Weight And Ballance

Question 0

Define: Moment

Answer 0

The product of the weight of an item multiplied by its arm (expressed in pound inches)

Question 1

Define: Arm

Answer 1

The horizontal distance in inches from the reference datum line to the center of gravity of the item.

Question 2

Define: Datum

Answer 2

An imaginary vertical plane or line from which all measurements of arm are taken.

Question 3

Center of gravity

Answer 3

The point at which an aircraft would balance if it were possible to suspend it from that point(expressed in inches from datum.

Question 4

What basic equation is used in all weight and balance problems to find the center of gravity location of an airplane?

Answer 4

Weight x arm = moment

Weight = moment / arm

Arm (CG) = moment / weight

Question 5

What performance characteristics will be adversely affected when the aircraft has been overloaded?

Answer 5

Higher takeoff speed 
Longer takeoff run 
Reduced rate and angle of climb
Lower maximum altitude 
Shorter range 
Reduced cruising speed 
Higher landing speed 
Longer landing roll
Excessive weight on the nose wheel

Question 6

What effects does forward center of gravity have on the flight characteristics of an aircraft

Answer 6

Higher stall speed
Slower cruise speed
More stable
Greater back elevator pressure required

Question 7

What effect does rearward center of gravity have on the flight characteristics of an aircraft?

Answer 7

Lower stall speed
Higher cruise speed
Less stable

Question 8

Weight of fuel

Answer 8

6 lbs per gallon