A
what is center of gravity?
a balance point.
the sum of the negative and positive moment is equated to zero.
what is the definition of "arm"?
horizontal distance in inches from the reference point (datum)
is it more dangerous to fly an aircraft in a nose heavy or a tail heavy attitude?
tail heavy
what is the datum?
an imaginary vertical plane or line from which all horizontal measurements are taken for the purpose of weight and balance.
what is "moment"?
a rotational force
what is the primary purpose of weight and balance?
safety
what is the definition of "overloading"
Exceeding Max Gross Weight for the aircraft.
what is the definition of EWCG? (empty weight center of gravity)
the center of gravity of the empty aircraft
what is maximum gross weight of the aircraft and where can it be found?
the weight of the aircraft and its contents as listed in the TCDS
what is a weighing point?
the point where the aircraft is supported when it is weighed
when must weight and balance calculations be done?
after repair/alteration.
anytime fixed equipment is removed and/or installed
how often must privately owned and operation general aviation aircraft be placed on scales and weighed?
never, by law.
what is empty weight CG range?
the allowable variation of travel in empty weight CG
what is straight line variation?
indicated that the CG changes as weight is added.
what is the purpose of a weight check?
to see if the aircraft can be loaded and exceeds its max gross weight
where must weight and balance be recorded?
Log Book, Equipment List, and on FAA form 337 if the major repair or alteration caused a weight and balance change.
what are leveling means and where are they found?
reference point used to make sure aircraft is in a level flight attitude, found in the TCDS.
what is the mathematical formula to find "moment"?
weight x arm = moment
what are the 2 most commion devices used to check that the aircraft is level on the scales?
carpenters level
plumb bob and reference mark
how may useful load be calculated?
max gross weight - empty weight
how do we solve for EWCG?
total moment/total net weight
what is METO and how is it calculated?
enough fuel for .5 hour of flight time.
METO hp/2= av gas in pounds
how do we create an extreme forward adverse loading condition?
maximize all the weight on or forward of the forward limit. Minimize all the weights aft of the forward limit.
what does useful load consist of?
crew, usable fuel, passengers, cargo.
if a 60 pound generator applies 1,800 inch pounds to a reference axis, the generator is located where?
+30 from the axis