Some peculiarities of using hot-air balloons in testing parachute systems are described in the paper. The main aim is to reduce expenses while testing parachute systems. Similarity criteria such as Froude number and Newtons number were used to assess the reliability of the results of testing scaled-down models of parachute systems. https://parisnaturalfoodes.shop/product-category/kimchi-style-sauerkraut/