One of the latest ideas under serious consideration by airlines to save money is electrical drive systems mounted on the landing gear that allow airliners to taxi without running the engines. The auxiliary power unit is used instead to run an electric motor mounted on the undercarriage, which in turn rotates the wheel.
AgustaWestland expects its new AW189 twin helicopter—a civilian stretch of the military AW149—will tap into a broad market, ranging from offshore support, search-and-rescue and other parapublic uses to passenger transport. AgustaWestland CEO Bruno Spagnolini unveiled a mockup of the new AW189 twin helicopter during the recent Paris air show.
"These finding have implications for planetary protection policies for future landed spacecraft," according to the Nature Geoscience report. "Cl-bearing brines are very corrosive and this may have implications on spacecraft design and surface operations."...More
The flight of Apollo 13 in April 1970 was one of the most dramatic events in the history of human spaceflight –- and ultimately one of NASA’s finest hours. For three days, the lives of three astronauts who had been bound for the third lunar landing mission hung in the balance....More
The space shuttle was a magnificent machine, the most capable spaceship ever built. It was also a fragile monster that required an expensive standing army to fly, and punished the slightest inattention to detail in its preparation and operation with fatal results....More