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23 Cards in this Set
- Front
- Back
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Take-off Rated Thrust (TRT)
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Maximum allowable thrust limited by 104% N1, 700ºC ITT, or 2900 lbs of thrust, whichever occurs first and limited to 5 minutes.
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Maximum Continuous Thrust (MCT)
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Maximum allowable thrust that may be used without a time limitation and is limited by 104% N1, 680ºC ITT, or 2900 lbs of thrust, whichever occurs first.
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Maximum Cruise Thrust (MCRT)
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The highest thrust setting that is recommended for use in cruise.
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Go-around % N1
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The maximum allowable thrust for use during go-around limited by 104% N1, 700ºC ITT, 2900 lbs of thrust, whichever occurs first.
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Critical Engine Failure Speed (Vcef)
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The speed at which one engine can fail and the same distance is required to either continue to accelerate to lift-off speed, or to abort and decelerate to a full stop.
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Critical Field Length (CFL)
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The total length of runway required to accelerate on all engines to critical engine failure speed, experience an engine failure, then continue to lift-off or stop. (must be greater than the runway available)
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Minimum Control Speed Ground (Vmcg)
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88 KIAS. The minimum controllable speed during the take-off run, at which, when an engine is failed, it is possible to maintain directional control using only primary aerodynamic controls without deviating more than 25 feet laterally with all 3 wheels on the runway.
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Assumptions Considered for Vmcg
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It assumes that the remaining engine at TRT, the aircraft loaded at the most unfavorable weight and CG, aircraft trimmed for take-off, and without exceeding 180 lbs of rudder control force with rudder boost operating. (crosswinds and RCR may increase Vmcg)
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Minimum Control Speed Air (Vmca)
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89 KIAS. The minimum controllable speed in the take-off configuration out of ground effect with one engine inoperative and the remaining engine at TRT.
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Vmca is determined at:
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The most critical combination of asymmetric thrust, light weight, and aft CG.
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Assumptions considered for Vmca
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Aircraft trimmed for take-off, 5 degrees angle of bank into the operating engine and no more than 180 lbs of rudder control force with the rudder boost operating.
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Refusal Speed (Vr)
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The maximum speed that can be attained, with normal acceleration, from which a stop may be completed withing the available runway length.
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Maximum Braking Speed (Vbmax)
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The maximum speed from which the aircraft can be brought to a stop without exceeding the maximum brake energy limit of 14.8 million ft-lbs.
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S1
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The go/no go speed.
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S1 Equation
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Vmcg, Vcef ≥ S1 ≥ Vr, Vrot, Vb
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Rotation Speed (Vrot)
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The speed at which the aircraft attitude is increased from the ground run (taxi) attitude to the lift-off attitude.
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Lift-off Speed (Vlof)
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The speed at which the main gear lift off the runway.
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Take-off Flare
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The ground distance covered between lift-off and the 50ft obstacle height.
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Climbout Speed (Vco)
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The scheduled single-engine climbout speed and should be obtained prior to reaching the 50ft obstacle height.
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Reference Zero
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Typically Take-off Ground Run + Take-off Flare Distance; if split markers then Critical Field Length + Take-off Flare Distance
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Vapp
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1.3 x the stalling speed (Vs) for the given flap setting.
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Approach Climb Speed (Vac)
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Vref + 22 KIAS
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Vref
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The 30-flap approach speed.
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