Description: Drives of catapults are developed on base of various physical principles - the accumulation of the potential energy of the elastic elements, the untwisted flywheel, the compressed gas and others. Drives of catapults are devices of pulse action to which has demands determined by restriction of the maximum permissible overload. Performance of these conditions leads to choice of the design-layout of a catapult and its parameters. The gas power cylinder is applied to the transformation of its internal energy to the kinetic as an energy source of the offered drive of a catapult. The problem of mathematical apparatus development for the catapult parameters analysis, which provides necessary requirements to its work, is actual. In an article the design-layout of a single-stage pneumocylinder with built-in receiver is considered. The mathematical model of gas-dynamic processes that occur at work of a pneumodrive is developed. We received the analysis of catapult drives parameters on the full factorial experiment design basis. Due to small quantities of the criteria’s of dynamic similarity design managed to cover the whole area of the existence of pneumatic catapults with a built-in receiver. This method allows define the aerial vehicle velocity and its overload at end of catapult without using complex computational software for catapult design and large numbers of simulations. The considered approach to the definition of catapult parameters with a single-stage pneumocylinder drives possible use when the aerial vehicle catapults design is performed.
Keywords: catapult, pneumocylinder, speed, acceleration, overload