Just got John Derstine's answer; it seems to answer the rest of my questions.
Thanks all, Stefan. > -----Oorspronkelijk bericht----- > Van: John Derstine [mailto:[EMAIL PROTECTED]] > Verzonden: zondag 28 oktober 2001 13:46 > Aan: Stefan Smets; [EMAIL PROTECTED]; Soaring@airage. com > Onderwerp: RE: [RCSE] tip aileron theory (was 6 servo+stylus) > > > A comment from the scale sailplane arena: > A flat turn as opposed to a steeply banked turn simply put, keeps a larger > "footprint" or projected wing area pointed at the lift which we > all know is > going up. If your in a large area of strong lift it doesn't matter much > either way. > I always use the shallowest bank angle in a thermal turn that > will allow me > to stay centered in the lift, there by exposing the largest > possible area of > the wing to the rising air. This is called efficiency. A > corollary I learned > from Karl Striedeck (full scale guru for those not familiar) also states: > always fly in the best air you can, even if it means straying off > course on > a dash to the gate at the end of a contest. > > Anyway, Full scale ships do indeed cross control, but not all > with rudder or > all with aileron. It depends on the ship. Many standard class (15 meter > ships) will correct with rudder. Larger unlimited ships like the Nimbus > four, have tiplets coupled with the rudder to manage cross > controlling on a > ship with an extremely high aspect ratio wing. In scale model flying, you > have to cross control with ailerons when you are flying a high > aspect ratio > ship if you expect to control your roll rate in a turn. A very few scale > models have tiplets which allow programmed cross controlling. > > By the way, myself and a few others are refining a six (or more) > servo wing > set up for the new generation of scale ships. These come equipped > with full > span flap and aileron combinations. There are mixes required that are very > similar to what is now being used in thermal duration, the > exception is that > spoilers are also a function included with scale ships. What we > are doing is > putting spoilers on the throttle stick( a scale standard practice), and > using the three position flap landing switch butterfly switch, > not for Crow > However), and a slider for a trimmer & snap flap function for > getting out of > a tight spot. > The only domestic radio that I found suitable so far is the JR > 10X. (it has > two sliders) I assume the Futaba 9ZAP may work also. If you have > a Multiplex > 4000, or Graupner MC-24, you have got it made. With a scale ship, we start > to run out of holes to plug in servos. We need those 12 channel rx's > > John Derstine > > P.S. Mike Lachowski has a great reference article on setting up > the 10x for > 6 or 8 servo wing on the ESL website suitable for TD ships. It is on the > root directory of that site. Sorry if this has been referenced previously. > > > > Endless Mountain Models > note new email address > E-mail; [EMAIL PROTECTED] > Web Page: http://www.geocities.com/scalesoar/EMM/rand.htm > > > -----Original Message----- > > From: Stefan Smets [mailto:[EMAIL PROTECTED]] > > Sent: Sunday, October 28, 2001 3:12 AM > > To: [EMAIL PROTECTED]; Soaring@airage. com > > Subject: RE: [RCSE] tip aileron theory (was 6 servo+stylus) > > > > > > Ok, > > > state on p. 28: ".. although many full-scale sailplane pilots do > > cross-control quite a bit ..". I've never flown a full-scale > sailplane, so > > I've no idea about that. > > I must add that by cross-controlling, he means "feeding > OPPOSITE rudder", > > not opposite ailerons ... > > > > > > >> or to fly flatter turns (although I'll never understand why > > > anyone would > > > >do that) > > > > > > > >I would guess to lose less lift in the turn ? > > > >Sometimes I try to level the wings a bit while turning by > > > cross-controlling > > > >the ailerons the other direction than the turn. I've even read > > > about that in > > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
