Hello Friends,
I am SKPatel007
I love space and Plaints.
So, I share some information about Apollo 15.
Apollo 15 is mission to go on moon for research and experiments.
Apollo 15
First of the Apollo J mission series which were capable of longer stay times on the Moon and greater surface mobility, Apollo 15 had four primary objectives which fall into the general categories of lunar surface science, lunar orbital science, and engineering/operational.
The mission objectives were:
To explore the Hadley-Apennine region
To set up and activate lunar surface scientific experiments
To make engineering evaluations of new Apollo equipment
To conduct lunar orbital experiments and photographic tasks.
Exploration and geological investigations at the Hadley-Apennine site were enhanced by the addition of the lunar roving vehicle that allowed Scott and Irwin to travel greater distances from the LM than they could on foot during their three EVAs. The Apollo lunar surface experiment package (ALSEP) was the third operating ALSEP along with Apollo 12 and 14.
Orbital science experiments were primarily concentrated in an array of instruments and cameras in the scientific instrument module (SIM) bay of the spacecraft service module. Command module pilot Worden operated these instruments during the period he was flying solo and again for two days following the return of the astronauts from the lunar surface. After transearth injection, he went on an EVA to retrieve film cassettes from the SIM bay.
Engineering and operational tasks the Apollo 15 crew carried out included
evaluation of the modifications to the lunar module which was made for
carrying a heavier payload and for a lunar stay time of almost three days,
changes to the Apollo spacesuit and to the portable life support system, and
performance of the LRV.
Launch
July 26, 1971; 9:34:00 a.m. EDT
Launch Pad 39A
Saturn-V AS-510
High Bay 3
Mobile Launcher Platform-3
Firing Room 1
Crew
David R. Scott, Commander
James B. Irwin, Lunar Module Pilot
Alfred M. Worden, Command Module Pilot
Richard F. Gordon Jr., Commander
Harrison H. Schmitt, Lunar Module Pilot
Vance DeVoe Brand, Command Module Pilot
Backup
Moon Exploration
Moon SaluteThe astronauts completed three EVAs, one each day for three separate days, spending more than 18 hours on the lunar surface. They travelled a total 27km (17 miles) in the rover, exploring the beautiful canyon of Hadley Rille, plains and deltas. They set up an ALSEP and gathered 76.6 kgs (169 lbs) of interesting rocks, including the “genesis” rock, thought to date from the early solar system and a rock that contained tiny spheres of green glass.
During the third EVA, commander David Scott dropped a feather and a hammer at the base of Mount Hadley Delta. This was to demonstrate that in an airless environment, all objects fall at the same speed regardless of weight.
Earth Landing
Apollo 15 Capsule with ParachuesDuring Earth re-entry and descent, one of the 3 parachutes failed to open fully. As a result, descent velocity was 4.5km/hr (2.8mph) faster than planned. The Command Module splashed down at 4:45pm EDT on August 7, 1971 in the Pacific Ocean. The recovery ship was USS Okinawa.
Summary Stats of the Mission
Lunar Orbits: 74 revolutions (145 hours)
Duration: 12 Days, 17 hours, 12 min
Lunar Location: Hadley-Apennine
Lunar landing Co-ordinates: 26.08 degrees North, 3.66 degrees East.
Time on Lunar Surface (total): 66 hr. 54 min. 53 sec.
Mission Duration: 295 hr. 11 min. 53 sec.
Lunar Rover Weight: 209kg
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