The center of gravity (or CG) depends on the particular type of aircraft due to each type having different overall size characteristics. Aircraft have lateral CG's, Longitudinal CG's, and even Vertical CG's. Each has to be taken into consideration, but the Longitudinal CG (Forward and Aft) is the most important. The aircrafts center of lift is where this CG is located. There is a Forward CG limit, and an Aft CG limit. Depending on the flight characteristics of the type of aircraft, your CG window could be bigger, or smaller.
the CG is where you can balance it on you finger
The center of gravity is a point on the airplane that the airplane would balance while sitting on the ground. The center of gravity or also called "the CG" is important in trimming the aircraft in flight as the weight has to balance out the forces on the wing. It is also important in aerodynamic maneuvers as the G-forces act through CG.
The airplane will tilt like a helicopter or just crash upon takeoff
If the cg is not with in range the airplane will crash.
The center of mass and center of gravity serve two separate purposes. As an individual, your center of gravity and center of mass remains the same. The earth has a center of mass. The moon has a center of mass. The moon does not orbit the earth. They orbit their center of gravity. Their center if gravity is always changing. It is not a fixed point. When an airplane takes off, its center of gravity is one place. As it burns fuel, its center of gravity changes. It might be necessary to change its attitude, which today is done automatically by computers. The computers are checked at the end of the flight by human beings.
It shifts the center of gravity forward. If the paper airplane originally had the center of gravity too far back, causing it to nose up and stall a paperclip or two can correct this and produce stable flight. If the paper airplane originally had the center of gravity correctly positioned or was too far forward the paperclip will cause it to nose down and crash.
The placement of the center of gravity (CG) and the center of lift (CL) affects pitch stability. When engineers design an airplane, it is usually designed so the center of gravity is placed forward of the center of lift. With this "built in stability" if a plane goes into an abrupt dive, the aerodynamic forces will bring the nose back up to level flight.
You must find the center of gravity by balancing it. Add weight to the front of the plane. This keeps a flight stable.
Gravity.
Gravity
Gravity
Weight of an object in a flying airplane will lessen very, very, very slightly due to being farther from the center of the earth (gravity), but its mass remains constant.