Weight and Balance - PowerPoint PPT Presentation

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Title:

Weight and Balance

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... cruise speed and maneuverability Higher stall speed Higher landing speed and longer landing roll Maximum Limits Maximum ramp weight Maximum takeoff weight ... – PowerPoint PPT presentation

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Provided by: Berna213
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Tags: balance | ramp | weight

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Title: Weight and Balance


1
Weight and Balance
2
Weight
  • Aerodynamic Stability
  • Control
  • Overall Performance

3
Excessive Weight
4
Excessive Weight
  • Higher takeoff speed
  • Longer takeoff run
  • Reduced rate and angle of climb
  • Lower maximum altitude

5
Excessive Weight
  • Shorter range and endurance
  • Reduced cruise speed and maneuverability
  • Higher stall speed
  • Higher landing speed and longer landing roll

6
Maximum Limits
  • Maximum ramp weight
  • Maximum takeoff weight
  • Maximum landing weight
  • Maximum zero fuel weight

7
Center of Gravity Limits
  • Center of Gravity
  • Reference Datum
  • Arm
  • Moment

8
Center of Gravity Limits
  • MAC
  • LEMAC
  • TEMAC

9
Forward CG Effects
  • Higher takeoff speed and ground roll
  • Reduced rate and angle of climb
  • Lower maximum altitude
  • Reduced maneuverability

10
Forward CG Effects
  • Higher stalling speed
  • Reduction in performance caused by increased
    tail-down loading
  • Reduced pitch authority

11
Beyond Aft CG Effects
  • Decreased stability and increased susceptibility
    to over control
  • Increased risk of stalls and spins of which
    recovery may be difficult or impossible

12
Lateral CG Effects
  • Fuel imbalance
  • Aileron positioning
  • Decreased cruise speed, range, and endurance

13
WeightBalance Documents
  • Weight and Balance Report
  • Equipment List
  • Empty Weight center of gravity
  • Licensed empty weight
  • After 1979 changed to Basic empty weight
  • Useful load

14
W B Computations
  • Moment indexes
  • Center of Gravity found by dividing the total
    moment by the total weight
  • Computation Method
  • Graph Method
  • Table Method

15
Weight Shift Computations
Weight of Cargo Moved Distance CG
moves Airplane weight Distance
Between Arm locations
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