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EST January 23, LM stages have been left in orbit to reenter the ambiance later and disintegrate. EST – one second later than planned. Following a traditional launch section, the S-IVB stage inserted the spacecraft into an orbit of 192.3 by 189.Three kilometers. Throughout the second-stage (S-II) boost phase, two of the J-2 engines shut down early and the remaining three had been prolonged approximately one minute to compensate. They determined that the problem was one in every of guidance software only (and never a fault in hardware design) and pursued an alternate mission plan that ensured assembly the minimum necessities crucial to attain the first objectives of the mission. At 3:08 p.m. EST, the docked spacecraft were separated from the S-IVB, which was then positioned on an earth-escape trajectory. The onboard radar malfunctioned before the terminal section provoke maneuver, but the crew used onboard backup procedures to calculate the maneuvers.

After two revolutions in a parking orbit, during which the systems have been checked, operational assessments carried out, and a number of other attitude maneuvers made, preparations had been accomplished for the S-IVB engine restart. The GATV main and secondary propulsion methods had been used for six maneuvers to put the docked spacecraft into position for rendezvous with the Gemini VIII GATV as a passive goal. Among the secondary targets were tethered automobile evaluation, experiments, third revolution rendezvous and docking, computerized reentry demonstration, docked maneuvering for a excessive-apogee excursion, docking apply, methods tests, and Gemini Agena target car (GATV) parking. EVA was profitable, but one secondary goal – analysis of the astronaut maneuvering unit (AMU) – was not achieved because Cernan’s visor began fogging. The spacecraft was then undocked to begin the tether analysis. To conserve gasoline and permit remaining goals to be met, the spacecraft remained docked with the GATV for about 39 hours. A gasoline cell stack failed at fifty four hours 31 minutes, however the remaining five stacks shared the load and operated satisfactorily. This burn lasted 5 minutes.

The spacecraft undocked at 44 hours 40 minutes ground elapsed time, separated from the GATV, and used its personal thrusters to finish the second rendezvous some three hours later. Using the GATV-10 Primary Propulsion System (PPS), the docked automobiles achieved a manned-flight altitude document of 476 miles. The PPS was fired again, three hours 23 minutes later, to cut back apogee to 164 nautical miles. Cernan reentered the spacecraft, and the hatch was closed at fifty one hours 28 minutes into the flight. The second midcourse correction, about sixty one hours into the flight, changed velocity by 1.5 kilometers per hour.The 4-minute 15-second lunar-orbit-insertion maneuver was made 69 hours after launch, placing the spacecraft in an initial lunar orbit of 310.6 by 111.2 kilometers from the moon’s surface – later circularized to 112.4 by 110.6 kilometers. Type: Manned lunar lander. The hatch was opened a third time about an hour later to jettison extraneous equipment earlier than reentry. An hour later the hatch was opened to jettison tools not required. The hatch was opened for EVA at 49 hours 23 minutes ground elapsed time. During this period, a bending mode test was carried out to find out the dynamics of the docked autos, standup extravehicular activties (EVA) had been conducted, and several other experiments have been performed.

Some 10 minutes after completion of the S-IVB burn, the spacecraft and S-IVB stage have been separated, and lower than 2 minutes later the service propulsion subsystem was fired to raise the apogee. Major objective of the mission was achieved through the fourth revolution when the spacecraft rendezvoused with the GATV at 5 hours 23 minutes ground elapsed time and docked with it about half-hour later. Flight: Gemini 10. Spacecraft Bus: Agena. 1968 October 11 – . 1968 December 21 – . 1968 April 4 – . 1968 January 22 – . Eleven hours after liftoff, the primary midcourse correction increased velocity by 26.Four kilometers per hour. A ground command was sent to the CSM to carry out a deliberate alternate mission, and the CSM separated from the S-IVB stage.A service propulsion system (SPS) engine firing sequence resulted in a 442-second burn and an accompanying free-return orbit of 22,259.1 x 33.Three kilometers. Payload: Apollo CSM 104 / Apollo LM 3 / Saturn S-IVB-504N. Spacecraft: Apollo CSM. Duration: 2.35 days.