LR-500 Quad Mass Gyro (QMG) Inertial Measurement Unit

silhouette of two military jets in red sky

Superior Performance for the right Size, Weight, Power, and Cost (SWaP-C)

Featuring an advanced gyro design for enhanced capabilities, coupled with groundbreaking micro-electromechanical systems (MEMS) technology that stands out among tactical-grade inertial measurement units (IMUs), Northrop Grumman’s LR-500 quad mass gyro (QMG) IMU provides defense, industrial, and commercial customers with an unparalleled low-cost, environmentally sealed, small IMU — created through our advanced fabrication process.

LR-500 innovations include <1 deg/hr class technology that reduces the required size of tactical-grade IMUs to a compact six cubic inches, compared to much larger-sized similar devices.

Learn More > LR-500 Quad Mass Gyro (QMG) Inertial Measurement Unit - Datasheet
inertial reference unit

LR-500 Description

The LR-500 is a lightweight, low-power consumption, MEMS-based and vibration-isolated IMU that stands in a class by itself. It features Northrop Grumman’s proven solid-state silicon MEMS accelerometers and our MEMS QMG in a common IMU package. It delivers the durability and performance required for platform stabilization, guidance, and control in GPS-challenged applications — even operating in severe environmental conditions. Consistent with Northrop Grumman’s standard-setting LN-200 Fiber-optic Gyro (FOG) IMU, the LR- 500 provides inertial, sensor-based incremental velocity and incremental angle output data over a digital serial data bus for a wide variety of applications.

Integral to the LR-500, the QMG combines the best features of tuning forks and ring gyroscopes to maximize positioning, navigation and timing (PNT) capabilities. Northrop Grumman’s QMG silicon accelerometer (SiAc) sensors deliver performance levels similar to FOG- and Ring Laser Gyro-based (RLG) systems, while maintaining traditional benefits of MEMS sensors with regard to SWaP-C and reliability.

Hypersonic missile inflight

LR-500 Applications

The LR-500’s premier capabilities make it the clear IMU of choice for a wide range of tactical to near-navigation grade applications, including:

  • Electro-Optical (EO)/Forward-looking infrared (FLIR)/ camera – radar stabilization
  • Missile guidance
  • Flight control
  • Oil and gas pipeline inspection
  • Mining

Family of Inertial Measurement Units (IMU) and Navigators

fleet of ships on water

Assured Positioning, Navigation and Timing (PNT)

two-axis gyroscope next to penny

G-2000 Gyroscope Inertial Product Family

military helicopter in flight

LN-200 FOG Family Advanced Airborne IMU/AHRS

LN-200S Inertial Measurement Unit

LN-200S and LN-200HPS Inertial Measurement Units

Two E-2D Advanced Hawkeye aircrafr inflight

LN-251 Advanced Airborne INS/GPS (EGI)

Three-dimensional, multi-mode, gallium nitride radar

LN-270 Pointing, Locating, Navigation and Stabilization System INS/GPS (EGI)

satellite hovering over earth

LR-450 Inertial Measurement Unit (IMU)

commercial aircraft in air with insert of inertial reference unit


photo of gyro sensor overlayed on globe and space image

Scalable Space Inertial Reference Unit (SSIRU™) Family of Products

Contact Us

Eric Scott
(224) 200-7539