Guidance, Navigation, and Control

Guidance, Navigation, and control components include everything you need to point your spacecraft in the direction you want, whether that is at the sun to charge, at the ground to communicate, or out into space for science.  In general, gnc components can be broken up into two categories, sensors and actuators, and Terran produces both.

Earth Moon Camera (LunIR)

Features

The Earth-Moon Cam, set to demo on the LunIR mission, is a navigation tool for Cis-lunar space, allowing the spacecraft to search for the illuminated disks of the Earth and moon, triangulating its position between the two.

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RW-9000 Reaction Wheel

Features

Reaction Wheels are used in the spacecraft to provide high accuracy attitude (pointing) control. By increasing or decreasing speed, the reaction wheel forces the spacecraft to rotate in the opposite direction, allowing the spacecraft to point at specific targets to take images or transmit data to the ground.

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RW-0055 Reaction Wheel

Features

Reaction Wheels are used in the spacecraft to provide high accuracy attitude (pointing) control. By increasing or decreasing speed, the reaction wheel forces the spacecraft to rotate in the opposite direction, allowing the spacecraft to point at specific targets to take images or transmit data to the ground.

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STIM320 IMU Module, Nano

Features

The nano version of the STIM320 featured a reduced housing size for better mass efficiency, as well as a more flexible connector.

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STIM277H IMU Module, Nano

Features

The nano version of the STIM277H featured a reduced housing size for better mass efficiency, as well as a more flexible connector.

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STIM210 IMU Module, Nano

Features

The nano version of the STIM210 featured a reduced housing size for better mass efficiency, as well as a more flexible connector.

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STIM210 IMU Module, Micro

Features

Gyroscopes measure the spacecraft’s spin rate about an axis, allowing the spacecraft to precisely measure its rate of rotation, a critical component of the attitude determination and control system. The STIM210 module combines an off the shelf 3-axis MEMS IMU package with a Terran control board.

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Micro Torque Rod

Features

The Micro torque rod builds on the TR-400 to provide a significantly larger magnetic moment, suitable for much larger vehicles, as well as complete redundancy in a single package

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Nano Torque Rod

Features

The Nano torque rod provides a small formfactor ADCS actuator, used for reaction wheel momentum management and contingency ADCS pointing.

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Coarse Sensor Module, Nano

Features

The Coarse Sensor Module integrates three important backup sensors for the ADCS system, sun sensors, magnetometers, and temperature sensors to help inform the ADCS filter. The CSM2 line also provides a built in microcontroller to alleviate processor load from the host system, and full redundancy in a single package.

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GPS Module, Micro

Features

The GPS Module works just like the GPS in your car — but in space. The module provides absolute position and time information to the satellite’s guidance and navigation systems allowing the spacecraft to adjust its course with confidence.

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Star Tracker (MkII), Micro

Features

The Star Tracker is the eyes of the system, and the primary external attitude reference for most systems. The Terran Star trackers use a combination of algorithms in order to detect star fields, select the proper exposure for imaging, and provide the spacecraft with an absolute pointing reference. Multiple star trackers in different orientations can be combined to provide even better pointing performance.

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STIM320 IMU Module, Micro

Features

Gyroscopes measure the spacecraft’s spin rate about an axis, allowing the spacecraft to precisely measure its rate of rotation, a critical component of the attitude determination and control system. The STIM320 module combines an off the shelf 3-axis MEMS IMU + accelerometer package with a Terran control board.

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Gyro Assembly

Features

Gyroscopes measure the spacecraft’s spin rate about an axis, allowing the spacecraft to precisely measure its rate of rotation, a critical component of the attitude determination and control system. The CVG Gyro assembly is intended for missions with the tightest pointing requirements, and combines several 2-axis gyroscopes into a single module, providing very accurate measurements.

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RW-1000 Reaction Wheel

Features

Reaction Wheels are used in the spacecraft to provide high accuracy attitude (pointing) control. By increasing or decreasing speed, the reaction wheel forces the spacecraft to rotate in the opposite direction, allowing the spacecraft to point at specific targets to take images or transmit data to the ground.

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STIM277H IMU Module, Micro

Features

Gyroscopes measure the spacecraft’s spin rate about an axis, allowing the spacecraft to precisely measure its rate of rotation, a critical component of the attitude determination and control system. The STIM277H module combines an off the shelf 3-axis MEMS IMU package with a Terran control board and is also hermetically sealed.

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Coarse Sensor Module, Mirco

Features

The Coarse Sensor Module integrates three important backup sensors for the ADCS system, sun sensors, magnetometers, and temperature sensors to help inform the ADCS filter. The CSM2 line also provides a built in microcontroller to alleviate processor load from the host system, and full redundancy in a single package.

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GPS Module, Nano

Features

The GPS Module works just like the GPS in your car — but in space. The module provides absolute position and time information to the satellite’s guidance and navigation systems allowing the spacecraft to adjust its course with confidence.

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Star Tracker (FLST)

Features

Currently, in development, the FLST (FPGA Luminary-detect Star Detector), iterates on the MkII Star Tracker and provides improved sensitivity and a more robust star-tracking algorithm.

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Star Tracker (MkII), Nano

Features

The Star Tracker is the eyes of the system and the primary external attitude reference for most systems. The Terran Star Trackers use a combination of algorithms in order to detect star fields, select the proper exposure for imaging, and provide the spacecraft with an absolute pointing reference. Multiple star Trackers in different orientations can be combined to provide even better pointing performance.

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