commercial aircraft
2006-10-14 06:26:35 · 18 answers · asked by rose-l 2 in Science & Mathematics ➔ Engineering
Varies depending on the aircraft - 150mph for a 737
http://www.aerospaceweb.org/question/performance/q0088.shtml
2006-10-14 06:30:24 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Fast enough to create greater lift than the downward force (see Newton's 3rd law). Both upper and lower surfaces of a wing produce lift by deflecting air downward. This propels the body upward with an opposite force. As all aircraft (even the same make of aircraft depending on what cargo it is carrying) weight varies, the speed required to create lift is different. The greater the speed the greater the airflow over the airfoil and the greater the lift force produced.
2006-10-14 08:17:12 · answer #2 · answered by sammy_v_snake 2 · 1⤊ 0⤋
what type of comercial aircraft? Compare a boeing 747-400 to a Gulfstream 45: both are commercial airlines. But its air speed that matters more, which is why aircrafts take off into the wind. Pajach?
2006-10-14 06:40:18 · answer #3 · answered by Buenovista30 1 · 1⤊ 0⤋
I think it's something to do with Lift, Drag, Thrust, Lift and Weight... the astonishingly beautifull 'Gossamer Albatross', the man powered channel crossing aircraft made of clingfilm took off at a mere 18 MPH, powered by the pedaling of Cyclist Bryan Allen.
A Boeing 747 is not in the same league, and it's takeoff speed is a little greater.
For info relating to other aircraft, follow the source link below to wikipedia.
2006-10-14 06:40:14 · answer #4 · answered by mittobridges@btinternet.com 4 · 0⤊ 0⤋
Lots of various answers here. With no head wind and depending on the type of aircraft my experience has shown me that you can get off the ground with as little as about 65 mph in something as small as a Cess. 150. Larger aircraft usually need more runway speed to get airborn. Getting off the ground and actually being able to climb above a certain low level altitude (up to about the limits of what is called "ground effect") requires more speed.
Course then you have ultralites which can lift off as low as 35 mph and they are aircraft.
There are rate climb speeds for different aircraft known as VX and VY which give you the best rate of climb in the shortest over the ground distance once you are off the ground. They require that you maintain a certain speed with full open throttle that will give you an optimum rate of climb/angle of attack to arrive at alttitude most effeciently/safely without experiencing stahling.
2006-10-14 06:44:28 · answer #5 · answered by Anonymous · 1⤊ 0⤋
It depends on the weight to wing-surface ratio, and the wing cross-section. Ancient commercial aircraft could take off at much slower speeds than todays machines.
2006-10-14 06:48:27 · answer #6 · answered by Aspphire 3 · 0⤊ 0⤋
A helicopter is an aircraft and the take off speed is zero
2006-10-17 06:09:49 · answer #7 · answered by bwadsp 5 · 0⤊ 0⤋
On average, Concord had to be travelling at 250mph to take off, but this depends on the weight of the aircraft. Concord has a max take off weight of 408,000 lbs (185,000 kgs). Other aircraft weights and speeds may vary.
2006-10-14 06:49:15 · answer #8 · answered by Anonymous · 0⤊ 0⤋
A little Cesna I have flown in the take off speed is about
80-90 knotts, but the Beachcraft I have flown is about 115 knotts.
The important number is the air speed, not the ground speed.
2006-10-14 06:34:11 · answer #9 · answered by Kevin 2 · 0⤊ 0⤋
assume you mean air apeed? Depends on aerodynamics, weight, etc but as low as 40mph for a microlight to 185 for a 747. Even for a helicopter, the air speed of the blades is substantial in order for it to get airborne.
2006-10-17 14:08:12 · answer #10 · answered by frednuff 2 · 0⤊ 0⤋