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Do those big planes take off with flaps? I didn't know that, so went with landing.
by logingone 10y ago
Do those big planes take off with flaps? I didn't know that, so went with landing.
- danaliv 10y agoYes, the 747 (which this aircraft is based on) generally takes off with flaps 10° or 20° depending on load, runway conditions, temperature, etc. Landing flaps are 25° or 30°.
- sokoloff 10y agoYes, flaps are routinely partially deployed for normal takeoffs. On the 747, there are leading edge flaps in addition to the "normal" trailing edge flaps.
- FabHK 10y agoOn the leading edge, they're called "slats" [1]. Most passenger jets have them, and they're rather important for take-off: The first fatal 747 crash, a Lufthansa machine departing Nairobi, came down because the slats were not deployed [2]. [1] https://en.wikipedia.org/wiki/Leading-edge_slats https://en.wikipedia.org/wiki/Leading-edge_slats [2] https://en.wikipedia.org/wiki/Lufthansa_Flight_540 https://en.wikipedia.org/wiki/Lufthansa_Flight_540
- sokoloff 10y agoYou're correct on most airliners, but not the 747 (on which the VC-25 is based). A 747 has Kreuger flaps [1] between fuselage and inner engines and 'variable camber leading edge flaps' on the rest of the wing. [0] - https://en.wikipedia.org/wiki/High-lift_device https://en.wikipedia.org/wiki/High-lift_device [1] - https://en.wikipedia.org/wiki/Krueger_flap https://en.wikipedia.org/wiki/Krueger_flap
- FabHK 10y agoAwesome, thanks. Nice illustration as to the differences in the Wikipedia article. The LH crash Wikipedia article seems inaccurate, then. Edit: put a note in the Wikipedia article.
- Nition 10y agoYeah, flaps decrease speed but also increase lift, so they're good for both takeoff and landing.