If the engine(s) fail and autorotation is used to control the decent would the rotor have to change direction of rotation?
2007-07-20 12:31:37 · 4 answers · asked by Hopps T 1 in Science & Mathematics ➔ Physics
No. The autorotation still takes advantage of the leading-trailing blade surfaces to provide lift. Thus, it must be turning the same way.
Horizontal speed maintains the autorotation function. Tilt the nose down, then flare just before you land.
2007-07-20 12:37:19 · answer #1 · answered by science_joe_2000 4 · 0⤊ 0⤋
Compared to the alternative, you bet it does! Basically, auto-rotation is the way a Helicopter glides. It is best done with forward motion, because that gives the best airflow over the rotor and you land in some ways like an airplane, running the machine onto the ground on its skids. Without auto-rotation the helicopter would drop like a stone, you are unlikely to survive that from much above 20 feet. It is why we are in a hurry to get some speed and height after take off, there is an avoid zone where you don't have the height or speed to autorotate, close to the ground, at low speed. Not a nice place to be!
2016-05-18 22:32:28 · answer #2 · answered by ? 3 · 0⤊ 0⤋
No. Wikipedia has a very intereting article on autorotation:
http://en.wikipedia.org/wiki/Autorotation
2007-07-20 12:54:35 · answer #3 · answered by Helmut 7 · 0⤊ 0⤋
Thanks for your advice, to answer your question my sprint is the same as a Geo Metro and Suzuki Swift
2007-07-20 13:00:10 · answer #4 · answered by high.gremlin 1 · 0⤊ 1⤋