NASA Tests Engine Technology to Assist With Future Space Vehicle Landings

HUNTSVILLE, Ala. ? Spacecraft attempting to land on an unfamiliar surface need to perform a maneuver called ?deep throttling" -- a step that allows the vehicle to precisely throttle down to perform a smooth, controlled landing. NASA, in partnership with Pratt & Whitney Rocketdyne (PWR) headquartered in Canoga Park, Calif., has demonstrated this type of engine control capability to help design a more reliable and robust descent engine that could be used to land space exploration vehicles  [...]

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