Soyuz-5 is a promising Russian two-stage medium-class launch vehicle that will be capable of launching up to 17 tons of payload into low Earth orbit. Accordingly, it is necessary to have a suitable launchpad to launch a new launch vehicle. For these purposes, launchpad No. 45 at Baikonur was chosen, the equipment of which was previously used for launches of the Zenit launch vehicle.
The astronaut landing and evacuation unit for the Soyuz-5 launch vehicle with the Orel software and hardware complex was designed on the basis of the existing ALEU (unit 11T187) for the Zenit launch vehicle at the Baikonur cosmodrome, shown in Fig. 1.
The unit for landing and evacuation of astronauts is designed for the pre-launch preparation of space rockets. It will provide access for personnel, supply of instruments, fixtures, etc. to all systems of the launch vehicle, which is in a vertical position at the launch system of the cosmodrome. The unit protects the rocket and the space warhead from environmental influences and has a system for rapid evacuation of personnel from all levels of the tower. The ALEU infrastructure provides for elevator and crane equipment, stairs, service platforms at different levels to provide all-round access to the rocket, as well as air ducts for the temperature control system of the space head, electrical equipment, a control system, communications, warning and television surveillance.
The main objectives of the static calculations of the unit are to ensure the strength and rigidity of the structure, to ensure the overall stability of the unit for any combination of operating loads.
To carry out a static calculation in the selected program Sadas 2017, a simplified design diagram was made and the standard sizes of the sections were selected.
11T187 ALEU has not been serviced for a long time, its components and equipment are obsolete and destroyed.
The volume of improvements to the ALEU design due to the increase in the dimensions of the Soyuz-5 rocket instead of the Zenit (diameter of steps, software and hardware complex and length of the ILV):