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Despinning can be achieved by various techniques, including yo-yo de-spin. [11] With advancements in attitude control propulsion systems, guidance systems, and the needs for satellites to point instruments and communications systems precisely, 3-axis attitude control has become much more common than spin-stabilization for systems operating in ...
Yo-yo de-spin systems are commonly used on sub-orbital sounding rocket flights, as the vehicles are spin stabilized through ascent and have minimal flight time for roll cancellation using the payload's attitude control system. [4] As an example of yo-yo de-spin, on the Dawn spacecraft, roughly 3 kilograms (6.6 lb) of weights, and 12-metre (39 ...
Powerline worker performs maintenance of a lightning arrester on an electrical transmission tower in New Brunswick, Canada. A lightning arrester (alternative spelling lightning arrestor) (also called lightning isolator) is a device, essentially an air gap between an electric wire and ground, used on electric power transmission and telecommunication systems to protect the insulation and ...
Have you ever jumped the gun at a stoplight -- rolling into the intersection before the red light turns green? You might get away with it. Then again, you also risk getting a ticket. Something ...
Safety net Safety line. Fall arrest is the form of fall protection which involves the safe stopping of a person already falling. It is one of several forms of fall protection, forms which also include fall guarding (general protection that prevents persons from entering a fall hazard area e.g., guard rails) and fall restraint (personal protection which prevents persons who are in a fall hazard ...
About 40% of American adults are living with obesity — and for many, it can feel a bit like a roller-coaster as their weight fluctuates. Experts explain the science behind "yo-yo dieting."
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