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A prototype of the Preliminary Research Aerodynamic Design to Land on Mars, or Prandtl-m, is planned to be ready for launch from a high altitude balloon later this year; it will be released at about 100,000 feet altitude, which will simulate the flight conditions of the Martian atmosphere, said Al Bowers, NASA Armstrong chief scientist and Prandtl-m program manager.
“The aircraft would be part of the ballast that would be ejected from the aeroshell that takes the Mars rover to the planet,” Bowers said.” It would be able to deploy and fly in the Martian atmosphere and glide down and land. The Prandtl-m could overfly some of the proposed landing sites for a future astronaut mission and send back to Earth very detailed high resolution photographic map images that could tell scientists about the suitability of those landing sites.”
“It would have a flight time of right around 10 minutes. The aircraft would be gliding for the last 2,000 feet to the surface of Mars and have a range of about 20 miles,” Bowers said. Before that happens, a configuration will be developed for the first of three tests here on Earth.
“The actual aircraft’s wingspan when it is deployed would measure 24 inches and weigh less than a pound,” Bowers said. “With Mars gravity 38 percent of what it is on Earth, that actually allows us up to 2.6 pounds and the vehicle will still weigh only 1 pound on Mars. It will be made of composite material, either fibreglass or carbon fibre. We believe this particular design could best recover from the unusual conditions of an ejection.”
Success could lead to a third mission that is already being discussed because the Flight Opportunities Program has access to a sounding rocket capable of going to very high altitudes, Bowers said.
Illustration provided by NASA.
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