They can also take off and land like a normal airplane. This allows the vehicle to take off and land vertically and to hover. To move forward, the helicopter tilts slightly to direct some of its thrust forward. A tiltrotor is an aircraft that uses a pair tiltrotors mounted on rotating engines at the end of a fixed wing to generate vertical and horizontal thrust.
It combines the vertical capability of a helicopter with the speed and range of a fixed-wing aircraft. For vertical flight, the rotors are angled so the plane of rotation is horizontal, like a helicopter. As the aircraft gains speed, the rotors are tilted forward, with the plane of rotation eventually becoming vertical. The wing then provides lift, and the rotor provides thrust like a propeller. Most planes only achieve lift by moving forward through the air.
The air flowing over the wings generates the lift, and if the plane starts moving too slowly, it will stall and, potentially, fall out of the sky. The Harrier got around this by creating four columns of air that supported the plane when it needed to takeoff and land.
These columns overcame the weight of the Harrier and allowed it to fly. Hatches just behind the cockpit allow aircraft mechanics to perform checks and repairs. The Harrier has four swiveling nozzles, two on each side of the fuselage body , under the wings.
The wings are short and slope backward. Toggle text. The maximum weight of the aircraft and its payload is approximately 18, lbs. During short takeoffs and landings, the thrust of the engine is aided by the lift of the wings like traditional aircraft, which increases the payload capacity of the aircraft 31, lbs.
The four nozzles are positioned the same way as in vertical takeoff. During regular flight, the nozzles are turned horizontally directing the thrust like a conventional aircraft. The speed of VSTOL operations depends on how much weight is supported by the vectored engine thrust i.
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