7/21/2023 0 Comments Swingset negative g forceWhile they were, during the ascending flight at constant velocity, no acceleration existed, either positive or negative, but if you reduce the lift, drag does -momentarily- prevail, the ascending velocity decreases, and a negative acceleration will appear. In the case of a gyro, suppose you are flying in ascending flight, that is, with a given vertical component, and if you reduce the vertical velocity (by closing the throttle, or by easing the stick forward) a negative acceleration will appear, because you are moving within the atmosphere, and forces (vertical lift - vertical drag) cease to be balanced. If that negative acceleration has a higher value than 9,8 m/s2, then you'll hit the roof. The air drag will slow down the rocket, inducing a negative acceleration in your body. Imagine you are moving upwards in a rocket, within the atmosphere, and that the rocket engine suddenly stops. You have 'negative Gs' when the balance is negative. I agree that negative Gs should be avoided and it would help me to understand what to avoid. I would like to understand what sequence of control inputs would cause a gyroplane to fly to negative Gs. The results were surprisingly (to me) similar for such different gyroplanes. 6 Gs or much above two Gs even in what I felt were very aggressive maneuvers in either aircraft. I had a G meter on both The Predator and Puff and I was not able to get much below. It is hard for me to understand how a gyroplane can accelerate downward faster than gravity (thirty two feet per second per second). I have been in a fixed wing in turbulence and had to tighten my seat belt to keep from hitting the roof with my head. I find it easy to see how a fixed wing can achieve negative Gs because its wing will work in either direction and the aircraft can be accelerated down ward. It is my understanding that Gs (gravity) is about acceleration. I read in many threads on the Rotary Wing Forum that negative Gs should be avoided in a gyroplane.
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