TOLD DEFF

Question 1

TAKE-OFF RATED TRUST

Answer 1

the max allowable thrust (determined by fan speed n1). it varies with pressure alt, ram air temp, and engine bleed air usage. operation of TRT is limited to 5 min

Question 2

max continuous thrust

Answer 2

the max allowable thrust (determined by fan speed, n1) that may be used without time limitation. max continuous thrust varies with pressure alt, ram air temp, and engine bleed air usage

Question 3

runway length

Answer 3

the paved surface length excluding any overrun

Question 4

critical engine failure speed

Answer 4

defined as the speed at which one engine can fail and the same distance is required to either continue to accelerate to lift off speed, or abort and decelerate to a full stop

Question 5

critical field length

Answer 5

the total length of the runway required to accelerate on all engines to critical engine failure speed, experience an engine failure, then continue to lift off or stop

Question 6

take off factor

Answer 6

numbers are % n1 settings adjusted for oat and altitude and are presented on a different scale

Question 7

take off ground run

Answer 7

defined as that runway distance normally obtained in service operations at zero wind at the mission specified weight, pressure alt, thrust setting, ambient temp, and appropriate take off configuration using lift off speed

Question 8

minimum control speed ground (Vmcg)

Answer 8

Vcmg: 88kias, is 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 three wheels on the runway. the speed is established with the remaining engine at the takeoff thrust setting, the aircraft loaded at the most unfavorable weight and center of gravity, and the aircraft is trimmed for takeoff, with exceeding 180 lbs of rudder control force by the pilot with the rudder boost system operating. conditions of crosswind and rcd may increase Vmcg.

Question 9

minimum control speed air (Vmca)

Answer 9

air min control speed. Vmca (89 KIAS) is the min controllable speed in the takeoff configuration out of ground effect with one engine inoperative and the remaining engine at takeoff rated thrust. vmca is determined at the most critical combination of asymmetric thrust, lightweight, and aft cg. the speed is established wit hotel aircraft trimmed for takeoff, 5 degrees angel of bank into the operating engine and no more then 180 lbs of rudder control forced by the pilot with rudder boost system operating. Vmca is always less then takeoff speed and is not considered in takeoff planning.

Question 10

refusal speed (Vr)

Answer 10

Vr- is the max speed that can be attained, with normal acceleration, from which a stop may be completed within the available runway length

Question 11

max braking speed (vb)

Answer 11

Vb- the max speed from which the aircraft can be brought to a stop with exceeding the ma brake energy limit.
(14.8 million ft lbs)

Question 12

takeoff acceleration check

Answer 12

provides a speed for a given distance during takeoff ground roll. this speed can be checked against aircraft indicated airspeed at that distance point to ensure that the takeoff is proceeding normally. takeoff acceleration check speed should be adjusted to be at least 10kias less than s1. compute takeoff acceleration check whenever s1 is less that Vrot. effects of wind, runway gradient, and rsc are included in the takeoff ground run. use 100% of runway wind component for takeoff ground run determination.

Question 13

go/ no go speed (S1)

Answer 13

S1- the takeoff is committed a the indicated airspeed at or above s1. if an engine failure occurs prior to obtaining s1 and action is taken to stop the aircraft before obtaining s1, takeoff abort capability is assured. in takeoff planning s1 is equal to or greater than the higher of ground min control speed (Vmcg) or critical engine failure speed. however S1 must not be higher than the lowest -refusal speed, rotation speed, or max braking speed. if it is higher, the takeoff weight must be reduced until the requirement is met.

Question 14

rotation speed (Vrot)

Answer 14

Vrot- the speed at which the aircraft attitude is increased from the ground run (taxi) attitude to the lift off attitude. this speed is greater that the ground min control speed.

Question 15

lift off

Answer 15

the moment at which the main gear lifts off the runway

Question 16

lift off speed (Vlof)

Answer 16

lift off speed is the speed at which lift off occurs

Question 17

takeoff flare

Answer 17

the ground distance covered between liftoff and a 50ft obstacle height above the runway

Question 18

takeoff speed

Answer 18

the speed which permits attaining the obstacle climb out speed at or before reaching the 50 ft obstacle height above the runway.

Question 19

climb out speed (Vco)

Answer 19

climb out speed is the scheduled single engine climb out speed and should be obtained at or prior to reaching the 50 ft obstacle height. due to excess thrust available with 2 engine operation, the 2 engine climb out speed is 10kts greater or Vco +10 its

Question 20

climb out factor

Answer 20

climb out factor is the variable used to determine takeoff/climbout performance and obstacle clearance. min climb out factor for all takeoffs is 2.5