(See How Airplanes Work to find out how lift is generated.) The main rotor, attached to the top of the helicopter, spins four 20-foot (6-meter) blades. The pilot maneuvers the helicopter by adjusting a swash plate mechanism. The swash plate changes each blade's pitch (tilt) to ...
Today, materials scientists are discovering properties for which we have yet to find uses. With luck, they'll fare better than Lorin. Related Articles Could you commute from New York to Los Angeles in 12 minutes? How Air-breathing Rockets Will Work How do they start jet engines on airplanes...
The two programs have many things in common: Both programs provide an excuse for more US debt; they provide many jobs for researchers; and the devices that they relate to can be purchased in fairly small increments. But the cost per kilowatt-hour of electricity is likely to be high with e...
In fact, diesel locomotives have their very own article — How Diesel Locomotives Work. Many trains intersperse multiple locomotives throughout their lineup to increase and distribute the power. Besides steam- and diesel-powered locomotives, many modern trains operate solely on electrical power. ...
However, people rarely drink that much, that fast. Those who do are probably engaging in many other reckless behaviors, too, that will kill them long before the alcohol does. The big question is, what about the millions of people who do not drink themselves into oblivion, but just into a...
Parkinson:They wanted airplanes, not satellites. It cost a lot of money, and they couldn't envision what precision would do for them. Even after we ran the tests and met every single one, the Air Force still tried to cancel the whole thing. Of course, now the Air Force fully embraces...
That's why fast-moving things—jet airplanes, high-speed trains, space rockets... and even leaping salmon—tend to be long, thin, and tube-shaped, compared to slower-moving things like boats and trucks, which are less affected by drag....
Parkinson:They wanted airplanes, not satellites. It cost a lot of money, and they couldn't envision what precision would do for them. Even after we ran the tests and met every single one, the Air Force still tried to cancel the whole thing. Of course, now the Air Force fully embraces...
12. Supersonic airplanes have a lot of advantages EXCEPT ___. A.they are quieter than usual planesB.for making the flight more stable C.they are faster than usual planesD.they are not as safe as usual planes 13. With a supersonic airplane, it will take you ___ to fly from Beijing...
Nevada facility—but also the town of Mojave, home of Burt Rutan’s Scaled Composites company. If most airplanes evolve by natural means, then Rutan is aviation’s Dr. Frankenstein, fashioning strange asymmetric creatures (Boomerang) and others with so many arms and legs you lose count (Proteus...