc. We closely examine all available signals to see where failures occur and what events cause them. After identifying points of failure, our team determines a customized solution to address them.

Whether our customers need a simple load test on an alternator, EMI testing on a prototype, a bench mockup with a custom graphical user interface for ease of use, or any other requirement, our skilled team of electronics and software engineers and technicians can develop the right solution.

NATC’s trained, experienced staff conduct tests for commercial and military vehicles in accordance with regulatory and industry standards. Some of the standardization bodies include NHTSA, FMCSA, SAE, US DoD, DoE, Transport Canada, ISO, NATO and UNECE. We provide guidance to our customers for navigating various standards and, in some cases, develop specific tests to cover multiple standards in a single test to reduce the overall number of testing cycles required.

We perform standardized tests precisely in accordance with the test plans developed by government or commercial entities. Additionally, we consult the government or commercial entity regarding any ambiguity or special circumstances not covered under the test plans to ensure that the test results we provide can be used to satisfy the self-certification process for any vehicle tested at NATC. Vehicles exempt from certain regulations may still be tested in accordance with the applicable portions of the regulations. Further, we provide homologation assistance for vehicle sales in North American markets to determine which requirements need to be met for a specific vehicle type.

Standardized tests we conduct include, but are not limited to, the following.

• FMVSS: 105, 111, 121, 122, 135, 136, 210, 216, 223, and 224
  (For our Canadian customers, we conduct similar tests to the corresponding CMVSS.)
• SAE: AS8090, J47, J88, J260, J336, J374, J384, J872, J880, J1040, J2014, J2180, J2181, J2188, J2721
• ISO 2631, 18106
• ASTM: F1805, F1922
• TOP: 1-2-501, 2-2-002, 2-2-500, 2-2-501, 2-2-602, 2-2-604, 2-2-607, 2-2-610,
  2-2-611, 2-2-800, 3-2-812
• ITOP 1-2-505
• MIL-STD-810, MIL-STD-209, MIL-STD-1472
• NATO AVTP: 03-30, 03-160

View our complete Standardized Test List. Read more about our standardized Transportability, Tire Testing and Winter Testing.

Standardized Brake Testing

NATC conducts brake tests on vehicles ranging from motorcycles to class 8 trucks, with the objective of these tests ranging from developmental testing to compliance testing for government agencies such as NHTSA. We perform brake tests to FMVSS, EC/ECE, ISO, SAE, ASTM, California Title 21, or other specifications as defined by our customers.  We also offer specific, customized, brake tests for vehicle development, accident reconstruction/investigation, corrosion, and other customer needs.

Brake testing that is not in accordance with a government standard may use the same instrumentation and/or portions of the procedures as a baseline.  Additional instrumentation may include steering response, position transducers, or additional pressure or temperatures sensors. If a customer has specific areas of concern, we develop a test plan to target those characteristics, such as  braking during a variety of long mountain descents.

Tilt Table Testing

Designed and built in-house by NATC engineering and fabrication personnel, the tilt table augments NATC’s vehicle dynamics testing capabilities. These capabilities include, but are not limited to, handling, roll stability quantification, end limit performance, side slope operation, fork lift capability, active suspension development, and a multitude of standardized tests in accordance with regulatory and industry standards. We conduct evaluations to determine the static lateral stability and rollover thresholds of the test article as well as roll characteristics based on chassis stiffness, and to estimate lateral acceleration. Testing may include vehicle component operation such as boom or water cannon operation. The same types of tests can be conducted on non-vehicular products such as shelters, skid-mounted assemblies, and containerized assemblies and systems.

Equipped with a high friction surface to inhibit sliding of the test vehicle, the tilt table rotates at a rate of approximately 0.09 degrees per second to determine the static roll properties of the vehicle and to prevent abrupt roll input into the test vehicle. With a surface area of more than 800 square feet and a lifting capacity of approximately 350,000 pounds, the tilt table can be used for many types and sizes of vehicles up to and including buses, tractor-trailer rigs, crash-fire rescue apparatus, ambulances, and heavy equipment used in construction, material handling, mining, and agriculture.

NATC Tilt Table Specifications
Length: 89 feet
Width: 9 feet (expandable to 12 feet)
Maximum Tilt Angle: 60 degrees
Surface Area: 800 square feet
Tilt Rate: 0.09 degrees/second
Angle Accuracy: + 0.1 degree
Net Lift Capacity: 350,000 pounds
Lifting Mechanism: Worm gearbox and synchronized precision screw jacks

NATC performs Human Factors Engineering (HFE) evaluations for the fifth percentile female through the 95 percentile male, on vehicle platforms varying from passenger cars to 40-ton tracked vehicles. Our HFE assessments include, but are not limited to, occupant field of view, body position while seated, ingress, egress, lever position, pedal angle, pedal application force, step height, handholds, and internal and external noise levels. We provide our customers with measured data, thorough subjective feedback on the assessed items, as well as photography and videography documentation of the actions performed. We use numerous standards to conduct HFE testing, such as TOP 1-2-610 Human Factors Engineering, SAE J985 Vision Factors Considerations in Rearview Mirror Design and MIL-STD-1472 Human Engineering.

Other evaluations we conduct include door and hatch operations on grades and side slopes, optimization of operator control and instrumentation arrangement, and seat belt/restraint function and compliance. Whenever our customers require it, we are ready to tailor the evaluations to satisfy a customer’s end goal for these and numerous other HFE evaluations.

Human Factors Engineering (HFE) Passenger Cars to 40-Ton Tracked Vehicles

NATC develops user evaluations based on our extensive experience as vehicle operators, training instructors, and test engineers. The evaluations provide an all-encompassing curriculum that prepares users not only for driving the vehicles, but also for understanding the vehicle-to-terrain interface and how to apply that understanding to performance specifications or requirements. Our standard user evaluation courses typically last from one-to-10 days. The courses range from basic driver and trail experiences up to long-range vehicle movements in combination with up-front operator training such as ROHVA UTV classes, tire-blowout training, obstacle avoidance, terrain recognition, off-road driving, rock crawling and high-speed training. We have a highly skilled staff of engineers and mechanics to keep the vehicles in top working order.

Our user evaluation training provides a comprehensive evaluation atmosphere that is dedicated to improving the vehicle program overall by enhancing understanding of the interaction between driver, vehicle system, and terrain. We have the advantage of a vast test facility with access to over 6,200 acres of proving grounds, 735 acres of snow and ice covered terrain in West Yellowstone, MT, and local access to Sand Mountain Recreation Area, a two-mile-long sand dune. With these facilities, we have the ability to replicate most any terrain required for a well-rounded and complete user evaluation program. Whether our customers desire high-performance/high-speed operation or virgin snow and ice covered roads, we can tailor the evaluation to appropriate needs and objectives. User evaluation group sizes have ranged from four to 40 operators in a single evaluation.

At the completion of each course, students have the knowledge and understanding to apply newly formed skills in real-life situations by using the industry standard techniques developed and taught by NATC. Evaluation courses are available for a wide variety of vehicle operating scenarios, including:

• Private passenger vehicles
• Tactical and combat military vehicles
• Tractor trailer combinations
• Commercial and school buses
• Law enforcement vehicles, fire trucks and ambulances
• Public service vehicles
• Heavy equipment

Vehicle User Evaluations Training

NATC offers numerous environmental test facilities for evaluating operability and material properties of vehicles, subsystems and components in extreme environments. We have environmental and climatic chambers and years of experience performing standard and customized environmental testing. Our chambers are capable of running 24/7 and can achieve cyclic and non-cyclic temperature extremes of -60 °F up to 160 °F (-51 °C to 71 °C) while maintaining a breathable air environment for performing operation checks at temperature. The chambers are reconfigurable and expandable, capable of fitting test articles ranging from small components to oversized vehicles as long as 85 feet. We set up the chambers to create simulated environments and climates with humidity, solar radiation (simulated sunshine), salt fog, dust, rain, ice and snow, as required. We use our wind machine when establishing simulated environments and climates for performing blowing rain, blowing sand and blowing dust evaluations. Furthermore, we configure the chambers to integrate with durability and reliability tests to ensure full vehicle system exposure.

Environmental chamber dimensions:

• Chamber #1 – 16 feet (w) x 16 feet (h) x 54 feet 6 inches (l)
• Chamber #2 – 18 feet 10 inches (w) x 20 feet 6 inches (h) x 32 feet (l)
• Chamber #3 – 8 feet (w) x 6 feet 7 inches (h) x 18 feet 6 inches (l)
• Chamber #4 – 6 feet (w) x 6 feet 10 inches (h) x 5 feet 4 inches (l)
• Chamber #5 – 17 feet (w) x 16 feet (h) x 40 feet (l)

Other environmental and climatic testing capabilities include, but are not limited to, the following.

• Customizable temperature ramping and cycling
• Rampable solar radiation up to 1120 W/m² (simulated sunrise and sunset)
• Temperature shock
• Humidity from two percent up to 100 percent
• Outdoor ambient wind speeds in excess of 100 mph
• Testing to: ASTM, SAE, IEC, EEC/ECE, GM, MIL-STD-810

Commercial testing of air conditioning systems, defrosting/ defogging systems, engine cold and hot starting, tire aging and extreme temperature characterization, vehicle full and road load cooling, and vehicle paint and rust protection coatings can be performed. Sensors and data acquisition equipment are available to measure and record virtually any quantity, frequency and type of test parameter of interest, including (but not limited to) engine, wheel and fan speeds; manifold, coolant and hydraulic line pressures; vehicle component, reservoir, exhaust and surface temperatures; exhaust gas emissions; and fuel, air, lubricant and coolant flow rates. Dedicated data acquisition systems allow up to 250 channels of simultaneous data collection and analysis of both digital and analog signals. NATC designs instrumentation applications to meet customer needs and all necessary instrumentation is available on site, allowing for efficient, “one-stop” testing.

Corrosion Test Chamber

NATC is an industry leader in full-vehicle and component-level accelerated corrosion testing. We use standards created by OEMs, the Department of Defense (DoD) in conjunction with the Office of Naval Research (ONR), and internally developed procedures. We perform accelerated corrosion testing to determine a product’s resistance to corrosion for aesthetics, reliability, reduction of warranty claims and overall life cycle cost. Our corrosion facilities include the environmental chambers, a walk-in sized environmental chamber, various salt spray application devices, and water fording facilities ranging from shallow high-speed splash to deep water. The dedicated corrosion chamber has a pH meter embedded in the salt solution supply line for monitoring and recording pH of the salt solution during each salt fog application. Our specialized vibration courses include Belgian Block, chatter bumps, potholes, washboard, and more. Our full-service accelerated corrosion development programs enable us to identify less than desirable corrosion characteristics prior to releasing an item to market.

Corrosion is one of the more critical and influential variables that contributes to a vehicle’s overall life cycle cost and durability, and we understand the detrimental effects it may have on a vehicle system. When performing durability corrosion testing, we evaluate a test article’s duty cycle and focus on the elements that have the greatest effect on corrosion characteristics. To evaluate those effects, we conduct many corrosion/durability evaluations where discrete over-the-road type corrosion elements are introduced to the test article within its mission profile mileage accumulation. We ensure repeatable results by using standardized coupons during testing to monitor corrosion rate and mass loss.

NATC’s dedicated corrosion chamber:

• Custom design testing
• Component and full vehicle testing
• Dehumidification system
• Controlled storage (ambient) conditions for repeatable storage cycles and controlled ramp times from high to low RH conditions
• Integrated refrigeration system with controlled storage conditions
• Automated salt fog system
• Coupon racks
• Temperature/humidity control
• Conducts corrosion testing to the following standards: GM, MIL-STD-810E/F, ASTM B117, SAE, EEC/ECE, IEC

Automotive Environmental Testing

Corrosion Test Chamber

Environmental Test Chamber

Fully Customized Environmental Testing

NATC engages with our military customers and industry to develop, integrate, and evaluate advanced survivability and lethality technologies. We conduct independent, standardized testing of survivability and lethality solutions, referencing relevant protocols including TOP, ITOP, AEP, ASTM, STANAG, and SAE standards. In addition to assisting our customers in developing their own test regimes to assess and refine their products, we produce timely results to provide fieldable solutions that address current and future threats. Since 1969, NATC has been testing a wide range of small to intermediate caliber munitions and delivery systems from small arms through 122mm and TOW missiles. As mine blast and kinetic energy threats became prevalent events in theater, NATC contributed to advancements in testing procedures within the testing community to evaluate these threats. We continue to build on our significant experience with system and subsystem blast mitigation, lightweighting solutions, active protection technology, armor enhancement, and weapon system development to better serve and protect the war fighter.

NATC’s development and test engineers are agile in designing, integrating and evaluating a range of design and material options for your application, including a variety of armor grade steel, aluminum alloys, advanced lightweight materials, armor arrays and kit solutions. We evaluate both active and passive armor protection against most major direct and indirect fire weapons, as well as fragmentation grenades and fire bombs. We analyze armor protection against unconventional hostile threats and actions. Our design engineers build these solutions in CAD and produce developmental and production level drawings and technical data packages to inform manufacturing processes for system solutions.

NATC performs a variety of engineering and testing services to address survivability and lethality, including the following applications and tools.

• Survivability Testing
  • Mine blast field testing
  • Active blast evaluation and field testing
  • Counter IED threat detection
  • Human factors (HFE) assessment
  • Kinetic energy (KE) threats
  • Detonation of explosive devices
  • Anthropomorphic Test Devices (ATD) data acquisition and injury analysis
  • Dynamic deflection assessment
  • High-speed instrumentation and data acquisition
  • High-speed video acquisition and analysis
    • High speed cameras
      • Vision Research Phantom v7.3 monochrome high-speed camera with 16 bit imaging up to 250,000 fps; shutter speed to one micro-second; 4 GB internal ram
      • Vision Research Phantom R310 high-speed camera with one megapixel, 1280×800 resolution; 5040 fps; shutter speed to microsecond
      • Vision Research Phantom Mirco3 high-speed camera with 4 GB memory; 12 bit depth; 1900 fps; 6.5 mm lens uses C-mount; offers increased ruggedization
• Ballistic testing (5.56 mm through 20 mm FSP and 30 mm KE)
  • Ballistic panel testing
    • Armor panel test fixture with obliquity control up to 60 degrees, panel size up to 48″x 48″x 5″ thick. This fixture can be modified as required for specific test requirements.
  • Vehicle and subsystem exploitation testing
  • Component testing including run-flats, fuel tanks and transparent armor
  • Powder breach ballistic test system with electronic firing mechanism and interchangeable barrels for 5.56 mm, 7.62 mm, .30 cal, 12.7 mm, .50 cal, 14.5 mm, 20 mm and 30 mm projectiles and FSP
  • Blasting cap magazine with rated storage capacity of 500 blasting caps
  • Federal Firearms License (FFL), Type 33
• Lethality and Weapons Testing
  • Live fire (accuracy) testing
    • Remington 5.56 x 45 NATO (.223) Model 700 PSS bolt-action target rifle with 4- 12×40 scope
    • Remington 7.62 x 51 NATO (.308) Model 700 PSS bolt-action target rifle with 4- 12×40 scope
    • Remington 300 Win. Mag. Model 700 PSS bolt-action target rifle with 4- 12×40 scope
    • Armalite .50 caliber, bolt-action target rifle with 4- 12×40 scope
    • M2HB, .50 caliber machine gun
    • M1A1 Springfield, 7.62 x 51 NATO semi-automatic with 3- 9×40 scope
    • Oehler Model 83 Proof Chronograph
    • System stabilization (including time to acquire and time on target)
      • Capability to control ammunition velocity and accuracy with on-site ammunition reloading capability for 5.56 x 45 NATO (.223), 7.62 x 51 NATO (.308), Winchester 300 magnum, and .50 BMG (plus other cartridges as required based on project requirements)
    • Functional evaluation
    • Human factors assessment
    • Ballistic protection
    • Systems engineering assessment
  • Federal Explosives permit for the use and storage of ammunition and high explosives
  • Government approved Standard Operating Procedure for storage and handling of ammunition and explosives
  • Two magazines each rated at storing 1,000 pounds net explosive weight (NEW) of ammunition and explosives
  • Boresight retention
    • 200-meter small bore range, up to .50 caliber
    • 1800-meter large bore range, up to 105 mm, with stationary/stationary, stationary/moving, moving/stationary, and moving/moving target engagement

NATC’s indoor ballistic test range utilizes fixed powder breech weapon stations with interchangeable barrels capable of firing a variety of calibers and projectiles from 5.56 mm to 30 mm, including 20 mm FSP above 5,000 fps. A proof chronograph velocity measurement system is installed for measuring and recording projectiles velocities. An adjustable target holder can accommodate test panels up to 48″ x 48″ and allows for ease of adjustment in the vertical, lateral and angular directions. This entire test range setup is housed in fixed steel structures to provide security and protection from the elements. The weapons are triggers remotely from the safety of a nearby range control room, which also houses the chronograph control and display computer. An adjacent reloading room allows propellant charges to be prepared immediately for each shot to obtain the desired impact velocity.

All tests generally follow the operating procedures specified in AEP-55 Vol.1 and TOP 2-2-710, but detailed test procedures are established for each test based on the specific objectives of the project.

Advanced Survivability & Lethality Technologies – Survivability Testing

NATC is a leader in developmental and production tire testing for use on commercial and military vehicle platforms with a dedicated tire test department. From motorcycles to passenger cars to trucks to earthmovers and agricultural equipment, we use and develop test methods to evaluate and optimize tire performance over a broad range of on- and off-road conditions including mud, sand, snow and ice. We have qualified personnel with years of experience and expertise in tire testing. We test to national and international standards including ASTM F1805, SAE J2014, and qualifying for the Cooperative Approved Tire List per ASTM F1922. We can tailor tests to provide unique customer solutions in a timely and effective manner. Our tire test department is equipped with a multitude of instruments, vehicles, and tools with access to over 3,000 miles of defined test courses representing over 85% of the world’s terrain, and we can test 24 hours per day and 365 days per year.

We offer a full range of tire testing including developmental, mobility, reliability and environmental tests including, but not limited to:

• Tread wear
• Accelerated durability
• Full failure analysis service

Tire Testing

Tire Testing Lab

Testing On/Off-Road All-Terrain Tires

No matter the end user, commercial or military, NATC is committed to helping our customers manufacture reliable and functional vehicles. Our durability evaluations are all-encompassing tests that supplement the development of vehicles and other test articles. From commercial passenger vehicles to tactical wheeled military machines, durability testing is a crucial element in the developmental phases for whole vehicle systems, from component level to complete vehicle. We develop and facilitate durability and accelerated durability tests to expose vehicles to real-world dynamic inputs representative of their expected operating environments and duty cycles.

We work closely with our customers to develop and complete standard and accelerated durability evaluations with the intent to acquire and analyze pertinent test data. The results of the analysis contributes to the understanding of test article durability when exposed to mission profiles or operating environments while meeting our customer’s time constraints. Cyclic road load forces introduced to test articles through their suspensions, and ultimately through the entire test article system during durability evaluations, often initiate internal wear. This causes fatigue failures that require analysis and potential mitigation through test article design modifications.

We achieve dynamic loads by traversing numerous test courses at our proving grounds, ranging from primary high-quality pavement to severe off-road, cross-country terrain. These test courses create a mixed terrain durability route predetermined for the test articles or developed by us with the customer. The route closely represents the anticipated operating environment the vehicle will encounter.

Drawing from decades of durability testing experience, our durability evaluations enable our customers to gather valuable, real-world data and knowledge that ultimately enhance test article development and provide high-quality end products.

Specific applications

RAM-D

Reliability, availability, maintainability, and durability (RAM-D) testing offers more in-depth durability measurements of reliability characteristics, reliability point estimates, and maintenance intervals.

Accelerated Durability

NATC can design and support accelerated durability evaluations with expedited dynamic load exposure, within reasonable mileage accumulations, in the test article’s operating environment. While field tests generally are harder to control than laboratory tests, we believe they offer a greater degree of realism since the vehicle is fully operational during the test, exactly as it will be in service. NATC does field testing only at our facility.

Aftermarket Accessory Testing

NATC is skilled in developing durability routes that simulate rough on- and off-road environments often experienced by people with an active outdoor lifestyle. Whether your customers are heading to the slopes, transporting to water’s edge, or discovering new trails to explore, getting off the beaten path is often essential. To get the snowboard, boat or bike to the destination in one piece, users demand sturdy and secure equipment that can hold up to rugged terrain. We offer a full range of tests for accessory equipment over various routes to ensure that it is up to the task. Our test engineers have access to over 3,000 miles of test courses and can tailor testing from roof and ladder racks to winches and off-road jacks to meet your needs. Our range of comprehensive testing capabilities can target specific characteristics, performance and support industry standards.

Vehicle Durability Testing

Commercial Passenger Vehicles to Military Machines

NATC is at the forefront of full vehicle performance testing for both commercial and military vehicle platforms. We evaluate vehicles ranging from small utility vehicles up to modern military tanks, and we have a deep knowledge of historical vehicle capabilities and of current and future trends in vehicle capabilities. Our typical performance evaluations include braking, acceleration, maximum speed, steady state stability, and dynamic steering and handling on both on- and off-road surfaces. We also often help customers develop specific performance tests and criteria for their particular product. Our performance testing department offers numerous instrumentation assets, vehicles, and shop facilities to support performance testing on any of our wide range of test courses.

We evaluate all aspects of ground vehicle operations and performance on site, and conduct a comprehensive array of standard automotive certification and performance tests in accordance with FMVSS, CMVSS, ISO, SAE, DOT, ASTM, NAV-SEA, FMCSR, EEC/ECE and military standards. In addition, we have the expertise and flexibility to design tests to meet our customers’ specialized testing needs. Our test engineers are hands-on, have years of experience evaluating vehicle systems, and characterize a vehicle’s performance using innovative approaches while referencing historical lessons learned as guidance. Through this range of real-world testing capabilities on our vast facilities, we can provide analytical results to improve a vehicle’s handling, acceleration, and braking characteristics.

Our performance testing facilities include numerous skid pads with varying surface coefficients. Primary test surfaces, prepared in accordance with AASHTO and ASTM specifications, include provisions for either controlled wet or dry use and range from wet smooth concrete (SN 25 +5 wet) to dry asphalt for braking tests (SN 85 +5). We use these facilities for vehicle dynamics testing and for ABS and traction control system evaluations.

We also conduct performance testing on a 200-foot constant-radius paved circle for steady state stability evaluations and a section of 12-foot-wide, 500-foot-radius curve for ABS brake system certification under California Title 21 and the revised FMVSS 121 requirements. Our 11-mile Standard Slag Road, built for gross vehicle weights up to 160 tons, is available for high-speed, dynamometer, braking, cooling and handling tests.

Vehicle Handling & Performance

Military Vehicle Performance Testing

Performance Tests for Vehicles

NATC’s proving ground is situated in the Great Basin offering access to a wide variety of the terrain types found around the world, enabling us to accurately replicate mobility features and challenges found in various real-world environments. Our extensive range of test courses includes fine-grained and coarse-grained soft soil mobility courses, winter climate ice and snow courses, an array of obstacles and grades, amphibious test facilities, and various courses defined and maintained to DoD mission profiles and recreational mobility.

We assess and evaluate commercial and military vehicles over a variety of mobility events and for capabilities that include, but are not limited to, the following.

• Soft soil mobility
  • Fine-grained soft soil mobility
    • Vehicle cone index (VCI)
    • Mud tractive effort (drawbar pull)
  • Coarse-grained soft soil mobility
    • Sand tractive effort (drawbar pull)
    • Sand dune gradeability
• Obstacles and Grades
  • Vertical steps and stairs
  • Log piles and rock crawling
  • Military operations in urban terrain (MOUT)
  • V-ditches – natural and paved
  • Gap crossings
  • Grades – natural and paved from five to 60 percent
  • Side slopes
• Winter test capabilities – packed snow to three plus feet of virgin snow
• Amphibious capabilities
  • Fording
  • Amphibious swim test facilities
    • Amphibious ship simulated launch capabilities
• Mission profile courses
• Sand dune operations

Read more about our facilities and courses.

Vehicle Mobility Test Courses Over a Variety of Mobility Events