A projectile and a method of assembling the same, includes a body having a cavity, a propellant disposed in the cavity and a base including an ignition flash column extending into the cavity containing the propellant and a nozzle formed so as to be openable and closeable. The inventors have recognized that the deflection beam or deflection beams of an MEMS shunt switch are a failure point in need of improvement. The air valve includes first and second sealing films overlapped between the first and second cell layers, and a check sealing film overlapped between proximal portions of the first and second sealing films to define an air inflating channel between the first sealing film and the check sealing film, and a backflow prevention channel between the check sealing film and the second sealing film. The MPS management server obtains data from external information systems by use of a data retrieving module, and generates an original MPS based on the obtained data for simulating the RCCP and the MRP. Thus a backlight proper for a large display panel may be provided. , antimony trioxide or antimony pentoxide, and a quencher such as a brominated organic compound, e.