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NASA personnel handle a single Control Moment Gyroscope for the International Space Station. The ISS employs a total of four CMGs, mounted on Z1 truss [16] as primary actuating devices during normal flight mode operation. The objective of the CMG flight control system is to hold the space station at a fixed attitude relative to the surface of ...
Gyroscopic control may refer to: Control moment gyroscope , an attitude control device generally used in spacecraft attitude control systems Gyroscopic control (gaming) , accelerometers to as a control input
A spacecraft's attitude must typically be stabilized and controlled for a variety of reasons. It is often needed so that the spacecraft high-gain antenna may be accurately pointed to Earth for communications, so that onboard experiments may accomplish precise pointing for accurate collection and subsequent interpretation of data, so that the heating and cooling effects of sunlight and shadow ...
A gyroscope flywheel will roll or resist about the output axis depending upon whether the output gimbals are of a free or fixed configuration. An example of some free-output-gimbal devices is the attitude control gyroscopes used to sense or measure the pitch, roll and yaw attitude angles in a spacecraft or aircraft. Animation of a gyro wheel in ...
In January 2019, WorldView-4 was announced to have suffered a failure in one of its control moment gyroscopes, and was considered no longer usable. [9] WorldView-4 was insured against satellite failure, and in spring 2019 the company owning the satellite, Maxar Technologies , which had acquired DigitalGlobe in 2017, announced that they had ...
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Gyroscopes failed on several occasions on the Hubble Space Telescope and had to be replaced several times. However, these were a different design called a gas-bearing gyroscope, which have certain benefits but experienced some long-term reliability issues. [39] JWST will have six gyroscopes, but only two are required for pointing. [38]
A Gyroscopic stabilizer is a control system that reduces tilting movement of a ship or aircraft. It senses orientation using a small gyroscope, and counteracts rotation by adjusting control surfaces or by applying force to a large gyroscope. It can be: Some active ship stabilizers adjust "active fins" of the ship or apply force to a large ...