Conditions in Diving Available to Purchase

ASSUME an aeroplane in pure dive, i.e. the motion of the centre of gravity of the aeroplane is purely vertical. The airscrew is stopped and the diving aeroplane may be treated like a diving glider. The only difference is in the value of drag. It is assumed that the aeroplane is infinitely stiff, wings are not subject to twisting, etc. The aeroplane starts to dive from a certain height h with a certain initial velocity vi which in a special case may be equal to zero. To calculate the velocity which the aeroplane will reach at the height x the Neumark formula is applied: