Image shows gravity turn manoeuvre of a DeltaII launcher during the 2004 launch of Messenger.
2011-01-13
Gravity Turn
The Gravity Turn is a manoeuvre used to optimise the efficiency of rockets during launch. Also sometimes called a zero-lift manoeuvre, but should not be confused with swingby or gravitational slingshot. By using gravity to change orientation of the vehicle, the trajectory control system maintains a zero angle of attack. In turn, this minimises lateral aerodynamic loads, allowing optimisation of structural elements. Excessive aerodynamic loads can damage or destroy vehicles. Similar principles apply to landing also.
Image shows gravity turn manoeuvre of a DeltaII launcher during the 2004 launch of Messenger.
Image shows gravity turn manoeuvre of a DeltaII launcher during the 2004 launch of Messenger.
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my suggestions:
ReplyDeletei) the moment of realisation that you shouldn't be laughing, having committed some offensive faux-pas
ii) falling out of bed with a hangover
Oft used in Highland dancing as a means for countering any momentum caused by an over indulged tummy. Kilt to be worn traditionally.
ReplyDeleteA condescending term use by luvvies to describe when an bad actor trips over on stage. "He was murdering King Lear; we were saved by a gravity turn. And then the ambulance arrived."
ReplyDelete