Nation/World

Air Force launching robotic space plane

The Air Force is preparing to launch the robotic X-37B spacecraft to perform unspecified technology tests in orbit and then autonomously glide to a landing.  (Associated Press)
The Air Force is preparing to launch the robotic X-37B spacecraft to perform unspecified technology tests in orbit and then autonomously glide to a landing. (Associated Press)

X-37B will orbit Earth, land autonomously

LOS ANGELES – After a decade of development, the Air Force this month plans to launch a robotic spacecraft resembling a small space shuttle to conduct technology tests in orbit and then glide home to a California runway.

The ultimate purpose of the X-37B Orbital Test Vehicle and details about the craft, which has been passed between several government agencies, however, remain a mystery as it is prepared for launch April 19 from Cape Canaveral, Fla.

The quietly scheduled launch culminates the project’s long and expensive journey from NASA to the Pentagon’s research and development arm and then to a secretive Air Force unit.

Hundreds of millions of dollars have been spent on the X-37 program, but the current total has not been released.

The launch date, landing sites and a fact sheet were released by Air Force spokeswoman Maj. Angie I. Blair. She said more information would be released soon, but questions on cost and other matters submitted by e-mail weren’t answered by Friday.

While the massive space shuttles have been likened to cargo-hauling trucks, the X-37B is more like a sports car, with the equivalent trunk capacity.

Built by Boeing Co.’s Phantom Works, the 11,000-pound craft is 9 1/2 feet tall and just over 29 feet long, with a wingspan of less than 15 feet. It has two angled tail fins rather than a single vertical stabilizer.

Unlike the shuttle, it will be launched like a satellite, housed in a fairing atop an expendable Atlas V rocket, and deploy solar panels to provide electrical power in orbit.

The Air Force released only a general description of the mission objectives: testing of guidance, navigation, control, thermal protection and autonomous operation in orbit, re-entry and landing.

The significance of the X-37B is unclear because the program has been around for so long, said Peter A. Wilson, a senior defense research analyst for the RAND Corp. who several years ago served as executive director of a congressional panel that evaluated national security space launch requirements.

“From my perspective it’s a little puzzling as to whether this is the beginning of a program or the end of one,” Wilson said Friday in a telephone interview from Washington, D.C.

As NASA anticipated the end of the shuttle, the X-37B was viewed as a working prototype of the next-generation design of a fully reusable spacecraft, but the space agency lost interest and the Air Force picked it up, Wilson said.

“It’s viewed as a prototype of a vehicle that could carry small payloads into orbit, carry out a variety of military missions and then return to Earth,” he said.

The Air Force statement said the X-37 program is being used “to continue full-scale development” and orbital testing of a long-duration, reusable space vehicle.

Wilson sees the upcoming launch as “a one-shot deal.”

He acknowledged that he does not know if there is a classified portion of the program but said there is no evidence of a second vehicle being built to follow the prototype.

To fully function as a completely reusable launch system there would also have to be development of a booster rocket that is capable of landing itself back on Earth to be reassembled with the spacecraft, according to Wilson, who does not see any support for such an initiative.



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