In the latter case, theĭeflector may be perforated with numerous holes connected with a source Heavily constructed piece of metal mounted as a side and bottom of a flame bucket. Pad surrounded by the framework of the launcher, or it may be a Small device fixed to the top surface of the launch The hot gases of the rocket engine so as to deflect them away from the In a vertical launch, a flame deflector is any of variously designed obstructions that intercept It is open at the top and also on one or three sides below, with a thick metal fourth side bent toward the open sides so as to deflect the exhausting gases. Most launches are of this type.Ī deluge collection pond is a pond at a launch site that collects water used to cool the blast deflectorĪ flame bucket is a deep cavity built into a launch pad to receive hot gases during rocket thrust buildup. It is distinctīurning because of the exhaustion of fuel.Ī dawn rocket is a rocket launched into orbit in an easterly direction so that Earth's rotation augments the rocket's velocity. Intentional command also known as shutdown. The liftoff point, however the Space Shuttle, for example, typically liftsĬutoff is the termination of burning in a jet or rocket engine brought about by an Sequence begins and T plus time thereafter). Schedule, measured in terms of T-time (T minus time before the engine start The destruction involves sending out a radio signal thatĪ countdown is the step-by-step process leading to a launch. Safety officer whenever vehicle performance degrades enough to be a In liquid fuel rockets (see liquid-propellantĮngines) the fuel supply is simply turned off.Ĭommand destruct is a system that destroys a launch vehicle, activated on command of the range In the combustion chamber or by opening vents to drop the temperature below Rocket motor), controlled burnout is achieved by lowering the pressure Shuttle, for example, were separated by blowoff.īoiloff is the vapor loss from a volatile liquid – for example, liquid oxygen – particularly when stored in a vehicle ready for flight.īurnout is the point on the trajectory of a rocket at which the fuel supply is exhausted or cut off. Blowdown may be done before or after firing the engine.īlowoff is the separation of a portion of a rocket or spacecraft by explosive force. Usually it involves the starting of strap-onīoosters after a central motor has lifted the vehicle, or visa versa.Ī blockhouse is a heavily reinforced building, designed to withstand blastĪnd heat, which, in the early years of space exploration, contained theĮlectronic controls and equipment for preparing and launching a rocket (Fig 1).īlowdown is the draining of a rocket engine's liquid Upper stage ignition of a multistage rocket isĪ special case of air starting. An air start is the ignition of any rocket motor or engine after first
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