Figure 7.3. Graph of changes in telemetric parameters during docking of Soyuz-19 and Apollo, a. linkage; b. equalization; c. beginning of coupling; d. contact of plungers; e. contact of frames; f. uncalculated actuation of the jet control system of Apollo; g. uncalculated operation of jet control system of Apollo; h. angles of rotation of ring of APDA; i. angular velocities of Soyuz spacecraft; j. t, s. reproduced from contact to linkage, which made it possible to determine the initial velocities in this docking and the parameters of the coupling process up to rigid connection of the joint. Flight testing confirmed the sufficiency and effectiveness of blocking of the issuing of commands linked with undocking and the exchange and content of signals to the cosmonaut's control panel. Tn the preparation for flight testing, pre-flight verification of equipment, the compilation of on-board documentation, training of crew and control personnel, one
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