LN-200S Inertial Measurement Unit
Fiber-optic inertial measurement unit for space applications with flight heritage on Mars rovers and deep-space probes.
Technical specifications
- Gyro Bias Repeatability
- 1°/hr, 1σ
- Angle Random Walk
- <0.07°/√hr
- Accelerometer Bias Repeatability
- 300 µg, 1σ
- Dynamic Range (max)
- 1,000°/sec
- Power
- 12 W nominal, regulated ±5 Vdc and ±15 Vdc
- Dimensions
- 3.5 in. diameter x 3.35 in. height (8.89 x 8.51 cm)
- Weight
- 1.65 lb (748 g)
- Temperature Range
- -54°C to +71°C operating
- Electrical Interface
- RS-422/485 serial data
- Enclosure
- Hermetically sealed
About
The LN-200S is a small, lightweight, highly reliable fiber-optic inertial measurement unit (IMU) built by Northrop Grumman for space applications. It comprises three solid-state fiber-optic gyros and three solid-state silicon MEMS accelerometers in a compact, hermetically sealed package that outputs incremental velocity and angle data over a digital serial bus.
Part of the LN-200 family in high-rate production since 1994 (over 40,000 units produced), the LN-200S has flown on NASA’s Mars rovers (Spirit, Opportunity, Curiosity, Perseverance), Deep Space 1, Hayabusa2, Kepler and WISE space telescopes, and numerous GEO/LEO satellites. It supports missions lasting up to 15 years and provides highly reliable attitude reference and acceleration data for spacecraft attitude control systems.
Documentation
- LN-200S-LN-200HPS-inertial-measurement-unit-imu-datasheet_Original file.pdf PDF source: media.northropgrumman.com ↗
Need the full ICD, test reports or a specific revision? Ask the supplier directly.
