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The Rutan Boomerang is a twin-engined light aircraft featuring an 'outrigger' engine and boom beside a conventional fuselage with the engine at the front. The ARES was a prototype ground attack aircraft with a single engine intake on the left side of the aircraft, while a Gatling gun was mounted on the right side. This avoided the problem of ...
P‑factor, also known as asymmetric blade effect and asymmetric disc effect, is an aerodynamic phenomenon experienced by a moving propeller, [1] wherein the propeller's center of thrust moves off-center when the aircraft is at a high angle of attack.
When an engine on a multi-engine aircraft fails, the thrust distribution on the aircraft becomes asymmetrical, resulting in a yawing moment in the direction of the failed engine. [6] A sideslip develops, causing the total drag of the aircraft to increase considerably, resulting in a drop in the aircraft's rate of climb. [7]
The critical engine of a multi-engine fixed-wing aircraft is the engine that, in the event of failure, would most adversely affect the performance or handling abilities of an aircraft. On propeller aircraft, there is a difference in the remaining yawing moments after failure of the left or the right (outboard) engine when all propellers rotate ...
Profile Right profile. The Rutan Model 202 Boomerang is an aircraft designed and built by Burt Rutan, with the first prototype taking flight in 1996. [1] The design was intended to be a multi-engine aircraft that in the event of failure of a single engine would not become dangerously difficult to control due to asymmetric thrust.
The asymmetric lift causes asymmetric drag, which causes the aircraft to yaw adversely. To correct the yaw, the pilot uses the rudder to perform a coordinated turn. In a multi-engined aircraft, the loss of thrust in one engine can also cause adverse yaw, and here again the rudder is used to regain coordinated flight.
Ground loops may occur when landing on muddy ground, wet pavement, or frozen surfaces, especially if there are puddles or patches. They may also occur when an aircraft departs a paved surface: for example, after an engine failure in multi-engine airplanes produces asymmetric thrust.
Class ratings may have limitations placed upon them. In the United States, if a pilot being examined for a multi-engine rating does not demonstrate the ability to control an aircraft under asymmetric thrust, their multi-engine rating will be endorsed as "Limited-to-Center Thrust". [2]