Apollo 15
One of 27 caches representing all United States Spaceflight Missions of Projects Mercury, Gemini, and Apollo. This was the 9th of 11 Apollo flights and the 25th of the 27 flights. Click here to see all 27 US Spaceflight caches.
The Apollo 15 spaceflight was the ninth crewed mission in the United States' Apollo program, the eighth to be successful, and the fourth to land on the Moon. It was the first J mission, with a longer stay on the Moon and a greater focus on science than earlier landings. Apollo 15 saw the first use of the Lunar Roving Vehicle.
The mission began on July 26, 1971, and ended on August 7, the lunar surface exploration taking place between July 30 and August 2. Commander David Scott and Lunar Module Pilot James Irwin landed near Hadley Rille and explored the local area using the rover, allowing them to travel further from the lunar module than had been possible on previous missions. They spent 181⁄2 hours on the Moon's surface on extravehicular activity (EVA), and collected 170 pounds (77 kg) of surface material.
At the same time, Command Module Pilot Alfred Worden orbited the Moon, operating the sensors in the SIM bay of the service module. This suite of instruments collected data on the Moon and its environment using a panoramic camera, a gamma-ray spectrometer, a mapping camera, a laser altimeter, a mass spectrometer, and a lunar subsatellite deployed at the end of the moonwalks. The lunar module returned safely to the command module and, at the end of Apollo 15's 74th lunar orbit[18] the engine was fired for the journey home. During the return trip Worden performed the first spacewalk in deep space. The Apollo 15 mission splashed down safely on August 7 despite the loss of one of its three parachutes.
The mission accomplished its goals but was marred by negative publicity the following year when it emerged that the crew had carried unauthorized postal covers to the lunar surface, some of which were sold by a West German stamp dealer. The members of the crew were reprimanded for poor judgment, and did not fly in space again. Apollo 15 is also remembered for the finding of the Genesis Rock, and for Scott's use of a hammer and a feather to validate Galileo's theory that absent air resistance, objects drop at the same rate.
Apollo 15 Patch and Scott, Worden, & Irwin
WHY HERE?
The center point of all the US Spaceflight caches is located in the middle of the intersection where John Glenn Drive changes into Galaxy Way in Concord, CA.
Or as we geocachers would specify it: N 37° 58.700 W 122° 03.259
The distance ranges from this point to the various caches representing the spaceflights are:
- about ¼ mile - Mercury sub-orbital missions
- about 2 miles - Mercury orbital missions
- about 5 miles - Gemini missions
- about 5 miles - Apollo Earth orbital missions
- about 25 miles - Apollo moon missions
FLIGHT SUMMARY:
| Commander:_ |
_David R. Scott |
| Command Module Pilot:_ |
_Alfred M. Worden |
| Lunar Module Pilot:_ |
_James B. Irwin |
| Launch Vehicle:_ |
_Saturn V |
| Height:_ |
_363.0 feet |
| Stages:_ |
_3 |
| Stage 1 Diameter:_ |
_33.0 feet |
| Stage 1 Thrust:_ |
_7,891,000 lbf |
| Stage 2 Diameter:_ |
_33.0 feet |
| Stage 2 Thrust:_ |
_1,155,800 lbf |
| Stage 3 Diameter:_ |
_21.7 feet |
| Stage 3 Thrust:_ |
_232,250 lbf |
| Launch Date & Time:_ |
_July 26, 1971, 13:34:00.6 UTC |
| Landing Date & Time:_ |
_July 30, 1971, 22:16:29 UTC |
| Duration:_ |
_12 days, 7 hours, 11 minutes, 53 seconds |
FTF Prize:
This is 1 of 27 caches in KCSearcher's US Spaceflight series that were given away as FTF prizes at his “Man on the Moon, July 20, 1969 - 50 years later” event. For those attendees that received this as a prize, they had an 88 hour head start on those that didn’t attend the event. The prize winners were instructed to sign the log in the “Pre-Publication FTFer(s)” space.
However, for the FTF Hounds that were not able to attend, they too had the opportunity to be FTF on this cache after publication that was targeted for 7/24/2019 @ or around 9:50 AM Pacific Time (splashdown of Apollo 11 + 50 years). All they had to do is find the cache and be first to sign in the “Post-Publication FTFer(s)” space on the log.
BONUS:
Don’t forget to record and save the Code Letter and its associated Number that is on the log sheet and inside the container lid. It will be needed to find a bonus cache on the 51st anniversary of the Moon Landing, July 20, 2020.
Please DO NOT post or include an image of the Code Letter and Number in any of your online logs for this cache
TO LEARN MORE:
Click here to see the Wikipedia description for Apollo 15.
Click here to see the Wikipedia description for Project Apollo.
Click here to see the Wikipedia description for the Space Race.