For checking out equipment compatibility to be used in Apollo/Soyuz mission, a full-scale mockup of Soyuz spacecraft was developed comprising Apollo spacecraft docking module simulator, Soyuz spacecraft orbital module, and descent vehicle.
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Background: For checking out equipment compatibility to be used in Apollo/Soyuz mission, a full-scale mockup of Soyuz spacecraft was developed comprising Apollo spacecraft docking module simulator, Soyuz spacecraft orbital module, and descent vehicle. The mockup also contains the instrument assembly model of Soyuz spacecraft which is installed nearby.
Outside the orbital module there are the elements of compatible systems provided for Apollo and Soyuz rendezvous and docking, two VHF antennas with deploying mechanisms for Apollo Transceiver, a docking target for the Apollo crew to define spacecraft mutual attitude when docking, onboard orientation lights on the solar panels, and flashing beacons on the instrument assembly module body.
Inside the descending module are arranged the cosmonauts couches; left common signal device, the panel having indicator and control means; right common signal device, equipment of gas-purging system to the space-suits. Above the flight engineer's couch is the panel for controlling radio communication, onboard orientation lights, and flashing beacons.
The descent vehicle lighting system consists of two lamps for working illumination and four lamps for special work. For fixing TV and film-shooting cameras in the descent vehicle, special brackets are used. Film shooting could be also done by the cosmonauts handling.
Integrity check system from the panel. In accordance with agreed-to program, the compatibility check of the movie, photo, and TV equipment was conducted on the Soyuz mockup in June 1974 with participation of both Soviet and American specialists. American specialists were familiarized with the Soyuz configuration, location of external components, and different equipment.
During the tests, the following items have been checked: accessibility of equipment to be jointly used, mechanical plugging of connectors to the junction box, installation and operational conditions in the Soyuz for the Apollo TV and movie cameras. Besides that were verified the spacecraft internal illumination system, scenes for TV transmission. During the tests, measurements of interior illumination were conducted; brightness and special characteristics of all types of lamps were updated. For the Apollo TV camera, optimum conditions of high-quality colour image were obtained. Transmission quality assessment was conducted. All data were recorded by the video tape recorder, displayed on the oscellograph, and photographed. The test photography and film shooting were taken in the flight lighting conditions with different types of films employed. Places for film shooting and points for cameras' installation were defined.
During joint activities, the Soviet specialists familiarized American specialists with some hardware of the Soyuz assemblies. Prior to joint training activities at the Gagarin Cosmonaut Training Centre, the specialists of both sides informed the U.S.S.R. and U.S.A. crews of the mockup test results. Then the crews were given an opportunity to familiarize with the Soyuz configuration and hardware on the Soyuz mockup. The subsequent phase of preparation for the joint Apollo/Soyuz space mission is completed.