Tough for me to agree with. In the gravity situation, the "balance" of the plane would not change since the gravity vector is evenly distributed. If it were zero'ed, the plane would still be as straight and level as it ever were. It would experience a 32'/sec/sec acceleration upwards like a helium balloon, not like a pointed missle. This sudden lack of gravity is often experienced by fire tanker planes. When they dump, they largely balloon up. When they lose 1/2 their weight, the nose does not shoot skyward.
Bill
From: Sport_Aircraft@yahoogroups.com [mailto:Sport_Aircraft@yahoogroups.com] On Behalf Of Peter Walker
Sent: Tuesday, March 13, 2012 2:51 PM
To: Sport_Aircraft@yahoogroups.com
Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
Hello
In the theoretical turn off gravity with no changes to elevator and flaps a loop will develop Why?
The wing generates lift which would increase in zero gravity The elevator does not To maintain level flight would require reducing lift (pushing the stick forward)
BTW weight and balance set lift The elevator simply is a transfer mechanism
Peter
From: James Bair <jimbair@live.com>
To: Sport_Aircraft@yahoogroups.com
Sent: Wednesday, March 14, 2012 8:22 AM
Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
We agree.
From: Richard Williams
Sent: Tuesday, March 13, 2012 3:57 PM
Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
fellows,
I somewhat disagree with the 'when gravity disappears a loop will result' theory.
To perform a loop there must be a rotating force about the lateral axis (such as
an 'up' elevator.
As it is, there is no rotating force. in S&L, all the forces are balanced.
So the result of the removal of gravity is an imbalance in the 4 forces.
The result would be a 'very' fast climb. (but no loop)
R. Williams
---------- Original Message -----------
From: "James Bair" <mailto:jimbair%40live.com>
To: <mailto:Sport_Aircraft%40yahoogroups.com>
Sent: Tue, 13 Mar 2012 13:01:19 -0500
Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
> The lift being created by the wing is counteracting gravity (weight).
> If gravity were to suddenly disappear, we would start a loop
> immediately. When we point the lift vector sideways, we begin being
> pulled in that direction by the lift the wing is creating.
>
> From: Bill Watson
> Sent: Tuesday, March 13, 2012 12:50 PM
> To: mailto:Sport_Aircraft%40yahoogroups.com
> Subject: RE: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> Hey Jim, I have one for you (or anyone else that wants to play). If in
> straight and level flight, the main wing lift vector provides upness
> without looping our plane, why when we point the lift vector any
> amount sideways to we horizontal loop(turn)? eg: Why don't we continue
> to fly straight with only a sideways component to our flight?
>
> Bill
>
> From: mailto:Sport_Aircraft%40yahoogroups.com
> [mailto:mailto:Sport_Aircraft%40yahoogroups.com] On Behalf Of James Bair Sent:
> Tuesday, March 13, 2012 10:37 AM To: mailto:Sport_Aircraft%40yahoogroups.com
> Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> LOL. Yes, or a checkride. You are doing quite well, BTW. What a
> surprise. haha.
>
> So far we have:
>
> 1. Turns are caused by a horizontal component of lift.
>
> 2. This lift is controlled by the elevator.
>
> 3. This lift amount, or quantity, can be positive, negative, or zero.
>
> 4. The direction of lift, or the lift vector, is controlled by the ailerons.
>
> One aileron goes up, the other down. Does the sum total of aileron
> movement provide a net lifting force? Or simply a rolling force? (2
> questions at once. Hope you aren't overloaded.)
>
> From: Gary
>
> Sent: Tuesday, March 13, 2012 12:03 PM
>
> To: mailto:Sport_Aircraft%40yahoogroups.com
>
> Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> This is like a bfr. I say the ailerons.
>
> Sent from my Verizon Wireless 4GLTE Phone
>
> -----Original message-----
>
> From: James Bair <mailto:jimbair%40live.com>
> To: mailto:Sport_Aircraft%40yahoogroups.com
> Sent: Tue, Mar 13, 2012 16:50:50 GMT+00:00
> Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> So far we have determined that turns (in the horizontal is the matter
> under discussion. Turns in the vertical can also occur.):
>
> 1. are caused by a horizontal component of lift.
>
> 2. This lift is controlled by the elevator.
>
> 3. This lift amount, or quantity, can be positive, negative, or zero.
>
> What control surface controls the direction the wings are pointed
> (i.e., the lift vector) in their possible range of right and left all
> the way from straight up to straight down and all angles between?
>
> From: Gary
>
> Sent: Tuesday, March 13, 2012 10:40 AM
>
> To: mailto:Sport_Aircraft%40yahoogroups.com
>
> Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> Yes
>
> Sent from my Verizon Wireless 4GLTE Phone
>
> -----Original message-----
>
> From: James Bair <mailto:jimbair%40live.com>
> To: mailto:Sport_Aircraft%40yahoogroups.com
> Sent: Tue, Mar 13, 2012 13:46:55 GMT+00:00
> Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> Is it possible to control the lift the wing produces through a range
> from positive lift (lift in an upward direction relative to the top of
> the wing) to zero lift to negative lift (lift in a downward direction
> relative to the bottom of the wing.) by moving the elevator?
>
> From: Gary N Orpe
>
> Sent: Tuesday, March 13, 2012 3:49 AM
>
> To: mailto:Sport_Aircraft%40yahoogroups.com
>
> Subject: RE: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> Elevator
>
> Gary
>
> From: mailto:Sport_Aircraft%40yahoogroups.com
> [mailto:mailto:Sport_Aircraft%40yahoogroups.com] On Behalf Of James Bair Sent:
> Monday, March 12, 2012 10:45 AM To: mailto:Sport_Aircraft%40yahoogroups.com
> Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> I'll buy that. I am trying to develop a method for teaching this
> concept to students and I need a willing participant. What I would
> like to try is asking a series of questions and see where it takes us.
> But I need a participant with an open mind and a desire to learn or
> if he already knows the answer, help others learn. So, if you're
> game I'll ask some questions. If you're not, just don't answer.
>
> What control surface controls the amount of lift the wings produce?
>
> From: Gary
>
> Sent: Monday, March 12, 2012 11:41 AM
>
> To: mailto:Sport_Aircraft%40yahoogroups.com
>
> Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> Horizontal components of lift
>
> Sent from my Verizon Wireless 4GLTE Phone
>
> -----Original message-----
>
> From: James Bair <mailto:jimbair%40live.com>
> To: mailto:Sport_Aircraft%40yahoogroups.com
> Sent: Mon, Mar 12, 2012 16:27:09 GMT+00:00
> Subject: Re: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> Gary,
>
> I am curious. What do you believe makes airplanes turn? You do not
> need to mention any particular flight control in your answer if you
> don't wish to. If you wish to, that is fine, too.
>
> Jim Bair
>
> From: Gary N Orpe
>
> Sent: Monday, March 12, 2012 11:15 AM
>
> To: mailto:Sport_Aircraft%40yahoogroups.com
>
> Subject: RE: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
>
> I never mentioned the elevator
>
> Gary
>
> -> -----Original Message-----
> -> From: mailto:Sport_Aircraft%40yahoogroups.com
> -> [mailto:mailto:Sport_Aircraft%40yahoogroups.com] On Behalf Of
> Michael Huckle -> Sent: Monday, March 12, 2012 8:17 AM -> To: Sport Aircraft
> -> Subject: Light-Sport Aircraft Yahoo group Re: Answer to Rich's Question
> ->
> ->
> ->
> -> > Posted by: "Gary N Orpe" mailto:garyo%40bak.rr.com
> -> > Can anyone actually do this turn thing? Amazing.
> -> > Hahaha ;-)
> -> > Gary
> ->
> ->
> -> ;-)
> -> Yes, try it for yourself Gary.....
> -> Fly North, and then turn either Northwest or West.
> ->
> -> (see if the elevator is your primary turn control) (I'm betting it's
> not.)
> ->
> ->
> -> Mike
> ->
> ->
> ->
> -> .
> ->
> ->
> ->
> ->
> ->
> ->
> -> ------------------------------------
> ->
> -> Yahoo! Groups Links
> ->
> ->
> ->
------- End of Original Message -------
__._,_.___
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
__,_._,___
No comments:
Post a Comment