![]() |
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 |
#18
|
|||
|
|||
![]()
I thought that was exactly the point I was trying to
make! Stick position is type dependent. Where you hold the stick and how much you have to pull back, or push forward, may be different to what you are used to, if you fly a different type of glider. It depends on the hook position, the exact c of g and centre of pressure, and the trim position. The advice I gave was to hold the stick in a position that gives the optimum angle of climb for your type of winch. Full stop, period! Real life winch launching takes place using different types of gliders in differing wind strengths. No one throttle setting can cover all cases. If you launched a slow glider (e.g. a K8) into a 45 knot headwind, you could stop the winch altogether once it has got airborne and allow it to launch like a kite. The wind would be providing the energy while the winch would just act as an anchor point on the ground. Conversely launching a heavy two seater on a still day with a moderately powerful winch might require absolutely full throttle. Derek Copeland At 18:12 16 December 2006, Ian wrote: Dan G wrote: Ian wrote: And that was a surprise? Find yourself another club, man, because if headwinds on a winch launch are unexpected your current lot are going to damage someone one day. Easy now, my club has a long safety record any would be proud of. AFAIK there's never been a winch launch accident. In that particular example there was a very strong wind gradient. I was using as an illustration of the belief that K21s can take everything the winch gives. I am glad to hear about the safety record. I only hope they can keep it. No. I think it's bad advice. Yes, you should aim to have a proper climb angle and air speed, but the stick position is irrelevant. Just use enough to do what's needed. Well, 'find what stick position will hold them at about 45 degrees to the horizon AND give a safe speed' and 'you should aim to have a proper climb angle and air speed' seems to be the same thing... No, they are completely different. Stick position is irrelevant. All that matters is whether you need to move it. Let me give a simple example. The exact position of the temperature lever on a shower doesn't matter, does it? If it's too hot you move it 'cold' a bit and if it's too cold you move it 'hot' a bit. You don't say 'I'll have a position 5 shower, no matter how hot that is'. Same with the stick. Ian |
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Winch Launch Extreme 5200 ft | Walter Kronester | Soaring | 57 | December 14th 06 04:55 AM |
Winch operations | Edward Winchester | Soaring | 7 | April 13th 06 11:24 AM |
UAV's and TFR's along the Mexico boarder | John Doe | Piloting | 145 | March 31st 06 06:58 PM |
LIppmann reports a 950 meter winch launch with their Dynatec winch line - anything higher? | Bill Daniels | Soaring | 20 | December 27th 04 12:33 AM |
I need winch launch videos | Bill Daniels | Soaring | 21 | December 1st 04 06:41 PM |