Mercury 9

Crew

• Gordon Cooper (flew on Mercury 9 & Gemini 5)

Backup Crew

• Alan B. Shepard

Mission Parameters

• Mass: 1,360.8 kg
• Perigee: 161 km
• Apogee: 267 km
• Inclination: 32.5°
• Period: 88.5 min

See also

• Splashdown

Mission Highlights

Mercury 9 was the last U.S. Mercury spaceflight manned space mission, launched on May 15, 1963 from Launch Complex 14 at Cape Canaveral, Florida. The capsule was named Faith 7 and it completed 22 Earth orbits piloted by astronaut Gordon Cooper. The Atlas rocket was #130-D, and the Mercury spacecraft was #20.

The flight of Sigma 7 had been so nearly perfect that some at NASA thought America should quit while it was ahead and make MA-8 the last Mercury mission, and not risk the chance of future disaster. They thought NASA had pushed the first-generation Mercury hardware far enough, and taking more chances on another longer mission were not warranted. They thought it was time to move on to the Gemini program.

Manned Spacecraft Center officials, however, believed that the Mercury team should be given the chance to test man in space for a full day. In September, 1962, NASA concluded negotiations with McDonnell to modify four Mercury spacecraft (#12, #15, #17 and #20) to a configuration that supported a one-day mission.

In November, 1962, Gordon Cooper was chosen to pilot the MA-9 mission and Alan Shepard was picked as backup.

On April 22, 1963 Atlas 130-D and Faith 7 - S/C #20 were stacked on the launch pad at Launch Complex 14.

Because MA-9 would orbit over nearly every part of the world from 32.5 degrees north to 32.5 degrees south, a total of 28 ships, 171 aircraft, and 18,000 servicemen were assigned to support the mission.

When Cooper boarded Faith 7 at 6:36 am on the morning of May 14, he found a little gift that had been left for him. Alan Shepard had left behind a "plumbers helper" (suction-cup handled device that unclogs drains) as a joke. Instructions on the handle said, "Remove Before Launch". The gift didn't make the trip. Neither did Cooper that day. Various problems with radar in Bermuda and the diesel engine that rolls back the gantry caused the launch to be cancelled until May 15.

At 8:00:13, May 15, 1963, Faith 7 was launched from Launch Complex 14. At T+ 60-seconds, the Atlas started its pitch program. Shortly afterward, MA-9 passed through Max-Q. At T+ 2-minutes and 14-seconds Cooper felt BECO (Booster Engine Cutoff) and staging. The two Atlas booster engines had been left behind. The Launch Escape Tower was then jettisoned. At T+ 3-minutes the cabin pressure sealed at 5.5 lb/in² (38 kPa). Cooper reported, "Faith 7 is all go."

At about T+ 5-minutes was SECO (Sustainer Engine Cutoff) and Faith 7 entered orbit at 17,547 mile/h (7,844 m/s). After the spacecraft separated and turned around to orbit attitude, Cooper watched his Atlas booster lag behind and tumble for about eight minutes. Over Zanzibar on the first orbit, he learned that the orbital parameters were good enough for at least 20 orbits. As the spacecraft passed over Guaymas, Mexico still on the first orbit, capsule communicator Gus Grissom told Cooper the ground computers said he was "go for seven orbits".

At the start of the third orbit, Cooper checked his list of 11 experiments that were on his schedule. He got ready to eject a six inch (152 mm) diameter sphere, equipped with xenon strobe lights from the nose of the spacecraft. This experiment was designed to test his ability to spot and track a flashing beacon in orbit. At T+ 3-hours 25-minutes Cooper flipped the switch and heard and felt the beacon leave the spacecraft. He tried to see the flashing light in the approaching dusk and on the nightside pass, but failed to do so. On the fourth orbit, he did spot the beacon and saw it pulsing. Cooper reported to Scott Carpenter on Kauai, Hawaii, "I was with the little rascal all night." He also spotted the beacon on his fifth and sixth orbits.

Also on the sixth orbit, at about T+ 9-hours, Cooper set up cameras, adjusted the spacecraft attitude and set switches to deploy a tethered balloon from the nose of the spacecraft. It was a 30 inch (762 mm) Mylar® balloon painted fluorescent orange, inflated with nitrogen and attached to a 100 ft (30 m) nylon line from the antenna canister. A strain gauge in the antenna canister would measure differences in atmospheric drag between the 100 mile (160 km) perigee and the 160 mile (260 km) apogee. Cooper tried several times to eject the balloon, but it failed to eject.

Cooper passed Schirra's orbital record on the seventh orbit while he was engaged in radiation experiments. After T+ 10-hours Zanzibar told Cooper the flight was go for 17 orbits. Cooper was orbiting the earth every 88-minutes 45-seconds at an inclination of 32.55 degrees to the equator.

His scheduled rest period was during orbits 9 through 13. He had a dinner of powdered roast beef mush and some water, took pictures of Asia and reported the spacecraft condition. Cooper was not sleepy and during orbit 9 took some of the best photos made during his flight. He took pictures of the Tibetan highlands and of the Himalayas.

Picture of Tibet taken by Cooper

He said he could see roads, rivers, small villages, and even individual houses if the lighting and background conditions were right. Cooper slept intermittently the next six hours, during orbits 10 through 13. He woke from time to time and took more pictures, taped status reports and kept adjusting his spacesuit temperature control which kept getting too hot or too cold.

On his fourteenth orbit, Cooper took an assessment of the spacecraft condition. The oxygen supply was sufficient. The peroxide fuel for attitude control was 69 percent in the automatic tank and 95 percent in the manual one. On the fifteenth orbit he spent most of the time calibrating equipment and synchronizing clocks.

When he entered night on the sixteenth orbit, Cooper pitched the spacecraft to slowly follow the plane of the ecliptic. Through the spacecraft window he viewed the zodiacal light and night airglow layer. He took pictures of these two "dim light" phenomena from Zanzibar, across the earths nightside, to Canton Island. The pictures were later found to have been overexposed, but they still contained valuable data.

At the start of the 17th orbit while crossing Cape Canaveral, Florida, Cooper broadcast slow scan black and white television pictures to the ground. The picture showed a ghostly image of the astronaut. In the murky picture, a helmet and hoses could be seen, it was the first time an American astronaut had sent back television from space.

On the 17th and 18th orbits he took infrared weather photos and moonset Earth-limb pictures. He also resumed geiger counter measurements of radiation. He sang during orbits 18 and 19, and marveled at the greenery of Earth. It was nearing T+ 30-hours since liftoff.

On the nineteenth orbit, the first sign of trouble appeared when the spacecraft 0.05 g (0.5 m/s²) light came on. The spacecraft was not reentering, it was a faulty indicator. On the 20th orbit, Cooper lost all attitude readings. The 21st orbit saw a short-circuit occur in the bus bar serving the 250 volt main inverter. This left the automatic stabilization and control system without electric power.

On the 21st orbit John Glenn onboard the Coastal Sentry near Kyushu, Japan, helped Cooper prepare a revised checklist for retrofire. Due to the system malfunctions, many of the steps would have to be done manually. Only Hawaii and Zanzibar were in radio range on this last orbit, but communications were good. Cooper noted that the carbon dioxide level was rising in the cabin and in his spacesuit. He told Carpenter as he passed over Zanzibar, "Things are beginning to stack up a little." Throughout the problems, Cooper remained cool, calm and collected.

At the end of the 21st orbit, Cooper again contacted Glenn on the Coastal Sentry. He reported the spacecraft was in retro attitude and holding manually. The checklist was complete. Glenn gave a 10 second countdown to retrofire. Cooper kept the spacecraft aligned at a 34 degree pitchdown angle and manually fired the retrorockets on "Mark!".

Fifteen minutes later the Faith 7 landed just four miles (6 km) from the prime recovery ship, the carrier USS Kearsarge. The landing spot was just 130 km south east of Midway Island, in the Pacific Ocean. This is south west of Pearl and Hermes Reef. According to NASA SP-45 "Mercury Project Summary Including Results of the Fourth Manned Orbital Flight", Faith 7 landed 70 nautical miles (130-km) South East of Midway Island. This would be near Template:Coor dm.

Splashdown was at T+ 34-hours 19-minutes 49-seconds after liftoff. The spacecraft tipped over in the water momentarily, then righted itself. Helicopters dropped rescue swimmers and relayed Cooper's request of an Air Force officer, for permission to be hoisted aboard the Navy's carrier. Permission was granted, 40 minutes later the explosive hatch blew open on the deck of the Kearsarge. Cooper stepped out of the Faith 7 to a warm greeting.

Again at the end of the MA-9 mission, there was another debate to fly one more Mercury flight, Mercury-Atlas 10 (MA-10). It was proposed as a 3 day, 48 orbit mission to be flown by Alan Shepard in October, 1963. In the end, NASA officials decided it was time to move on to Project Gemini and MA-10 never flew.

The Mercury program had fulfilled all of its goals.

Mercury spacecraft # 20 - Faith 7, used in the Mercury-Atlas 9 mission, is currently displayed at the NASA Space Center Houston, Houston, TX. Mercury spacecraft #20 Faith 7 display page on A Field Guide to American Spacecraft website. (http://aesp.nasa.okstate.edu/fieldguide/pages/mercury/ma-9.html)

Reference

• This New Ocean: A History of Project Mercury - NASA SP-4201 (http://www.hq.nasa.gov/office/pao/History/SP-4201/cover.htm)
• NASA NSSDC Master Catalog (http://nssdc.gsfc.nasa.gov/nmc/sc-query.html)

de:Mercury-Atlas_9 nl:Mercury MA-9

External link

• Field Guide to American Spacecraft (http://aesp.nasa.okstate.edu/fieldguide/pages/mercury/ma-9.html) Pictures of Faith 7 at the Johnson Space Center, TX museum.

pt:Faith 7