MISSION APOLLO 15

Mission objective

1. To deeply explore the lunar surface.
2. To collect samples from Hadley (Apennine region).
3. To perform engineering analysis of the new Apollo equipment.
4. To perform scientific and orbital experiments on the lunar surface.
5. To perform photographic tasks of the lunar surface and in-flight photography also.



Apollo 15, a manned spaceflight mission was the 9th mission of the Apollo space mission program and also the fourth manned spaceflight mission to land on the moon's surface. Apollo 15 mission was the first mission of the Apollo's "J" mission type. It was also the first mission which used the Lunar roving vehicle on the moon's surface. Apollo 15 was launched from the Kennedy space center (U.S.A) with the help of Saturn V rocket boosters. The spaceflight was launched on 26th July 1971 at 9:34 EDT. The Apollo 15 mission was crewed by three astronauts or the crew members. The commander of the mission - David Scott, The pilot of the lunar module(Falcon) - James Irwin and the pilot of the Command module(Endeavour) - Alfred Worden.


The total duration of Apollo 15 mission was 12 days, 7 hours, 11 minutes and 54 seconds. According to NASA, it was the most successful manned spaceflight mission ever in the Apollo space mission history. While crossing the earth's orbit, the third stage Saturn V rocket propelled them to the lunar's orbit. Mission commander David Scott and lunar module pilot James Irwin safely began to land on the landing site, Hadley Rille while the command module pilot, Alfred Worden stayed in the lunar orbit inside CSM. Astronaut David Scott and James Irwin touched the lunar surface on 30th July at 22:16:29 UTC. During the landing of the lunar module, one of its leg was tilted by 10 degrees because the module was landed on a small crater. But that was not a big issue for the lunar module as the NASA engineers have constructed the lunar module and its mechanism very smartly. Alfred orbited the moon from inside the service module and studied the moon's environment and surface using the scientific tools and equipments.


The lunar module was landed near Hadley Rille(also called Marsh of decay). They used the Lunar Rover to explore the surface and also they collected 77 kilograms of lunar soil to be taken back to earth. They completed all the three surface EVA's or the Moonwalks. After the completion of all the task, astronaut Scott and Irwin became the seventh and eighth astronaut to walk on the moon's surface. Before returning back to the lunar module, they planted the U.S flag on the moon's surface and captured that great moment in the camera.

After lifting up from the lunar surface, the lunar module re-docked with the command/service module. After shifting and setting up the equipments and samples, the lunar module's ascent stage was sealed tightly, jettisoned and purposely crashed into the lunar surface. With all the job done, they ignited the SPS engine of the command/service module and exited the lunar orbit. On the next day, astronaut Alfred Worden wanted to perform a Spacewalk in the middle of the huge space to recoupe film from outside the service module. He performed & executed the spacewalk very easily and safely. The Spacewalk Act in the middle of the open space was never done before in the history of NASA manned space missions.


On proceeding towards the earth next day on 7th August, the crew members jettisoned the service module away from the command module at a safe distance. And finally, after few minutes the command module entered the earth's atmosphere. During the deploying of the CM's parachute, one of the parachute was failed to open. But with the help of two parachutes, the CM safely landed in the North Pacific Ocean. The CM(command module) had performed a safe and normal splashdown with the support of only two parachutes. After the splashdown, they were recovered by the US ship "Okinawa".

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