Contents
Where is the CG of an aircraft?
Weight and balance. the imaginary point at which all the weight is concentrated. To provide the necessary balance between longitudinal stability and elevator control, the CG is usually located slightly forward of the center of lift.
What is the CG range?
operating CG (center of gravity) range The distance between the forward and the rearward center of gravity limits at a specified weight as specified in the aircraft specifications or Type Certificate Data Sheets. An aircraft must be loaded and operated within this range.
Where is CG measured from?
1.2 Equilibrium Considerations for the Human Body The center of gravity (c.g.) of an erect person with arms at the side is at approximately 56% of the person’s height measured from the soles of the feet (Fig. 1.3).
How does a tiltrotor work?
Tiltrotor design combines the VTOL capability of a helicopter with the speed and range of a conventional fixed-wing aircraft. In this mode the rotors provide thrust as a propeller, and the airfoil of the fixed wings takes over providing the lift via the forward motion of the entire aircraft.
What will happen if CG is too far aft?
If the CG is too far aft, it will be too near the center of lift and the airplane will be unstable, and difficult to recover from a stall. If the unstable airplane should ever enter a spin, the spin could become flat and recovery would be difficult or impossible.
What is empty weight CG range?
The fuel tanks, seats, and baggage compartments of some aircraft are so located that changes in the fuel or occupant load have a very limited effect on the balance of the aircraft.
What is the effect of aft CG on performance?
Aft CG. The relationship between aircraft performance and CG location is simple: by moving the CG forward and aft, you change the amount of tail down force and lift you need for stable flight. If you need more lift, you create more induced drag, and your performance goes down.
Is it possible to calculate the center of gravity?
You can calculate the center of gravity. But in general, this is a complicated procedure requiring the use of calculus. This figure shows a simplified version of the center of gravity calculation that you can use.
Where is the center of gravity on the body tube?
For some simple shapes, finding the cg, or average location of the weight, is quite simple. For example, when viewed perpendicular to the axis, the body tube is rectangular. The center of gravity is on the axis, halfway between the end planes.
Where is the center of gravity for an irregular shaped object?
The center of gravity is the point where the lines intersect. This procedure works well for irregularly shaped objects that are hard to balance.