Harrier Jump Jet two systems are fully interlinked but air is not supplied to the reaction control valves during conventional wingborne flight. Harrier Jump Jet The Harrier, informally referred to as the Harrier Jump Jet, is a family of jet-powered attack aircraft capable of vertical/short takeoff and landing operations (V/STOL). Named after a bird of prey, it was originally developed by British manufacturer Hawker Siddeley in the 1960s. The Harrier emerged as the only truly successful V/STOL design of the many attempted during that era, despite being a subsonic aircraft, unlike most of its competitors. It was conceived to operate from improvised bases,
Hawker Siddeley Company. In 2006 the product line was sold to a new company to be known as "Hawker Beechcraft", owned by Onex Partners and Goldman Sachs. The Hawker Siddeley name was not used to brand aircraft until 1963. Prior to this, aircraft were produced under the name of the subsidiary company (e.g. Hawker Hurricane, Hawker Sea Hawk, Gloster Javelin, Gloster Meteor). First flight date is in parentheses. The Canadian subsidiary produced rail cars, transit vehicles and engines (aircraft and ship). Hawker Siddeley Hawker Siddeley was a group of British manufacturing companies engaged in aircraft production. Hawker Siddeley combined the legacies of