Cdfmxtech From United States of America, joined Jul 2000, 1335 posts, RR: 34 Reply 1, posted (10 years 11 months 1 week 2 days 16 hours ago) and read 3013 times:
Detent positions are as follows:
Up - 0 - 15 - 22 - 35 - 50
There is a Flap TO select wheel where the degrees can be modified btwn 1 and 25.
Mr Spaceman From Canada, joined Mar 2001, 2777 posts, RR: 18 Reply 4, posted (10 years 11 months 1 week 2 days 13 hours ago) and read 2975 times:
Hi Kalle. Well, it would make sense to me if what you think Up means is true.
Up = The whole wing is clean. Both leading edge slats and trailing edge flaps are retracted.
Although, I'm sure I've read about and seen pictures of aircraft that have flaps that "split" on touchdown, with the upper surface of the flap acting like an airbrake. This might only have been military aircraft I'm thinking of though.
I have seen fighter jets that have their ailerons and rudder "split" after touchdown to create drag (some do this while still airborne, especially when landing on a carrier). Even the Space Shuttle has this feature.
We are talking about a DC-10-30 however, so hopefully Cdfmxtech will shed some light on the Up position.
FBU 4EVER! From Norway, joined Jan 2001, 998 posts, RR: 8 Reply 5, posted (10 years 11 months 1 week 2 days 12 hours ago) and read 2967 times:
Hyvä,Kalle!
You're right.Called my dad who flew DC-10's until some 10 years ago,and he confirms the flap positions mentioned in an earlier reply,also your explanation of the UP and Flap 0 positions.This is (was) Douglas's way of naming the flap positions,also used on DC-9's,MD-80's and MD-90's.
FDXmech From United States of America, joined Mar 2000, 3251 posts, RR: 44 Reply 6, posted (10 years 11 months 1 week 1 day 16 hours ago) and read 2953 times:
The "clean wing" is referred to as the "UP/RETRACT" detent meaning "FLAPS UP"
and"SLATS RETRACTED" configuration.
The next detent is "0/TO EXTEND" meaning FLAPS "0"deg and SLATS in Takeoff configuration. Slats in T/O config. are partially extended or in the "mid sealed" position.
Further down, the flap/slat handle enters the 35/LAND detent. The slats will fully extend to the LAND config.
The difference between FLAPS UP and FLAPS 0 is in "UP", the flaps are against its structural upstop while in "0", the flaps are slightly down (not against upstop) but essentially still up (confused? Me too).
The "split flaps" during touchdown are the GROUND SPOILERS extending.
DC-10Tech From United States of America, joined Jun 2001, 298 posts, RR: 3 Reply 7, posted (10 years 11 months 1 week 1 day 14 hours ago) and read 2949 times:
Flaps in the 50/Land position will definately give you a speed brake-type action while enhancing lift. (While convential speed brakes spoil some of the lift) Just the other day I had to taxi a DC-10-30 with the flaps set at 50, and because the inboard flaps cover a large area of the engine exhaust path, I had to use a lot of thrust to get the aircraft moving. It felt as if the wheel brakes were dragging, but it was the flaps catching the jet blast.
Cdfmxtech From United States of America, joined Jul 2000, 1335 posts, RR: 34 Reply 8, posted (10 years 11 months 1 week 1 day 10 hours ago) and read 2942 times:
FDXmech explained it right. Sorry, wasn't able to get back to my PC. Up is fully retracted.
Duce50Boom From , joined Dec 1969, posts, RR: Reply 10, posted (10 years 11 months 1 week 1 day 6 hours ago) and read 2939 times:
fixed flap positions are; 0, 15, 22, 35, and 50. you can also select any between 0 and 25 by using the flap takeoff selector wheel. slats can be retracted or extended in the takeoff or landing configuration. the flap and slat handles are connected, so unless you un-couple the interlock between the two; when you lower the flaps, if the slats aren't already out, they're coming out.
normal landing flap/ slat setting is 35-35/ land. you can also use 50-50/ land, but it's not used nearly as often.
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