Blade missile， characterized by a small killing range and low damage effect， is suitable for special operation missions. In consideration of the effects of spin and flow velocity on the aerodynamic force of blade missiles in both deployed and retracted states， the variation of aerodynamic parameters during transonic flight was investigated. The sliding grid technique was applied to divide the flow field into a stationary region and a rotating region surrounding the missile. The ICEM CFD preprocessing software was applied to generate seven million grids by a multi-block splicing method， with a turbulence model and boundary conditions set. A simulation model of the blade missile was established， and the grid convergence and time step independence were verified. The aerodynamic characteristics of the blade missile during deployment and retraction were investigated， and the pressure distribution law of the external flow field at different positions of the missile was calculated under different Mach numbers and spin speeds. The calculation results show that the aerodynamic parameters increase first and then decrease with velocity， and they reach a maximum value at a Mach number of around 1.2， which has certain guiding significance for the development of blade missiles.

Accurately evaluating missile products with the characteristics of "long-term storage and one-time use" is a prerequisite and key to achieving safe storage， reliable use， and reasonable maintenance， which has significant military and economic benefits. However， existing storage reliability evaluation methods do not consider the phenomenon of "upside down" and incomplete data of missile products， resulting in low evaluation accuracy. According to the three characteristics of missile product life data， a minimum Chi-square estimation method based on order preserving regression is proposed in this paper. First， isotonic regression method is used to solve the problem of "upside down" in stored information. Then， the storage reliability is evaluated by the minimal Chi-square estimation method， and the goodness of fit is determined based on chi-square statistics. Finally， using the missile to store information naturally， the traditional method is compared with the method established. The results show that the establishment method significantly improves the rationality and accuracy of missile storage reliability evaluation and lays a foundation for scientific life determination and maintenance of equipment products.