BFEBLK3 Flashcards
____ and ____ affects the efficiency and _____ of the aircraft
Weight and balance / safety
The balance point of an aircraft can be determined by locating its ______
Center of Gravity (CG)
_____ is an imaginary point where the aircraft would balance if freely suspended in the air
Center of Gravity (CG)
The _____ specify the forward or aft CG locations within which an aircraft can safely operate
CG limits
CG and CG limits are usually specified in ____ from the _____ of the aircraft
inches / RDL
_____ is the horizontal distance inches from the RDL to the CG for any object on the aircraft
Arm
____ is the weight of an item in pounds multiplied by the arm in inches
Moment
_____ is the torque the aircraft weight would produce relative to the RDL; measured in inch/pounds
Moment
_____ is a unit that has magnitude and direction.
Weight
___ is the sum of all moments making up the basic weight of the aircraft
Basic Moment
All aircraft are balanced within the limits established by the _______
Manufacturer
The CG limits specify the ____ and _____ center of gravity locations within which an aircraft can safely operate
forward and aft
____ is the weight of the aircraft before adding crew, fuel, and other variables of load
Basic Weight
____ is a vertical plane, parallel to the RDL and identified by a number equal to its distance from the RDL
Fuselage Station
____ is the average arm or CG of a compartment, fuel tank, piece of equipment, cargo, etc
Centroid
____ is the distance in inches from the RDL to the CG of the aircraft
Aircraft Center of Gravity Arm (CGA)
What are some of the effects of improper loading
- Requires longer runway for lift
- May not climb fast enough to clear obstacles
- Reduces fuel efficiency
- Stalls may occur
What are some of the effects of improper forward loading
- Nose heavy
- Greater deflection of the elevator
- Increased drag and decreased speed
What are some of the effects of improper aft loading
- less stable
- more difficult to control in all phases of flight
- pitch up easily on takeoff
- may be impossible to recover from stall
___ increases as the CG moves forward and ____ as CG moves rearward
Stability / decreases
What are some examples of neglible and ignored load shifts during flight
- fuel consumption
- Raising/lowering landing gear
____ is a principle that must be thoroughly understood before a discussion of aircraft weight distribution
Balance
Who designates the aircraft’s MAC
Manufacturer
____ outlines and defines the requirements, procedures, and responsibilities for weight and balance control of USAF aircraft
T.O. 1-1B-50
_____ is used to provide a permanent continuous record of the personnel responsible for maintaining the aircraft weight and balance handbooks
Record of Weight and Balance Personnel:
DD Form 365
___ is a list of operating equipment that is or may be installed on the aircraft
Basic Weight Checklist Record:
DD Form 365-1 (Chart A)
____ used to record data obtained from the actual weighing of the aircraft
Aircraft Weighing Chart:
DD Form 365-2 (Form B)
____ is a continuous history of the basic weight, basic moment, and balance computer index resulting from structural and equipment changes while the aircraft is in service
Basic Weight and Balance Record:
DD Form 365-3 (Chart C)
____ helps you solve loading problems for the applicable aircraft
Aircraft Loading Table:
Chart E
____ is a summary of the actual weight and disposition of the load in an aircraft
Weight and Balance Clearance:
DD Form 365-4 (Form F)
2 versions of the Form-F are provided: _____ and ____
- Stays with the aircraft for the duration of the mission
- Stays with departing airfield
___ is the sum of the moments of all items making up the basic weight of the aircraft and recorded on the 365-C, Chart C.
Basic Moment
____ allows the flight engineer to check the weight limits before takeoff
Weight and balance control system
One of the most important responsibilities of the flight engineer is to ensure the aircraft ___ meets the weight and balance guidelines
Load
The balance point of an aircraft found by dividing the total moment by the total weight of the aircraft is _____
Aircraft CGA or Average arm
____ is the aircraft’s ability to resist any force which may cause the nose to pitch up, returning to the original angle of attack when the force is removed
Longitudinal Stability
_____ is the lift produced by the wing, concentrated at a point approximately 1/3 aft of the leading edge of the MAC
Center of lift
Aircraft manufacturers measure the width of a wing in several places, adding those measurements and dividing by the numbers measurements taken to get the ___
Mean Aerodynamic Chord (MAC)
T/F The center of gravity of an aircraft may slightly exceed either the forward or aft CG limit
False; center of gravity should never exceed the CG limit
____ is the measurement of the distance from the RDL to the forward edge of the MAC
Leading Edge of MAC (LEMAC)
Basic aircraft weight and the moment around located where ___
Chart C
Total weight and moments of references 1-8 is called the ____
Operating Weight
Operating weight and takeoff fuel are ____
Total aircraft weight
___ is the “Not To Be Exceeded” weight of the aircraft
Allowable gross weight
