Original Posted By: "Rick Holland"
Pietenpol-List: pitch trim saved Sean Tucker's life
RE: Pietenpol-List: pitch trim saved Sean Tucker's life
Original Posted By: "Jack T. Textor"
RE: Pietenpol-List: pitch trim saved Sean Tucker's life
Original Posted By:
RE: Pietenpol-List: Pitch trimming
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I am no expert on aeronautical engineering but as a photographer I have seenplenty of aircraft with aluminum tabs added to the elevator that are bent atangles to correct pitch in level flight. I am not sure about the strength ofthese into a wooden elevator? Any comments on this? Too simple?Rob-----Original Message-----
I am no expert on aeronautical engineering but as a photographer I have seenplenty of aircraft with aluminum tabs added to the elevator that are bent atangles to correct pitch in level flight. I am not sure about the strength ofthese into a wooden elevator? Any comments on this? Too simple?Rob-----Original Message-----
Re: Pietenpol-List: Pitch trimming
Original Posted By: "Rob Stapleton"
I've been wondering the same thing. I don't think I've ever seen a Piet with a "bendable" trim tab. Have I just not been looking hard enough?....Carl Vought----- Original Message -----
I've been wondering the same thing. I don't think I've ever seen a Piet with a "bendable" trim tab. Have I just not been looking hard enough?....Carl Vought----- Original Message -----
RE: Pietenpol-List: pitch trim saved Sean Tucker's life
Original Posted By:
Rick,I would put one on both, otherwise one would be in trim and one not.You will get a rolling effect.The cable and bellcrank system will transfer some trim to the other flipperbut not as efficient as a rigid torque tube.Hans "Rick Holland" To Sent by: pietenpol-list(at)matronics.com owner-pietenpol-l cc ist-server@matron ics.com Subject Re: Pietenpol-List: Trim tab was pitch trim saved Sean Tucker's life 04/26/2006 08:09 AM Please respond to pietenpol-list@ma tronics.com So attaching a metal trim tab to the back of one flipper will not fix apitch trim problem? You must put a tab on both?Rick HOn 4/25/06, Hans Vander Voort wrote: hans.vander.voort(at)alfalaval.com> Rick, The only problem I see with this is that the Elevator flippers are not connected (no torque tube) Thus you trim only one flipper and not the other. Unless of course you place servos in both. Same for aluminum trim tabs Further the elevator cables are 3/32 with a strength of 1000+ Lbs. With a 1 : 5 ratio on your stick you will need to put 200 Lbs of force on the stick to break something. The only way you will such high stress on the tail surfaces is during aerobatics (better bring a parachute) ========================== - The Pietenwww.matronics.com/Navigator?Pietenpol-List">http://www.matronics.com/Navigator?Pietenpol-List ========================= - NEW MATRONICS========================= - nbsp; -Matt Dralle, List Admin. ================================================--Rick Holland"Logic is a wreath of pretty flowers, that smell bad"________________________________________________________________________________Subject: RE: Pietenpol-List: pitch trim saved Sean Tucker's lifeDate: Wed, 26 Apr 2006 09:56:36 -0400
Rick,I would put one on both, otherwise one would be in trim and one not.You will get a rolling effect.The cable and bellcrank system will transfer some trim to the other flipperbut not as efficient as a rigid torque tube.Hans "Rick Holland" To Sent by: pietenpol-list(at)matronics.com owner-pietenpol-l cc ist-server@matron ics.com Subject Re: Pietenpol-List: Trim tab was pitch trim saved Sean Tucker's life 04/26/2006 08:09 AM Please respond to pietenpol-list@ma tronics.com So attaching a metal trim tab to the back of one flipper will not fix apitch trim problem? You must put a tab on both?Rick HOn 4/25/06, Hans Vander Voort wrote: hans.vander.voort(at)alfalaval.com> Rick, The only problem I see with this is that the Elevator flippers are not connected (no torque tube) Thus you trim only one flipper and not the other. Unless of course you place servos in both. Same for aluminum trim tabs Further the elevator cables are 3/32 with a strength of 1000+ Lbs. With a 1 : 5 ratio on your stick you will need to put 200 Lbs of force on the stick to break something. The only way you will such high stress on the tail surfaces is during aerobatics (better bring a parachute) ========================== - The Pietenwww.matronics.com/Navigator?Pietenpol-List">http://www.matronics.com/Navigator?Pietenpol-List ========================= - NEW MATRONICS========================= - nbsp; -Matt Dralle, List Admin. ================================================--Rick Holland"Logic is a wreath of pretty flowers, that smell bad"________________________________________________________________________________Subject: RE: Pietenpol-List: pitch trim saved Sean Tucker's lifeDate: Wed, 26 Apr 2006 09:56:36 -0400
RE: Pietenpol-List: Trim tab was pitch trim saved Sean Tucker's life
Original Posted By:
Re: Pietenpol-List: pitch trim saved Sean Tucker's life
Original Posted By: "Ken Anderson"
Subject: Re: Pietenpol-List: pitch trim saved Sean Tucker's lifeIn a message dated 4/26/2006 8:16:31 AM Central Standard Time, at7000ft(at)gmail.com writes:Great idea, call it an ailevator. If you lose aileron control you can turn using differential elevator and rudder control. Just like the controls on a flying wing.One of the guys in my Hillhoppers R. C. Flying Club (years ago) used separate servo's on each half of the flippers, and coupled them with the ailerons, using the new type computer radio. The intent was to get a higher roll rate. It made no noticable difference. Conclusion was that the flippers do not have a long enough arm away from the longititude axis to have any effect, other than causing a lot of drag and slowing down the airspeed. Lesson learned.Chuck G.NX770CG________________________________________________________________________________
Subject: Re: Pietenpol-List: pitch trim saved Sean Tucker's lifeIn a message dated 4/26/2006 8:16:31 AM Central Standard Time, at7000ft(at)gmail.com writes:Great idea, call it an ailevator. If you lose aileron control you can turn using differential elevator and rudder control. Just like the controls on a flying wing.One of the guys in my Hillhoppers R. C. Flying Club (years ago) used separate servo's on each half of the flippers, and coupled them with the ailerons, using the new type computer radio. The intent was to get a higher roll rate. It made no noticable difference. Conclusion was that the flippers do not have a long enough arm away from the longititude axis to have any effect, other than causing a lot of drag and slowing down the airspeed. Lesson learned.Chuck G.NX770CG________________________________________________________________________________