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Session C7: Inertial Measurement Unit (IMU)

mHRG IMU for Improved Navigation in GPS Denied Environments
Phil Bruner, Albert Choi, Philip Clark, Michael Chavez, Farzin Dinyarian, Lawrence Linick, Daniel Rampacek, William Schellhorn, Alex Trusov, Cole Umemura, Northrop Grumman; Scott David, Michael Payne, Stephen Pethel, NTA; Patrick Renfroe, US Army CCDC AvMC
Location: Ballroom D
Alternate Number 1

Northrop Grumman has partnered with NTA Inc. and the DEVCOM AvMC to develop the milli-Hemispherical Gyro (mHRG) IMU. The prototype mHRG IMU features digital serial I/O, is 4 skewed axes gyro capable, and has modular electronics with fixed point VHDL firmware and gyro self-calibration system software. The mHRG IMU is based on proven gyro technology using the same resonator and electrodes of the HRG that is currently in production, but only requires 10 parts to assemble. To date, dozens of Gen 2C gyros have been built and a prototype mHRG IMU was delivered to and tested by DEVCOM AvMC. The goal of the mHRG IMU is strapdown near-strategic grade performance in a sub-navigation grade C-SWaP. The mHRG also promises no wear out mechanisms like the bearings, plasma, and lasers of legacy gyros demonstrated by the fact that the HRG has amassed 50 million operational hours without a single mission compromise. In this presentation the status of mHRG IMU development will be presented along with the most recent laboratory test results demonstrating the current performance achieved by this technology.
Distribution A. Approved for Public Release.
Public Release # PR20210049



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