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How is stalling speed affected by the position of the Centre of gravity?
As the CG moves forward, the wing must now produce more lift, and hence the stalling airspeed increases (as the square root of the effective wing loading). On the other hand, as the CG moves rearward, less tail downforce is required and the stalling speed decreases.
Why forward cg increase stall speed?
The only way to continue level flight is to increase angle of attack in order to increase lift – that means that for the same aircraft weight, a forward C.G. will cause you to fly at a higher angle of attack and thus closer to the critical angle of attack, and therefore you increase the stall speed.
Does pressure altitude affect stall speed?
Your indicated (IAS) stall speed stays the same because it is not directly affected by density altitude changes. However, your true airspeed stall speed does increase with altitude.
What happens to the center of pressure when approaching stall?
Ideally it will do so near the trailing edge of the wing root, and the separation will slowly progress forward and outward as angle of attack increases. This separation will shift the local center of pressure back, such that the aircraft will experience an increasing nose-down moment as it approaches stall.
What are the factors that affect stall speed?
These only apply for the stated conditions: often level flight, maximum gross weight, and most forward center of gravity, with flaps retracted (VS1) or in the landing configuration (VS0). Factors such as total weight, load factor, power, and center of gravity location affect stall speed—sometimes significantly.
When does the stall speed of a wing decrease?
A stall occurs when the wings reaches its critical angle of attack. At greater weights, the wings will have to produce greater lift. The T force is a weight that has to be countered by CL. If CL is closer to CG, less T is required and the stall speed will decrease.
When does a stall occur what happens to the lift?
A stall is a condition in aerodynamics and aviation such that if the angle of attack increases beyond a certain point, then lift begins to decrease. The angle at which this occurs is called the critical angle of attack.