PoF Chapter 12 Flight Mechanics

Which of the following statements is correct regarding during normal cruise?

• the CP is behind CG, and the tailplane supplies a downforce

• the CG is behind CP, and the tailplane supplies a downforce

• the CP is behind CG, and the tailplane supplies an upforce

• the AC is behind the CP, and the tailplane supplies a downforce

During a climb:

• lift generated by the wings must be greater than weight

• lift is less than weight as engine thrust supports the remaining proportion of weight

• drag is greater than thrust

• thrust generated by the engine must equal drag

For a climb:

• an aircraft must generate a lot of lift to climb

• climb angle will be smaller with the flaps retracted

• climb angle will be bigger with the landing gears retracted

• climb angle will be bigger with increasing weight

An Airbus A380 with four-engine aircraft has a maximum take-off mass of 575,000kgs, with each of its engine producing 350,000 N of thrust. The lift/drag ratio of the wing is 20:1. With a g of 10m/s², calculate the one-engine-inoperative climb gradient.

• 19%

• 13%

• 26%

• 9%

If the nose of the aircraft is lowered with a constant thrust setting:

• lift generated by the wings is greater than weight

• the aircraft will decelerate

• the aircraft will continue to accelerate

• the aircraft will accelerate, and the acceleration will eventually stop due to increase in drag

In an emergency descent, the highest way to get to a lower altitude is to:

• extend full flaps

• increase engine thrust to maximum

• extend the speedbrakes

• retract the landing gears

Which of the following statements is correct?

• Aircraft gliding at the highest L/D ratio will glide over the shortest ground distance

• The glide angle will be the smallest at the highest L/D ratio

• A lighter aircraft will glide further than the heavier aircraft

• The aircraft will glide further with flaps extended due to additional lift

Two aircraft are turning at the same bank angle and same TAS

• the heavier aircraft will achieve a bigger turn radius

• the lighter aircraft will achieve a bigger turn radius

• the heavier aircraft will achieve a bigger rate of turn

• both aircraft will achieve the same turn radius

An aircraft turning at a constant bank angle. Increasing TAS will:

• increase the rate of turn

• increase the turn radius

• keep the turn radius constant

• keep the rate of turn constant

To maintain a constant rate of turn:

• decreasing speed requires a decreased bank angle

• decreasing speed requires an increased bank angle

• increasing speed requires an increased weight

• increased weight requires an increased bank angle