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Landing Gear

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Landing Gear Most light aircraft have some form of direct linkage between the nose-wheel and the rudder pedals that allow the nose-wheel to be steered when the aircraft ... – PowerPoint PPT presentation

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Title: Landing Gear


1
Landing Gear
2
Landing Gear
  • What are three advantages of a tricycle landing
    gear over a tail-wheel type landing gear?

3
Landing Gear
  • It allows more forceful application of the brakes
    without the danger of nosing the aircraft over
  • It permits better visibility for the pilot during
    ground operations

4
Landing Gear
  • It prevents the tendency for the aircraft to
    ground loop.

5
Landing Gear
  • What is the name of the landing gear that has
    more than two wheels mounted on a single strut?
  • A bogie landing gear

6
Landing Gear
  • What is the function of the drag strut in a
    retractable landing gear?

7
Landing Gear
  • The drag strut braces the landing gear against
    fore-and-aft movement of the wheel, and it hinges
    in its middle to allow the landing gear to be
    retracted into the aircraft structure.

8
Landing Gear
  • What are the two most commonly used methods of
    actuating a retractable landing gear?
  • Electric Motor
  • Hydraulic Cylinder

9
Landing Gear
  • Gear Position Indicators
  • Red light
  • One or three green lights
  • Press to test

10
Landing Gear
  • What are four methods of emergency extension of a
    retractable landing gear?

11
Landing Gear
  • Hand crank
  • Designed so it will free fall and lock down
    mechanically
  • Hydraulic pressure can be built up by a hand pump

12
Landing Gear
  • Actuated with compressed air from a storage
    cylinder

13
Landing Gear
  • Maximum landing gear extended speed VLE
  • Maximum landing gear operating speed VLO

14
Landing Gear
  • What is the commonly used name for the landing
    gear safety switch that is located on the torque
    links?
  • A squat switch

15
Landing Gear
  • Explain when you would retract the gear after
    takeoff?

16
Landing Gear
  • Explain when you would retract the gear after
    takeoff?
  • Two positive rates of climb and once there is no
    more runway available for landing in front of the
    airplane

17
Landing Gear
  • What is the function of the warning horn in a
    retractable landing gear system?

18
Landing Gear
  • The horn sounds to warn the pilot that the
    throttles are closed to the position for landing
    of the aircraft if the landing gear is not down
    and locked. It is different from the stall
    warning horn.

19
Landing Gear
  • How is nosewheel steering accomplished on a light
    aircraft?

20
Landing Gear
  • Most light aircraft have some form of direct
    linkage between the nose-wheel and the rudder
    pedals that allow the nose-wheel to be steered
    when the aircraft is on the ground.

21
Landing Gear
  • How is nose-wheel steering accomplished on a
    heavy aircraft?

22
Landing Gear
  • The nose-wheels of most heavy aircraft are
    steered with hydraulic actuators that are
    controlled by moving a small wheel that is turned
    by the pilot.

23
Landing Gear
  • What is the function of the shimmy damper that is
    used on a tricycle landing gear?

24
Landing Gear
  • The shimmy damper restrains the movement of the
    nose-wheel. It allows the wheel to be steered by
    moving it slowly, but does not allow the wheel to
    move back and forth rapidly.

25
Landing Gear
  • Why do modern high-performance aircraft use
    several small wheels rather than fewer large
    wheels on their landing gear?

26
Landing Gear
  • Small wheels spread the weight of the aircraft
    over a larger area
  • Several smaller wheels give a margin of safety in
    case one tire should fail

27
Landing Gear
  • Small wheels and tires are easier to house in the
    aircraft structure than large ones

28
Landing Gear
  • What is indicated by a tire wearing on the
    shoulder of the tread more that in the center of
    the tread?

29
Landing Gear
  • What is indicated by a tire wearing on the
    shoulder of the tread more that in the center of
    the tread?
  • The tire has been operated under-inflated

30
Landing Gear
  • How soon after landing should aircraft tires be
    checked for proper inflation?

31
Landing Gear
  • No sooner that two hours after the aircraft has
    landed. The correct inflation pressure in a tire
    is the pressure when the tire is cold.

32
Landing Gear
  • Why is it important that the tread of a tire not
    be allowed to wear to the point that water cannot
    pass under the tire?

33
Landing Gear
  • If water cannot pass under the tire, the airplane
    is likely to hydroplane or skid on wet runways?

34
Landing Gear
  • What is one of the main dangers of operating a
    tubeless tire in an underinflated condition?

35
Landing Gear
  • When the tire is operated in an underinflated
    condition, the cords flex and generate enough
    heat to damage the tire.

36
Runway Weight Bearing Capacity
  • Salina
  • RWY 17-35 S-75 D-200 DT-360 DDT-600
  • RWY 12-30 S-55 D-68 DT-125
  • RWY 04-22 S-75 D-80 DT-200

37
Runway Weight Bearing Capacity
  • S - Single Wheel type landing gear DC-3
  • D - Dual wheel type landing gear DC-6
  • T - Twin wheel landing gear DC-6

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41
Runway Weight Bearing Capacity
  • ST - Single-tandem type landing gear C-130
  • SBTT - Single-Belly Twin Tandem landing gear
    KC-10
  • DT - Dual-tandem type landing gear B707

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48
Runway Weight Bearing Capacity
  • TT - Twin-tandem type (includes quadricycle
    landing gear B-52 C-135
  • TRT - Triple-tandem landing gear C-17

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53
Runway Weight Bearing Capacity
  • DDT - Double dual-tandem landing gear B747
  • TDT Twin delta-tandem landing gear C-5

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