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  2. Reaction wheel - Wikipedia

    en.wikipedia.org/wiki/Reaction_wheel

    A small reaction wheel viewed in profile A momentum/reaction wheel comprising part of a high-accuracy Conical Earth Sensor to maintain a satellite's precise attitude. A reaction wheel (RW) is an electric motor attached to a flywheel, which, when its rotation speed is changed, causes a counter-rotation proportionately through conservation of angular momentum. [1]

  3. Reaction control system - Wikipedia

    en.wikipedia.org/wiki/Reaction_control_system

    Alternatively, reaction wheels can be used for attitude control. Use of diverted engine thrust to provide stable attitude control of a short-or-vertical takeoff and landing aircraft below conventional winged flight speeds, such as with the Harrier "jump jet", may also be referred to as a reaction control system. [1]

  4. Spacecraft attitude determination and control - Wikipedia

    en.wikipedia.org/wiki/Spacecraft_attitude_control

    Because momentum wheels make up a small fraction of the spacecraft's mass and are computer controlled, they give precise control. Momentum wheels are generally suspended on magnetic bearings to avoid bearing friction and breakdown problems. [5] Spacecraft Reaction wheels often use mechanical ball bearings.

  5. Radius rod - Wikipedia

    en.wikipedia.org/wiki/Radius_rod

    A radius rod (also called a radius arm, torque arm, torque spring, and torsion bar) is a suspension link intended to control wheel motion in the longitudinal (fore-aft) direction. The link is connected (with a rubber or solid bushing) on one end to the wheel carrier or axle, on the other to the chassis or unibody of the vehicle. Radius rods are ...

  6. Rolling resistance - Wikipedia

    en.wikipedia.org/wiki/Rolling_resistance

    Figure 1 Hard wheel rolling on and deforming a soft surface, resulting in the reaction force R from the surface having a component that opposes the motion. (W is some vertical load on the axle, F is some towing force applied to the axle, r is the wheel radius, and both friction with the ground and friction at the axle are assumed to be negligible and so are not shown.

  7. Active suspension - Wikipedia

    en.wikipedia.org/wiki/Active_suspension

    An active suspension is a type of automotive suspension that uses an onboard control system to control the vertical movement of the vehicle's wheels and axles relative to the chassis or vehicle frame, rather than the conventional passive suspension that relies solely on large springs to maintain static support and dampen the vertical wheel movements caused by the road surface.

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Roadcraft - Wikipedia

    en.wikipedia.org/wiki/Roadcraft

    Roadcraft refers to the system of car or motorcycle control outlined in two books Roadcraft: The Police Driver's Handbook [1] and Motorcycle Roadcraft: The Police Rider's Handbook. [2] The books are produced by the Police Foundation and published by His Majesty's Stationery Office (HMSO).