Aerospace vehicle mass estimation method

The invention belongs to the field of overall design of single-stage injection aerospace vehicles, and particularly relates to an aerospace vehicle mass estimation method. Comprising the steps of 1, obtaining a general equation of an aircraft acceleration process; 2, constructing a mass ratio estimation model of a rocket propulsion mode according to the general equation of the aircraft acceleration process; 3, according to the general equation of the aircraft acceleration process and the mass ratio estimation model of the rocket propulsion mode, constructing a mass ratio estimation model of an air-breathing propulsion mode; and 4, constructing a mass estimation model of the single-stage injection aerospace vehicle according to the mass ratio estimation model of the rocket propulsion mode and the mass ratio estimation model of the air-breathing propulsion mode. According to the method, estimation of the total mass of the single-stage injection aerospace vehicle is completed, the dynamic mode conversion point,