Parameters and Characteristics of Parachute Systems for Physical Modelling Precision Airborne Cargo Landing

The main requirements facing the developers of controlled precision airborne cargo landing systems (CPACLS) are to reduce cargo losses and improve landing precision. Modern theoretical knowledge, computational and experimental methods are used to satisfy them. Leading among them is the method of physical modelling of flight modes on free flying dynamically similar models (FDSM). In the problem under consideration, the theoretical foundations of this method are used to substantiate the possibility of conducting flight researches on FDSM of the modes of separation of CPACLS from the carrier aircraft, deployment of the parachute system and performance of steady-state flight in the vertical plane until the moment of cargo landing. At the same time, a literature review was carried out, aimed and analyzing features of device, design and flight tests of parachute systems of CPACLS, as well as similar design and research work on FDSM. The conditions and scales of similarity used in creating FDSM and carrying out flight researches of the parachute system of the CPACLS. The conditions of similarity and technical feasibility of a FDSM in the task of creating model parachute systems and carrying out flight researches of the considered stages of landing of CPACLS are revealed. The ratios for selection of structural materials, and also determination of required and available values of parameters and characteristics of parachute systems of FDSM at modelling of landing of CPACLS are received.