Pietenpol-List: Elevator droop

An archive of the Matronics Pietenpol Listserve.
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Pietenpol-List: Elevator droop

Post by matronics »

Original Posted By: Brian Kenney
Uh Oh........here are some photos of a to-the-plans, properly-built (and powered) Pietenpol in flight. If I am not mistaken, I detect some elevator droop in all of them.You know, there are consequences, to making changes to the original genuine BHP-authored plans. Just say'n.And by the way, what is all this talk of "improper" angle of incidence? ....and "wrongly-designed" mounting-angle of the elevator? There is a lot of dissention on this list. Disturbing.Dan HelsperPuryear, TN________________________________________________________________________________
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Pietenpol-List: Elevator droop

Post by matronics »

Original Posted By: danhelsper(at)aol.com
That's surprising -to me it is a bunch of people sharing ideas and concepts to better understand how things work. Sorry if that disturbs you. Subject: Pietenpol-List: Elevator droop
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> Pietenpol-List: Elevator droop

Post by matronics »

Original Posted By:> danhelsper(at)aol.com
Brian,You do understand there's a lot of tongue-in-cheek stuff that goes on here, right?GaryNX308MBSent from my iPhone> On Mar 27, 2014, at 6:34 PM, Brian Kenney wrote:> > That's surprising -to me it is a bunch of people sharing ideas and concepts to better understand how things work. Sorry if that disturbs you. > > To: pietenpol-list(at)matronics.com> Subject: Pietenpol-List: Elevator droop
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Re: Pietenpol-List: Elevator droop

Post by matronics »

Original Posted By: Brian Kenney
We're ALL so bad! :-)One really good thing is that without this discussionwe wouldn't have been privy to some really greatpics! ClifNot a shred of evidence exists in favor of the idea that life is serious. -Brendan Gill Brian, You do understand there's a lot of tongue-in-cheek stuff that goes on here, right? Gary NX308MB________________________________________________________________________________Subject: Re: Pietenpol-List: Elevator droop
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>> Pietenpol-List: Elevator droop

Post by matronics »

Original Posted By:>> danhelsper(at)aol.com
No I thought my family invented it. That's why I left home.Sent from my iPad> On Mar 27, 2014, at 9:44 PM, "Gary Boothe" wrote:> > Brian,> > You do understand there's a lot of tongue-in-cheek stuff that goes on here, right?> > Gary> NX308MB> > Sent from my iPhone> >> On Mar 27, 2014, at 6:34 PM, Brian Kenney wrote:>> >> That's surprising -to me it is a bunch of people sharing ideas and concepts to better understand how things work. Sorry if that disturbs you. >> >> To: pietenpol-list(at)matronics.com>> Subject: Pietenpol-List: Elevator droop
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Re: Pietenpol-List: Elevator droop

Post by matronics »

Original Posted By: Michael Perez
if you look at the website"the vintage aviator" you will see inflight pics of afokker D-8 with exactly the same sort of droop on it's elevator. this is commonlyseen on parasol type aircraft, and is a product of the interaction betweenthe airflow coming off the trailing edge of the wing and the tail surfaces thepiet airfoil has an umcommonly high cruising lift coefficient closely relatedto its large pitching moment. its a bit counterintuitive, you would think thatin order to counter the more than 900 foot pounds of torque twisting on thewing at 80+ miles per hour that the elevator would be pointing up, but you don'tgenerally see that unless the "decalage" is off or a nose heavy conditionis present. this particular behavior is not by itself indicative of an aft ofC.G but it's not an excuse to be an idiot and ignore or ridicule william wynnesheartfelt advice.just sayin. ________________________________________________________________________________Date: Fri, 28 Mar 2014 14:07:03 -0700 (PDT)
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Re: Pietenpol-List: Elevator droop

Post by matronics »

Original Posted By: Gary Boothe
=0A =0A=0A =0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0AUh Oh........here are some photos of a to-the-plans=2C properly-built (and powered) Pietenpol in flight. If I am not mistaken=2C I detect some elevator droop in all of them.=0AYou know=2C there are consequences=2C to making changes to the original genuine BHP-authored plans. Just say'n.=0A=0A=0A =0A=0A=0A=0A=0A=0A=0A=0AAnd by the way=2C what is all this talk of "improper" angle of incidence? ....and "wrongly-designed" mounting-angle of the elevator? There is a lot of dissention on this list. Disturbing.=0A=0A=0A=0A=0A=0A=0A=0A =0A=0A=0A=0A=0A=0A=0A=0ADan Helsper=0A=0A=0A=0A=0A=0A=0A=0APuryear=2C TN=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A=0A ________________________________________________________________________________Subject: Re: Pietenpol-List: Elevator droop
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Pietenpol-List: Corvair Mounts

Post by matronics »

Original Posted By: "john francis"
>> >> >> >> Uh Oh........here are some photos of a to-the-plans, properly-built (and powered) Pietenpol in flight. If I am not mistaken, I detect some elevator droop in all of them. You know, there are consequences, to making changes to the original genuine BHP-authored plans. Just say'n.>> >> And by the way, what is all this talk of "improper" angle of incidence? ....and "wrongly-designed" mounting-angle of the elevator? There is a lot of dissention on this list. Disturbing.>> >> Dan Helsper>> Puryear, TN> > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> ________________________________________________________________________________Subject: Pietenpol-List: Corvair Mounts
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