What occurs to indicated airspeed if the CG is at the most forward allowable position while maintaining constant power and altitude?

What occurs to indicated airspeed if the CG is at the most forward allowable position while maintaining constant power and altitude?

• A. Indicated airspeed will be more than it would be with the CG in the most rearward position
• B. Indicated airspeed will remain constant
• C. Indicated airspeed will be less than it would be with the CG in the most rearward position
• D. Indicated airspeed will be significantly higher

Answer: (C)

When the center of gravity (CG) is located at the most forward allowable position, the aircraft tends to require a higher angle of attack to maintain level flight compared to when the CG is positioned toward the rear. This is because the forward CG configuration creates a nose-heavy condition which needs additional lift to counteract the weight of the aircraft and maintain altitude.

As the angle of attack increases to generate the necessary lift while maintaining constant power and altitude, the induced drag also increases. The higher induced drag could lead to a decrease in indicated airspeed, as the aircraft's power remains constant and the drag force increases. This is because the aircraft must fly at a higher airspeed to overcome both the additional drag and the increased angle of attack that results from the forward CG position.

Therefore, it is correct to conclude that indicated airspeed will be less than it would be with the CG in the most rearward position due to these aerodynamic factors.