The motion parameter of the underwater glide vehicle, such as velocity, pitching angle and attack angle has definite fluctuate when the underwater glide vehicle change the glide mode
, and they would get stabilization at a definite time.
Energy used in the soar and glide mode
of flight for a hypothetical raptor, depending on its weight and wing area, is 10-40% of the energy used in powered flight.
There was no guidance available in the operations manual as to how the American-owned Boeing 747 cargo plane would perform in glide mode
, said the Air Accidents Investigation Branch report.