Dream Chaser mini-shuttle prepares for free flight tests
The last time a reusable space plane underwent an approach and landing test at Southern California's Edwards Air Force Base was October 26, 1977. On that day, Space Shuttle Enterprise was released from its carrier aircraft—sans tail cone—and glided to a safe landing on Runway 04.
Now, a somewhat familiar-looking black-and-white spacecraft is again roaming the runways at NASA's Dryden Flight Research Center. Sierra Nevada Corporation's Dream Chaser recently completed a series of range and taxi tow tests, in which the mini-shuttle was pulled by truck at speeds of 10, 20, 40, and finally, 60 mph, shaking down the vehicle's braking and landing systems. The tow tests pave the way for free flight approach and landing tests that could begin as early as this fall.
NASA / Ken Ulbrich
The Dream Chaser
Sierra Nevada Corporation's Dream Chaser spacecraft is readied for a tow test at NASA's Dryden Flight Research Center on Aug. 2, 2013. During the test, a truck towed the Dream Chaser to a speed of 60 mph before releasing it, allowing engineers to test the vehicle's braking and landing systems.
Dream Chaser tow testing
This NASA video shows the Dream Chaser arriving at Dryden Flight Research Center and participating in tow testing.
You may have noticed something unique about the Dream Chaser's nose landing gear: There’s no wheel and tire. The vehicle uses a skid strip, a flat, ski-like surface that extends from the spacecraft’s belly. Skid strips aren’t exactly new technology. Cape Canaveral Air Force Station has a runway nicknamed the "skid strip" in honor of a winged, pre-ICBM nuclear deterrent called the Snark, which (attempted) skid landings in the late 50s and early 60s.
SNC is one of three private companies—the others being Boeing and SpaceX—slated to provide crew transportation to the International Space Station under NASA's Commercial Crew program. The Dream Chaser launches atop an Atlas V rocket. The Atlas is not currently human-rated, but NASA and United Launch Alliance are working together under an unfunded partnership to change that (the rocket is also the launch vehicle for Boeing’s CST-100 crew capsule). After hitching a ride to space, the Dream Chaser is powered by two hybrid rocket engines based on the same technology used by SpaceShipOne and SpaceShipTwo.
Sierra Nevada Corporation
Dream Chaser docked at International Space Station
In this concept art, the Dream Chaser spacecraft is seen docked to the International Space Station. The privately-owned vehicle can transport up to seven crew members to the orbiting outpost.
Having completed two operational cargo runs to the ISS, SpaceX would appear to have an taken an early lead in the private space race. However, the Dream Chaser's Space Shuttle-like appearance is sure to turn heads when it finally takes flight. Cheryl McPhillips, the NASA liaison assigned to Sierra Nevada, said, "I look forward to seeing this bird land on the old shuttle runway this fall."