wiki上有，是说阿波罗登陆的胶带，和蓝图丢失


Missing data
Blueprints and design and development drawings of the machines involved are missing.[119][120] Apollo 11 data tapes containing telemetry and the high-quality video (before scan conversion from slow-scan TV to standard TV) of the first moonwalk are also missing.[121][122]

Tapes
Main article: Apollo 11 missing tapes

Photo of the high-quality SSTV image before the scan conversion

Photo of the degraded image after the SSTV scan conversion
Dr. David R. Williams (NASA archivist at Goddard Space Flight Center) and Apollo 11 flight director Eugene F. Kranz both acknowledged that the original high-quality Apollo 11 telemetry data tapes are missing. Conspiracists see this as evidence that they never existed.[121] The Apollo 11 telemetry tapes were different from the telemetry tapes of the other Moon landings because they contained the raw television broadcast. For technical reasons, the Apollo 11 lander carried a slow-scan television (SSTV) camera (see Apollo TV camera). To broadcast the pictures to regular television, a scan conversion had to be done. The radio telescope at Parkes Observatory in Australia was able to receive the telemetry from the Moon at the time of the Apollo 11 moonwalk.[117] Parkes had a bigger antenna than NASA's antenna in Australia at the Honeysuckle Creek Tracking Station, so it received a better picture. It also received a better picture than NASA's antenna at Goldstone Deep Space Communications Complex. This direct TV signal, along with telemetry data, was recorded onto one-inch fourteen-track analog tape at Parkes. The original SSTV transmission had better detail and contrast than the scan-converted pictures, and it is this original tape that is missing.[123] A crude, real-time scan conversion of the SSTV signal was done in Australia before it was broadcast worldwide. However, still photos of the original SSTV image are available (see photos). About fifteen minutes of it were filmed by an amateur 8 mm film camera and these are also available. Later Apollo missions did not use SSTV. At least some of the telemetry tapes from the ALSEP scientific experiments left on the Moon (which ran until 1977) still exist, according to Dr. Williams. Copies of those tapes have been found.[124]

Others are looking for the missing telemetry tapes for different reasons. The tapes contain the original and highest quality video feed from the Apollo 11 landing. Some former Apollo personnel want to find the tapes for posterity while NASA engineers looking towards future Moon missions believe the tapes may be useful for their design studies. They have found that the Apollo 11 tapes were sent for storage at the U.S. National Archives in 1970, but by 1984, all the Apollo 11 tapes had been returned to the Goddard Space Flight Center at their request. The tapes are believed to have been stored rather than re-used.[125] Goddard was storing 35,000 new tapes per year in 1967,[126] even before the Moon landings.

In November 2006, COSMOS Online reported that about 100 data tapes recorded in Australia during the Apollo 11 mission had been found in a small marine science laboratory in the main physics building at the Curtin University of Technology in Perth, Australia. One of the old tapes has been sent to NASA for analysis. The slow-scan television images were not on the tape.[124]

In July 2009, NASA indicated that it must have erased the original Apollo 11 Moon footage years ago so that it could re-use the tape. In December 2009 NASA issued a final report on the Apollo 11 telemetry tapes.[127] Senior engineer Dick Nafzger, who was in charge of the live TV recordings during the Apollo missions, was put in charge of the restoration project. After a three-year search, the "inescapable conclusion" was that about 45 tapes (estimated 15 tapes recorded at each of the three tracking stations) of Apollo 11 video were erased and re-used, said Nafzger.[128] In time for the 40th anniversary of the Apollo 11 landing, Lowry Digital had been tasked with restoring the surviving footage. Lowry Digital president Mike Inchalik said that "this is by far and away the lowest quality" video the company has dealt with. Nafzger praised Lowry for restoring "crispness" to the Apollo video, which will remain in black and white and contains conservative digital enhancements. The US$230,000 restoration project took months to complete and did not include sound quality improvements. Some selections of restored footage in high definition have been made available on the NASA website.[129]

Blueprints

Lunar Roving Vehicle flown on Apollo 15
Grumman appears to have destroyed most of its LM documentation,[120][130] but copies of the blueprints for the Saturn V exist on microfilm.[131]

Four mission-worthy Lunar Roving Vehicles (LRV) were built by Boeing.[132] Three of them were carried to the Moon on Apollos 15, 16, and 17, used by the astronauts for transportation once on the Moon, and left there. After Apollo 18 was canceled, the other LRV was used for spare parts for the Apollos 15 to 17 missions. The 221-page operation manual for the LRV contains some detailed drawings,[133] although not the blueprints.


【 在 oldyoung1019 的大作中提到: 】
: 请给出“图纸丢了”这件事的根据
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FROM 121.69.62.*