takeoff power

takeoff power

The amount of power that an engine is allowed to produce for a limited period of time for takeoff. The use of takeoff power is usually limited to 5 min for reciprocating engines and up to 2½ min for gas turbine engines. This may not always be the case. Specifically, with respect to reciprocating engines, it is the brake horsepower developed under standard, sea-level conditions and under the maximum conditions of the crankshaft rotational speed and the engine manifold pressure approved for the normal take-off. It is limited in continuous use to the period of time shown in the approved engine specifications. With respect to gas turbine engines, it is the thrust developed under static conditions at a specified altitude and atmospheric conditions of the rotor shaft rotational speed and gas temperature approved for the normal takeoff. It is limited in continuous use to the period of time shown in the approved engine specifications.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
The pilot maneuvered the airplane into the wind and applied takeoff power for what he later described as a "bumpy" takeoff.
Oldham says touch and goes aren't recommended because the batteries do better at absorbing the regeneration charge if they aren't immediately asked to deliver takeoff power. The group bought 15-kw chargers for the airplanes, one stationed at each of three airports.
"The plane was accelerating with full takeoff power along the ground passage, exceeding the taxiway onto an unpaved zone, stopping near the exit of G4 ground passage," the Bureau said.
When the engines did not respond, he moved the thrust levers to the takeoff power position, and assumed control of the aircraft.
Start with maximum takeoff power. For many pistons, that's just a full push on the throttle(s), but if you've got more (turbocharged engines), use it only if can't arrest your descent.
The weight of the motor-propeller system [W.sub.EMP] is determined by the maximum takeoff power [P.sup.max.sub.req] = P([k.sub.T][W.sub.TO]/2, [V.sub.max]).
They said they were, so I called for takeoff power and began our roll.
"When they applied takeoff power, they got warnings the system was not properly set and the information they needed was not there." "That could have been a horribly fatal accident," he added.
FAA certification of new commercial transport engines requires demonstration testing of bird ingestion tolerance at takeoff power under FAR [section] 33.76.
The HondaJet is powered by two Honda HF-118 engines, each rated at 1,670-pound thrust at takeoff power.
In extreme cases, sudden application of takeoff power can result in at least momentary inability to maintain directional control as the necessary crosswind compensation and the airplane's sudden increase in torque and P-factor require all available rudder travel.