A method for reducing dynamic loads during switching stages of multistage hydraulic cylinders of launch vehicles rising drive

• Main Authors: lgritskaia, A., Zabegaev, A., Zverev, V., lgritsky, V.
• Format: Conference Proceeding
• Language: English
• Subjects: Cylinders; Dynamic loads; Hydraulics; Switching; Vehicles; Vertical orientation
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0036242

To lift launch vehicles to a vertical position, multistage hydraulic cylinders are usually used, the process of switching the stages of which is one of the sources of inertial loads on the launch vehicle. The possibility of reducing these loads by using two pairs of symmetrically mounted hydraulic cylinders, which differ in the angles of the initial installation, which allows time differences in the switching stages to be separated is considered in the paper. An analysis is made of the influence of the initial angles of installation of hydraulic cylinders on the change in the timing of switching stages for hydraulic cylinders with a different number of stages. An example of the implementation of the proposed method is given and the effect of its use on the dimensions of hydraulic cylinders providing a launch vehicle in vertical position when using the proposed method is compared with the sizes of hydraulic cylinders required when all four hydraulic cylinders are installed at optimal starting angles in terms of minimizing their size. The results obtained show that, at least in the considered case, the application of the proposed method slightly increases the cost of producing the required hydraulic cylinders, which allows us to consider the method promising for improving the quality of work of promising units for installing launch vehicles in a vertical position.