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[rebel-builders] "Level Flight Attitude"

https://www.murphybuilders.net/viewtopic.php?f=1&t=7971

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[rebel-builders] "Level Flight Attitude"

Posted: Sun Feb 19, 2012 12:08 pm
by Ron Shannon
In Ch. 17 of the Rebel manual (stabilizer install) it calls for
horizontal leveling using the Front Carrythroughs. Somewhere else (I
forget where) I think it calls for leveling pitch attitude using the
bottom of the cabin. I assume these are the same for the Elite, but
don't know.


Robert Andrews wrote:
Hi,

The Weight and Balance section in the Elite manual says to put the aircraft
in a level flight attitude. Yet, no where does it say what that is - or at
least if its there, I haven't found it yet. For certified aircraft, the
TCDS defines how to get a given aircraft in the "level flight attitude"
(e.g., plumb from one point to another point). Since the bottom of the wing
is a few degrees up from the cabin floor, I would tend to think when the
cabin floor is level (for and aft), the aircraft is in the "level flight
attitude" w.r.t. pitch ... but would like to actually read that somewhere.
Asside from getting the W&B correct, this impacts calculating where the step
goes when rigging floats. Because the distance is a fair distance between
the bottom of the wing and the float step, A plumb line down from a given
%MAC (e.g. 45%) from a improperly rotated aircraft will result in the step
NOT being where you planned to put it. So, what defines the "level flight
attitude" for an Elite? ... and other Murphy derivitives?

Cheers, Bob 612e

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[rebel-builders] "Level Flight Attitude"

Posted: Sun Feb 19, 2012 12:08 pm
by Mike Kimball
For the Super Rebel MAM told me to level the floor.

Mike

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Ron
Shannon
Sent: Tuesday, May 22, 2007 8:04 AM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] "Level Flight Attitude"

In Ch. 17 of the Rebel manual (stabilizer install) it calls for
horizontal leveling using the Front Carrythroughs. Somewhere else (I
forget where) I think it calls for leveling pitch attitude using the
bottom of the cabin. I assume these are the same for the Elite, but
don't know.


Robert Andrews wrote:
Hi,

The Weight and Balance section in the Elite manual says to put the
aircraft
in a level flight attitude. Yet, no where does it say what that is - or
at
least if its there, I haven't found it yet. For certified aircraft, the
TCDS defines how to get a given aircraft in the "level flight attitude"
(e.g., plumb from one point to another point). Since the bottom of the
wing
is a few degrees up from the cabin floor, I would tend to think when the
cabin floor is level (for and aft), the aircraft is in the "level flight
attitude" w.r.t. pitch ... but would like to actually read that somewhere.
Asside from getting the W&B correct, this impacts calculating where the
step
goes when rigging floats. Because the distance is a fair distance between
the bottom of the wing and the float step, A plumb line down from a given
%MAC (e.g. 45%) from a improperly rotated aircraft will result in the step
NOT being where you planned to put it. So, what defines the "level flight
attitude" for an Elite? ... and other Murphy derivitives?

Cheers, Bob 612e

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[rebel-builders] "Level Flight Attitude"

Posted: Sun Feb 19, 2012 12:08 pm
by Mike Betti
I used the bottom of the cabin or sidesill. The W&B section in the manual
shows a drawing of the airplane with an extending reference line from this
cabin sill being parallel with the ground.
Mike Betti

----- Original Message -----
From: "Robert Andrews" <robert@montanasky.us>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, May 22, 2007 7:26 AM
Subject: [rebel-builders] "Level Flight Attitude"

Hi,

The Weight and Balance section in the Elite manual says to put the
aircraft
in a level flight attitude. Yet, no where does it say what that is - or
at
least if its there, I haven't found it yet. For certified aircraft, the
TCDS defines how to get a given aircraft in the "level flight attitude"
(e.g., plumb from one point to another point). Since the bottom of the
wing
is a few degrees up from the cabin floor, I would tend to think when the
cabin floor is level (for and aft), the aircraft is in the "level flight
attitude" w.r.t. pitch ... but would like to actually read that somewhere.
Asside from getting the W&B correct, this impacts calculating where the
step
goes when rigging floats. Because the distance is a fair distance between
the bottom of the wing and the float step, A plumb line down from a given
%MAC (e.g. 45%) from a improperly rotated aircraft will result in the step
NOT being where you planned to put it. So, what defines the "level flight
attitude" for an Elite? ... and other Murphy derivitives?

Cheers, Bob 612e




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[rebel-builders] "Level Flight Attitude"

Posted: Sun Feb 19, 2012 12:08 pm
by Drew Dalgleish
Hi Bob Like others said just level the floor. For your float instalation if
you're using murphy floats I think the setup as designed by Daryl works
pretty good. There's been some discussion about what the height and the
throat angle should be but I don't recall there ever being an issue with
the step location.

At 05:26 AM 5/22/2007 -0700, you wrote:
Hi,

The Weight and Balance section in the Elite manual says to put the aircraft
in a level flight attitude. Yet, no where does it say what that is - or at
least if its there, I haven't found it yet. For certified aircraft, the
TCDS defines how to get a given aircraft in the "level flight attitude"
(e.g., plumb from one point to another point). Since the bottom of the wing
is a few degrees up from the cabin floor, I would tend to think when the
cabin floor is level (for and aft), the aircraft is in the "level flight
attitude" w.r.t. pitch ... but would like to actually read that somewhere.
Asside from getting the W&B correct, this impacts calculating where the step
goes when rigging floats. Because the distance is a fair distance between
the bottom of the wing and the float step, A plumb line down from a given
%MAC (e.g. 45%) from a improperly rotated aircraft will result in the step
NOT being where you planned to put it. So, what defines the "level flight
attitude" for an Elite? ... and other Murphy derivitives?

Cheers, Bob 612e




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Drew



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[rebel-builders] "Level Flight Attitude"

Posted: Sun Feb 19, 2012 12:08 pm
by Robert Andrews
Thanks Drew.

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Drew Dalgleish
Sent: Tuesday, May 22, 2007 4:57 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] "Level Flight Attitude"


Hi Bob Like others said just level the floor. For your float instalation if
you're using murphy floats I think the setup as designed by Daryl works
pretty good. There's been some discussion about what the height and the
throat angle should be but I don't recall there ever being an issue with
the step location.

At 05:26 AM 5/22/2007 -0700, you wrote:
Hi,

The Weight and Balance section in the Elite manual says to put the aircraft
in a level flight attitude. Yet, no where does it say what that is - or at
least if its there, I haven't found it yet. For certified aircraft, the
TCDS defines how to get a given aircraft in the "level flight attitude"
(e.g., plumb from one point to another point). Since the bottom of the
wing
is a few degrees up from the cabin floor, I would tend to think when the
cabin floor is level (for and aft), the aircraft is in the "level flight
attitude" w.r.t. pitch ... but would like to actually read that somewhere.
Asside from getting the W&B correct, this impacts calculating where the
step
goes when rigging floats. Because the distance is a fair distance between
the bottom of the wing and the float step, A plumb line down from a given
%MAC (e.g. 45%) from a improperly rotated aircraft will result in the step
NOT being where you planned to put it. So, what defines the "level flight
attitude" for an Elite? ... and other Murphy derivitives?

Cheers, Bob 612e




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[rebel-builders] "Level Flight Attitude"

Posted: Sun Feb 19, 2012 12:08 pm
by Alan Hepburn
Bob:

I used the bottom of the door sills, which on the Elite is the same as the
cabin floor. Then the float step is at 45% MAC with the fuselage in that
position.

Somebody was asking about ailerons/flaps, and they are reflexed 5 degrees
when neutral and full up respectively.

Al

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Robert Andrews
Sent: Tuesday, May 22, 2007 11:17 PM
To: rebel-builders@dcsol.com
Subject: RE: [rebel-builders] "Level Flight Attitude"


Thanks Drew.

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Drew Dalgleish
Sent: Tuesday, May 22, 2007 4:57 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] "Level Flight Attitude"


Hi Bob Like others said just level the floor. For your float instalation if
you're using murphy floats I think the setup as designed by Daryl works
pretty good. There's been some discussion about what the height and the
throat angle should be but I don't recall there ever being an issue with
the step location.

At 05:26 AM 5/22/2007 -0700, you wrote:
Hi,

The Weight and Balance section in the Elite manual says to put the aircraft
in a level flight attitude. Yet, no where does it say what that is - or at
least if its there, I haven't found it yet. For certified aircraft, the
TCDS defines how to get a given aircraft in the "level flight attitude"
(e.g., plumb from one point to another point). Since the bottom of the
wing
is a few degrees up from the cabin floor, I would tend to think when the
cabin floor is level (for and aft), the aircraft is in the "level flight
attitude" w.r.t. pitch ... but would like to actually read that somewhere.
Asside from getting the W&B correct, this impacts calculating where the
step
goes when rigging floats. Because the distance is a fair distance between
the bottom of the wing and the float step, A plumb line down from a given
%MAC (e.g. 45%) from a improperly rotated aircraft will result in the step
NOT being where you planned to put it. So, what defines the "level flight
attitude" for an Elite? ... and other Murphy derivitives?

Cheers, Bob 612e




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Drew



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