| Author | Message | ||
     Werner Maag, CH8174 Stadel, Switzerland New member Username: Wmaag Post Number: 19 Registered: 01-2003 |
Soon my Express will undergo full assembly on the airport (LFZF near Baden Switzerland) I installed a follow up flap lever, so the exact detents for the flap settings are still to be defined. What is your choice and experience with the flap settings in ° for Takeoff Approach Landing on short runways? Thanks for all inputs | ||
| Jim Butler (Unregistered Guest) Unregistered guest |
I use 20 degrees for take-off, 10 degrees on the downwind for landing, 20 degrees on base, and full flaps on final. These flap settings in landing pattern help me keep the nose lower so I can see over it. Jim | ||
| Reinhard Metz New member Username: Reinhard_metz Post Number: 71 Registered: 03-2003 |
I use 10 deg on take-off and 40 degrees on landing, typically cranked in toward the end of downwind or a mile out. Exception is high headwind on final, in which case I reduce the flaps, as much as none, if it's over 30 Knts. I've never had an issue with seeing over the cowl - the nose angle isn't very sensitive to flaps, just airspeed. | ||
| carter_Smith (Unregistered Guest) Unregistered guest |
I would agree with both Jim and Reinhard - just split the difference for take off: 15 degrees. 20 or so on base and full flaps(40 degrees) on final seems about right. I'm still in phase one and I don't have detents for the flap settings yet. I'll post my findings soon. | ||
| Allyn Roe (Unregistered Guest) Unregistered guest |
A quick way for takeoff is to align the flaps with a full deflected aileron. Flaps as necessary on landing, up to the full 40 degrees. | ||
| Werner Maag, CH8174 Stadel, Switzerland New member Username: Wmaag Post Number: 32 Registered: 01-2003 |
Hallo Gentlemen As Henri Walser is now testing his new CT Type Express, they tried to tame it's habits a bit with implementing some Vortex Generators VGS on the lower horizontal stabilizer, the rudder and finally the wings. Have a look at the video in u-tube filmed by our Swiss Vortex Guru Viktor Strausak and you won't beleave the difference in the pattern of the wool strings! It noe seems to be fully flarable with low speed, hold the nose wheel up after landing and would make it more suitable for very short runways and grass! Viktor reports: VGs on Express-CT HB-YMH Express CT Motor Continental IO 360 ES1B, 6 Zyl, 210 PS MTOW 1451 kg. Cruise ca. 140 kt, VNE 210 kt. NACA Profile Wing 4.2m, initially VGS on outer 2.0m (outside orange strip on video in front of aileron area) Test TOW 1360kg, 3 Personen, mid CG Stall with VGs (Stall no VGs) clean idle 45kt, (60kt) Fl10,T/O idle 43kt Fl40,Ldg idle 42kt (55kt) Power 60% clean 40kt (55) Fl10,T/O 38kt (55) Fl40,Ldg 38kt (55) Power MCT Clean 40kt Fl10, 38kt the link is http://gallery.me.com/viktorstrausak#100271 I hope the link works. I will be on the road in Canada and US til end of july, so no regular contact posible, but Henri Walser is probably ready to tell the story. Werner Maag | ||
| Al Kittleson New member Username: Al38kit Post Number: 54 Registered: 07-2007 |
Werner, Thanks for the info and link. It worked great! ...I think I have a pretty good feel for how/why the VG's worked on the main wing. I guess I'm wondering if there had been ineffective control on both the rudder and elevator causing him to put them there as well. I also have a CT that is not flying now (again). Unless there is a lack of up elevator, I'm trying to figure out what good it would do to VG the lower elevator. It appeared to have good nose up travel. Perhaps the first few stalls had the elevator VG's and prior to that, an inability to achieve a full stall...I don't know. I did find it a bit confusing as the VG's may have been on the tail for all video, and no baseline for the up elevator without them...(I hope my confusion makes sense to someone besides me.) Again, great post, thanks. | ||
| Chaz King New member Username: Chazking Post Number: 35 Registered: 01-2005 |
Werner, Thank you. That's a very informative video. Nothing like "seeing is believing!" Regards, Chäz | ||
| Ben Baltrusaitis New member Username: Freepistol Post Number: 30 Registered: 09-2005 |
Excellent video and test, Werner. Did you test for cruise speed difference? ben | ||
| henri walser New member Username: 43henri Post Number: 19 Registered: 02-2001 |
On all Express builder,I build this Express-CT during more than .... year according the books from Ken Wheeler.The only change was the Landing gear from Larry. After the testflight start last year in september, I found out that my Express dont like to flare, I have to fly down to the runway. After take with Viktor Strausack (VG's Pro) this projekt to modify my Express-CT with VG's start. The video from Vik shows the result, lower stall speed, shorter T.O. and Ldg. distance. For more infos from my Express-CT send me some e-mail Henry Walser htwb@orange.fr |