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ENCLOSURE 1.1: W900KK-22-R-0012
TOPICS: NET – Nuclear Environments Test
OPPORTUNITIES
Closing Date/Time: 04 May, 2026, at 11:59 pm Eastern Time- No white papers or supporting documentation will be accepted after the identified closing date/time of this Opportunity Notice.
TTA-specific Topics: If listed under a TTA, topics are grouped and numbered in the following sections by TTA per numbered domains.
Table Legend In-cycle vs. Out-of-Cycle Opportunity Notice Type TTAs: Test Technology Areas’ initialisms are listed below:
· Autonomy and Artificial Intelligence Test (AAIT)
· Advanced Instrumentation Systems Technology (AIST)
· Command, Control, Communications, Computers, Intelligence, and Software Intensive Systems Test (C4T)
· Cyberspace Test Technology (CTT)
· Directed Energy Test (DET)
· Electronic Warfare Test (EWT)
· High Speed Systems Test (HSST)
· Space Systems Test (SST)
· Spectrum Efficient Technology (SET)
· Nuclear Environments Test (NET) ‘Part.’: Indicates if the TTA is participating in this opportunity release (Yes/No) Topics: Indicates if TTA-specific topics are listed in this opportunity release (Yes/No) ‘Other’: Indicates if the ‘Other Test Technologies’ topic applies to this release (Yes/No).
Tabular Opportunities Listings The tables below show TTA participation for the listed ‘cycle’ type. Specified topics within this document can be accessed easily using the hyperlinks in the tables below:
In-Cycle
| TTA |
| Part. |
| TTA Topics |
| ‘Other’ |
W900KK-22-R-00XX
ENCLOSURE 1.4: W900KK-22-R-0012
IN-CYCLE OPPORTUNITIES
A-8: 1 TRMC T&E/S&T BAA Enclosure 1.4: page 1 Return to Table Domain 2 – Threat Induced Effects Fabrication of a High-G Centrifuge for Inertial Measurement Unit (IMU) Testing The Nuclear Environments Test environment requires an affordable and sustainable high-G centrifuge to conduct successful testing. The centrifuge must be capable of testing future high-G and high-accuracy passively cooled strap-down IMUs. Although high-G and precision centrifuges exist, achieving an extremely high precision/high-G centrifuge with counter-rotation for the element under test has proven difficult to realize. The precision requirement presents challenges necessary to establish inertial environment “truth” that can be compared with the output from the IMU under test. The Government seeks a solution that ensures precision and reliability during IMU testing.
Desired Objectives:
Technologies are needed to:
· Enhance testing accuracy to minimize radius and rate errors, such as employment of an arm radius of 5-8 feet.
· Provide a counter-rotating platform (CRP) to keep gyros and accelerometers from saturating and accumulating error.
· Permit a test item acceleration capability of 300 g or higher.
· Provide a micro-inch and arc-second level precision in measuring position, rate, and attitude.
· Allow multi-axis test article repositions by control system or remounting to achieve maximum observability of all sensors inertial error terms.
· Provide continuous power and signal connections to the IMU during operation.
· Provide a safety built-in test (BIT) to ensure desired probability of detected failure or impending failure.
· Minimize vibration exposure to the IMU during operation.
· Provide a design that incorporates the required facilities and sustainment plan for long-term use and affordability.
As part of this solution, the Government also seeks to identify Risk Areas for Transition, such as sustainment plans and facility requirements.
ADDITIONAL INFORMATION PROVIDED IN REVISION 1 – 15 APRIL, 2026
The following notional System Requirements are provided to assist prospective Offerors in determining the applicability of their Solution to the Government’s desired Objectives:
| Ref. # |
| Centrifuge Requirement |
| Requirement Value/Condition |
| Units |
| 3.2.1 |
| Max G level at CRP & Test Cell Centers |
| 330 |
| g |
| 3.2.2 |
| Primary Rotating Element Radius Including CRP and Test Cell |
| 5<RCent<8 |
| ft |
| 3.2.3 |
| Centrifuge Form Factor |
| Aerodynamically Smooth Disc in an Equally Smooth Enclosure to Minimize Turbulence |
| N/A |
| 3.2.4 |
| Counter Rotating Platform (CRP) |
| Ensure multiple test orientations and magnitude of rotation with respect to inertial space is decoupled from centrifugal rotation rate. |
| N/A |
| 3.2.5 |
| Centrifuge, CRP and Test Cell Programmable Independent Rotation |
| All shall be capable of independent, real time controlled rotation in clockwise and counter-clockwise directions. |
| 3.2.5.1 |
| Test Cell limited to incremental re-orientation |
| The Test Cell shall only provide for incremental positioning around the vertical axis during testing to reduce test item repositioning time and accuracy about during testing . |
| 3.2.6 |
| CRP rotation rate to exceed centrifuge rotation rate to achieve bi-directional dynamic orientation relative to the centrifuge acceleration vector at max g's. |
| Up to and including 1.5X main axis rotation rate |
| 3.2.6.1 |
| Centrifuge, CRP and Test Cell Compensated Rotational Relative Angle RMS Error |
| <0.5 arc-sec RMS, <.1 arc-sec mean |
| 3.2.6.2 |
| Centrifuge and CRP Compensated Rotational Angular Rate Error |
| <1 arc-sec/sec RMS < 1 ppm average rate error |
| 3.2.7 |
| Horizontal integrated radial velocity error in test item centered frame of reference in the rotating centrifuge |
| Acceleration error Integrated over 30 seconds shall not exceed 15 ft at 300 g's and below. This is the equivalent of 120 micro-inches of radius error due to combined cetrifuge "arm" and CRP/Test Cell radial displacement at the test item. |
| 3.2.8 |
| The Primary Centrifuge Structure shall employ an Air Bearing or performance equivalent for rotational support |
| Air Bearing class stiffness, accuracy, low mechanical noise and MTBF are all desirable properties needed for this centrifuge mission. |
| N/A |
| 3.2.9 |
| The Counter Rotating and Test Cell Centrifuge Structure Can Employ Standard Bearings if Consistent with Centrifuge Specifications |
| Standard or Optional Air Bearing for CRP |
| N/A |
| 3.2.10 |
| Counter Rotating Platform (CRP) and Test Cell interior volume radius |
| RCRP >/= 1(Objective) |
| ft |
| 3.2.11 |
| CRP and Test Cell Interior volume Height |
| HCRP=2 (Objective) |
| ft |
| 3.2.12 |
| CRP and Test Cell payload capability including unit under test, all fixtures and data acquisition |
| <=100lb minimum up to 300G. Thereafter, Mass x Ac< 30000lb |
| lbs. |
| 3.3 |
| Centrifuge Performance Requirements |
| 3.3.1 |
| Centrifuge, Counter-Rotating Platform(CRP) and Test Cell Axes of Rotation Alignment with Local Gravity. |
| <5 |
| arc-sec |
NTE in any position & Peak-to-Peak
| 3.3.2 |
| Centrifuge and CRP Rotational Compensated Angular Position Error, within a turn, and turn to turn, meaured or controlled. |
| <1 (objective) |
| arc-sec RMS |
| 3.3.3 |
| Centrifuge, Test Cell and CRP axes parallelism |
| <2 (Objective) |
| arc-sec |
NTE in any position & Peak-to-Peak
| 3.3.4 |
| CRP Module and Test Cell Center of Rotation Axis Alignment with Centrifuge Spin Axis (Controlled Or Measured) |
| <1 (Objective) |
| arc-sec RMS |
| 3.3.4.1 |
| Nutation (Wobble) of Main,CRP and Test Cell Bearings (controlled or measured) |
| <0.1 arc-sec RMS |
| 3.3.5 |
| CRP Module and Test Cell Center of Rotation Radial RMS Position Uncertainty (Controlled or Measured). Includes any imbalance induced errors. |
| <5 (Objective) |
| minch RMS |
| 3.3.6 |
| Elongation on CRP (accuracy off center of CRP) |
Position Uncertainty (Controlled or Measured) Includes any imbalance induced errors.
| <2.5 (Objective) |
| minch RMS |
| 3.3.7 |
| Three axis centrifuge imbalance correction capability while centrifuge is below 50 g |
| 100 |
| inch-lbs. |
| 3.3.8 |
| Three axis centrifuge imbalance correction accuracy while centrifuge is below 50 g |
| <0.1 |
| inch-lbs. |
| 3.3.9 |
| Three axis CRP and Test Cell imbalance correction capability while centrifuge is below 50 g |
| 2 |
| inch-lbs. |
| 3.3.10 |
| Three axis CRP and Test Cell imbalance correction accuracy while centrifuge is below 50 g |
| <0.01 |
| inch-lbs. |
| 3.3.11 |
| Max Vertical, tangential and radial RMS Vibration measured at centrifuge arm and orthogonal horizontal and vertical axes in CRP and Test Cell during operation. |
| <0.01 (Objective) from .1 to 500 Hz |
| g RMS |
| 3.3.12 |
| Dynamic non-rigid test item capability |
| Tolerate/compensate test payloads on CRP with internal isolation or dynamic mechanical response to acceleration |
| 3.3.12.1 |
| Ability to accommodate isolated mass of UUT movement (CG shift) from nominal center @ 300g. Sway direction will be along acceleration vector. |
| <0.25 |
| inches |
(worst case)
| 3.3.12.2 |
| Suspended mass weight |
| <10 |
| pounds (US) |
maximum
| 3.3.12.3 |
| Natural Frequency of the suspended mass on its isolators |
| 75 to 150 |
| Hz |
| 3.3.12.4 |
| Isolation system "Q" factor |
| 8 to 12 |
| dimensionless |
| 3.3.13 |
| UUT Temperature Control |
| 3.3.13.1 |
| Assume UUT power disipation will be 60 Watts max |
| < 25 over ambient deg F |
| watts |
| 3.3.13.2 |
| Passive Temperatue Control |
| 3.3.13.2.1 |
| Without active cooling, temperature at the UUT mounting plate |
| < 25 over ambient |
(Objective) deg F
| 3.3.13.3 |
| Active temparature control |
| For instances where UUT compnent temperature sensitivities require fixed temperatures or predetermined profiles |
| 3.3.13.3.1 |
| Temperature at the UUT mounting plate shall be controlled |
| 75 +/- 5 (Objective) |
| deg F |
| 3.3.13.3.2 |
| Ability to vary CRP UUT mounting plate temperature |
| 32 < TCRPMount <160 (objective) |
| Degrees F (± 1) |
| 3.4 |
| Electrical and Data Interface |
| 3.4.1 |
| CRP & Main Arm Data Transfer sample Rate to Lab [32 X 32 bit (UUT data) per frame plus Centrifuge monitors and controls] |
(Preferred via optical or Inductive Wireless)
| 3.4.1.1 |
| Number of signals including ground and power and spares to accommodate |
| 80 minimum |
| Minimum |
| 3.4.2 |
| Main Arm Power Transfer from Lab |
| Inductive Wireless or equivalent in reliablity and performance |
| N/A |
| 3.4.3 |
| CRP and Power Transfer into CRP from Main Arm for UUT |
| inductive wireless desired |
| 3.4.4 |
| Centrifuge Power |
| <150,000 (Objective) |
| Watts |
| 3.4.5 |
| CRP Module UUT Power Supply Minimum Capability |
| < /=200 |
| Watts |
| 3.4.6 |
| 28VDC (to UUT) |
| 100 watts |
| 3.4.7 |
| ± 15 VDC Conditioned (to UUT) |
| 100 watts |
| 3.4.8 |
| UTC Synch Error in Master Clock system Controlling Centrifuge and CRP Rates (coordinated redundant timing sources and paths) |
| <25 |
| nsec rms |
| 3.5.1 |
| Static Charge Control |
| Charge build-up not allowed on Air Bearing Electrically Isolated Rotating Elements. (Ground can be obtained from readily accessible/replaceable brushes/contacts ) |
| N/A |
| 3.5.2 |
| Safety Verification |
| Independent verification of function and safety prior to and during test |
| 3.5.2.1 |
| Continuous Built in Test Coverage to Detect Identified Failure Mechanisms |
| >95% |
| % |
| 3.5.2.2 |
| Safety BIT needs highest priority at coverage level to ensure desired probability of detected failure or impending failure |
| Probability of >99.999% detection of impending harmful failure to staff and/or critical centrifuge components |
| % |
| 3.5.3.1 |
| Hazardous Material Safety |
| Hazardous Materials (reference DOD I NUMBER 6055.01) |
| N/A |
| 3.5.3.2 |
| Follow Safety Standards |
| Conform with OSHA, State & Local Construction, Environmental and Safety Standards |
| N/A |
| 3.5.3.3 |
| Personnel Protection |
| Safety Interlock required for operation |
| N/A |
| 3.6 |
| Operation and Control |
| 3.6.1 |
| Time to 300g and 300 to 0g (main arm and CRP) |
| 5 (Objective) |
| minutes |
| 3.6.2 |
| CRP Multi-axis repositioning without remount/fixture change |
| 45 degrees to, 90 degrees and 135 deg. to plane of rotation. (Stopped during change) |
| 3.6.3 |
| Ability to remount UUT to 6 or more positions |
| 6 minimum |
| N/A |
| 3.6.4 |
| Data Monitoring |
| Data Status Display to centrifuge operator as well as UUT operators |
| N/A |
| 3.7 |
| Life, Reliability, and Maintenance |
| 3.7.1 |
| Useful Life |
| 25 |
| years |
| 3.7.2 |
| MTBF (assumes periodic maintance plan) |
| >12,000 operating hours with the following Operations profile |
300G | 10% 200G | 10% 100G | 20% 50G | 10% Static | 48% Start Stop cycles 24,000 Hrs.
| 3.7.3 |
| Frequency of use |
| 48 |
| system tests/year |
| 3.7.4 |
| MTTR (include spares and maintance) |
| 5 (assumes parts on hand) |
| Days |
| 3.7.5 |
| Warranty Period |
| 5 |
| Years |
| 3.7.6 |
| Regular maintenance, re-certification and support plan |
| Yes |
| 3.7.7 |
| Spare and Obsolescence Plan Applicable Duration |
| 25 |
| Years |
| 3.8 |
| Quality |
| Follow ISO -9001 Quality Standards |
| N/A |
| 3.9.1 |
| Real-time or near real-time Data Export &/or Analysis to User Analysis Facility. |
| <2 minute delay (Objective) after individual test sequence completion. Data transmission to secure cloud or broadcast over a wide network. |
| 3.9.2 |
| Data Loss Protection |
| Removeable Onboard data storage (data redundant to the transmitted data) |
| 3.9.3 |
| Data Security Reqts |
| Facility must provide signal shielding/access control as required. |
Applicable Standards and Notes
ANSI/TIA/EIA-422-B-94 Electrical Characteristics of Balanced Voltage Digital Interface Circuits
MIL-STD-461E Electromagnetic Emission and Susceptibility Requirements for the Control of Electromagnetic Interference
IEEE STD 836 IEEE Recommended Practice for Precision Centrifuge Testing of Linear Accelerometers
MIL-HDBK-217F Reliability Prediction of Electronic Equipment
Hazardous Materials (reference DOD I NUMBER 6055.01 TBR )
