Abstract:It is necessary to investigate a civil aircraft spin recovery characteristics by using multiple control surface deflection. Normal wind tunnel static model force measurement results were detailed analyzed firstly. TDPF~[(Ix-Iy)/mb2] method which was studied by NASA Langley research center was also used to judge the aircraft spin recovery characteristics. A dynamic similarity scaled model was tested in spin tunnel, the best spin recovery action was found, that is to reverse rudder and forward stick. Furthermore, to increase the safety of aircraft flight test, it is also necessary to add an antispin parachute system, so it is important to design an appropriate antispin parachute. Based on the open information around the world, several antispin parachutes with different size and different rope length were designed, and the effect of these antispin parachutes was demonstrated by spin tunnel tests. The results show that the larger the parachute size is, the better the recovery effect could be, and middle length rope should be considered as the best results.