![]() |
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#17
|
|||
|
|||
![]()
The 25 has an "interesting" "gearbox" for the control surfaces on the
wings from negative flap to flap 4 the trailing edge moves in a fairly uniform way (all 3 trailing edge controls per wing) so coming in, in full negative to do a "beat up" the wing bends up quite impressively. As you slow down and find yourself underbraking due to the pitiful brakes and go to flap L All bets are off on the trailing edges, the inboard "flaps" come down almost vertically to act as brakes, the mid wing control surface comes down a little to act as flap and the outboard ailerons get kicked up to act like spoilerons (still work as ailerons but almost zero positive effect) The RC guys use the same effect and call it "Crow" braking (as it mimics a crow coming in to land hot) An underbraked approach into a short field has a 25 going from wings point up to wings point down, quite entertaining. There is a dodge used by 25 pilots to stop a bounced landing of having P2 ready on the flaps and as the main gear touches, go from flap 4 (recomended landing flap) to full negative flap. It does stop a bounce, but can end up belting the tail off the deck quite positively. Alternate bounce prevention is to "fly it on" and have the wheelbrake applied a bit, that pitches the nose forward as the wheel bites thus "sticking" the glider (which has an effective enough pitch stability to avoid touching the nose (usually, YMMV) Alternatively, you can land it properly with a fully held off landing . . rarely managed any of those . . Complete sidetrack, aplogies, Miss the old 25 sometimes. Not times that involve rigging, ground handling, flying fast or thermalling . . but sometimes . . |
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
787 wing flex | Kingfish | Piloting | 13 | November 8th 07 02:53 PM |
Speed wing extensions | [email protected] | Home Built | 0 | July 10th 07 03:06 PM |
Glider Weight/Wing Loading and determing speed for best L/D for a given weight | 65E | Soaring | 3 | January 26th 06 09:26 PM |
Sporty's Flex Light | Kobra | Piloting | 0 | September 8th 04 10:32 PM |
Why are delta wing designs reputed to lose speed during turns? | Air Force Jayhawk | Military Aviation | 2 | September 25th 03 12:50 PM |