It was 30 years ago this week that NASA ushered in a new era of spaceflight with the inaugural launch of space shuttle Columbia on April 12, 1981, setting the pace for three decades of monumental leaps in environmental and space science achievements.
Thirty years and 133 missions later, NASA is winding down the space shuttle program, with the three remaining shuttle orbiters and the prototype shuttle Enterprise slated to be enshrined at several museums around the country after the last two missions, STS-134 and STS-135, are flown.
With triumph came tragedy, however, with the loss of two shuttles and their crews, Challenger upon launch in 1986, and Columbia upon return in 2003.
After more than two years of checkout of Columbia following its delivery to NASA in 1979 and years of training by astronauts in shuttle simulators, the program kicked off with the successful launch of Columbia on mission STS-1. Columbia was boosted into orbit by seven million pounds of thrust supplied by its solid-propellant rockets and liquid-hydrogen engines. The flight, the first of four orbital flight tests of Columbia, served as a two-day demonstration of the first reusable, piloted spacecraft's ability to go into orbit and return safely to Earth.
The launch coincided with the 20th anniversary of the first human spaceflight, that of Russian cosmonaut Yuri Gagarin in the Vostok 1 capsule on April 12, 1961.
That first operational test flight from Launch Pad 39A at the Kennedy Space Center in Florida carried Commander John Young and Pilot Robert Crippen into orbit.
The early flights helped NASA build on its knowledge of the vehicle and its capabilities. On its first mission, Columbia carried as its main payload a Developmental Flight Instrumentation pallet with instruments to record pressures, temperatures, and levels of acceleration at various points on the vehicle during launch, flight, and landing. In flight, Young and Crippen tested the spacecraft's on-board systems, fired the orbital maneuvering system for changing orbits, employed the reaction control system for controlling attitude, and opened and closed the payload doors.
One of many cameras aboard--a remote television camera--revealed some of the thermal protection tiles had disengaged during launch. As Columbia re-entered the atmosphere from space at Mach 24 (24 times the speed of sound) after 36 orbits, aerodynamic heating built up to over 3,000 degrees Fahrenheit, causing some concern during the time when the shuttle was out of radio communications with ground stations. But at 188,000 feet and Mach 10, Young and Crippen reported that the orbiter was performing as expected. After a series of maneuvers to reduce speed, the mission commander and pilot prepared to land.
"We learned that humans in space are very adaptable and capable. And we also learned that the vehicle required a lot of care and was not forgiving of mistakes," Crippen said.
Postscript – STS-1 astronaut Bob Crippen was the honored guest at a 30th anniversary celebration of that first space shuttle mission at the Kennedy Space Center on April 12, 2011, and is scheduled to speak at a formal dinner program in Lancaster, Calif., the evening of April 15, 2011. For further information, contact the Antelope Valley Board of Trade at 661-942-9581 or e-mail teri@avbot.org.
Alan Brown
NASA Dryden Flight Research Center
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