Pasadena, Calif. – A prototype vertical takeoff and landing suborbital launch vehicle under development by Masten Space crashed Sept. 11 during a flight test at Mojave, Calif. Masten business development director Colin Ake says the Xaero was preparing to make a vertical landing and was around two-thirds of the way through its mission when the accident took place. Although investigations continue, Ake says initial indications are that an engine valve became stuck in the open position. ...


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