Re: [Flightgear-devel] Stall horn question

2001-11-29 Thread Don Baker
The one on my airplane was spring loaded. Don Baker Andy Ross wrote: > > Don Baker wrote: > > It isn't gravity. It is simply that only at high angle of attack > > conditions is there enough air to shove it upward. > > Ahem, shove it upwards against what force? :) > > At zero speed, there

Re: [Flightgear-devel] Stall horn question

2001-11-29 Thread Andy Ross
Don Baker wrote: > It isn't gravity. It is simply that only at high angle of attack > conditions is there enough air to shove it upward. Ahem, shove it upwards against what force? :) At zero speed, there is zero aerodynamic force. What holds it down, if not gravity? At least on the Cheroke

Re: [Flightgear-devel] Stall horn question

2001-11-29 Thread Ralph Jones
At 03:10 PM 11/28/2001 -0600, you wrote: >David Megginson writes: > > Andy Ross writes: > > > > > On the ground, gravity holds it down (open), so the horn is off. > > > > Now there's a good practical joke -- stick the horn tab on with a bit > > of duct tape. > >As long as they remember their pilo

RE: [Flightgear-devel] Stall horn question

2001-11-29 Thread Gene Buckle
> FAA was going to issue an AD to placard the wing, but then later changed it > to a note and diagram added to the pilot operation manual. > > Explains procedure, shows wing, shows arrow pointing to the stall horn, with > instructions "suck here". > Did the message I posted about this ever make

RE: [Flightgear-devel] Stall horn question

2001-11-28 Thread Ryan Larson
EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, November 28, 2001 3:24 PM To: [EMAIL PROTECTED] Subject: RE: [Flightgear-devel] Stall horn question I have had the following described to me, but never saw it myself. There have been several accidents over

RE: [Flightgear-devel] Stall horn question

2001-11-28 Thread donald . baker
s L. Olson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, November 28, 2001 3:10 PM To: [EMAIL PROTECTED] Subject: Re: [Flightgear-devel] Stall horn question David Megginson writes: > Andy Ross writes: > > > On the ground, gravity holds it down (open), so the horn is off. > > Now t

RE: [Flightgear-devel] Stall horn question

2001-11-28 Thread donald . baker
TED]] Sent: Wednesday, November 28, 2001 2:34 PM To: [EMAIL PROTECTED] Subject: Re: [Flightgear-devel] Stall horn question David Megginson wrote: > Alex Perry wrote: > > Many Cessnas have a small metal tab that sticks out of the front of > > the wing, at the stagnant airflow point

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Alex Perry
> Now there's a good practical joke -- stick the horn tab on with a bit > of duct tape. You don't need that; there's enough planes out there where the horn is really loud, so that after several seconds concentrated listening you are fairly sure that it is in fact going off ... quietly. _

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Tony Peden
On Wednesday 28 November 2001 02:12 pm, you wrote: > Tony Peden writes: > > Apparently you missed my post, I made that change > > several weeks ago. > > The JSBSim Aircraft::GetStallWarn still returns a bool, and JSBSim.cxx > still treats the stall as a boolean property in some places. Ah, so i

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread David Megginson
Tony Peden writes: > Apparently you missed my post, I made that change > several weeks ago. The JSBSim Aircraft::GetStallWarn still returns a bool, and JSBSim.cxx still treats the stall as a boolean property in some places. All the best, David -- David Megginson [EMAIL PROTECTED] _

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Tony Peden
--- David Megginson <[EMAIL PROTECTED]> wrote: > John Check writes: > > > Ah, hence the slow attack. Can plib put an attack > envelope when > > the sound starts to play? > > We've talked about reporting stall as a double > rather than a bool -- > i.e. there'd be a transition zone where the st

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Curtis L. Olson
David Megginson writes: > Andy Ross writes: > > > On the ground, gravity holds it down (open), so the horn is off. > > Now there's a good practical joke -- stick the horn tab on with a bit > of duct tape. As long as they remember their pilot training and don't hurt themselves ... Curt. -- Cu

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread David Megginson
Andy Ross writes: > On the ground, gravity holds it down (open), so the horn is off. Now there's a good practical joke -- stick the horn tab on with a bit of duct tape. All the best, David -- David Megginson [EMAIL PROTECTED] ___ Flightgear-de

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread David Megginson
John Check writes: > Ah, hence the slow attack. Can plib put an attack envelope when > the sound starts to play? We've talked about reporting stall as a double rather than a bool -- i.e. there'd be a transition zone where the stall is between 0 and 100%. When JSBSim supports that, we can rig

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Andy Ross
David Megginson wrote: > Alex Perry wrote: > > Many Cessnas have a small metal tab that sticks out of the front of > > the wing, at the stagnant airflow point for the desired angle of > > attack. > > Do you have to turn it off manually when you're sitting on the tarmac > or taxiing slowly?

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread John Check
On Wednesday 28 November 2001 10:28 am, you wrote: > John Check writes: > > Ah.. Thats good. Then I can make a *short* sample. > > BTW... this is kind of replying to myself but > > According to the doco for SL (probably out of date but): > > --- > > class slSample: Allows you to read s

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread John Check
On Wednesday 28 November 2001 7:48 am, you wrote: > Alex Perry writes: > > > > > I just committed a new stall horn sample (finally) but I have > > > > > a question. Is it supposed to be a continuous tone or is it > > > > > cyclical? > > > > It is a continuous tone, for as long as the angle o

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread John Check
On Wednesday 28 November 2001 4:54 am, you wrote: > John Check wrote: > > - > > In the constructor for FGSoundMgr: > > > > FGSoundMgr::FGSoundMgr() { > > audio_sched = new slScheduler( 8000 ); > > .. > > } > > > > Which, if I understand it right, is setting the playback rate

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread David Megginson
Alex Perry writes: > Many Cessnas have a small metal tab that sticks out of the front of the > wing, at the stagnant airflow point for the desired angle of attack. The > tab is horizontal and maybe 1 cm wide and less than that long. When the > airflow is from above that point, as normal, th

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Erik Hofman
Alex Perry wrote: > > > Sounds reasonable. It would be nice if this could be handled > > transparently on the plib side, but I don't think anyone is working > > real hard on the audio portions of plib these days ... :-( > > Yeah; but one of the reasons nobody is working on it is they're forever

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Alex Perry
> I have read that the stall horn on small planes is just that -- a > little horn mounted on the body so that the wind blows through it when > the angle of attack is too high. Apparently, you can blow into it > lightly to test it. Yes, especially on aircraft that do not have a built-in electrica

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Alex Perry
> Sounds reasonable. It would be nice if this could be handled > transparently on the plib side, but I don't think anyone is working > real hard on the audio portions of plib these days ... :-( Yeah; but one of the reasons nobody is working on it is they're forever thinking of replacing the whol

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Erik Hofman
John Check wrote: > - > In the constructor for FGSoundMgr: > > FGSoundMgr::FGSoundMgr() { > audio_sched = new slScheduler( 8000 ); > .. > } > > Which, if I understand it right, is setting the playback rate to 8Khz. > So even though we're reading samples off the disk at arb

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread Curtis L. Olson
John Check writes: > Ah.. Thats good. Then I can make a *short* sample. > BTW... this is kind of replying to myself but > According to the doco for SL (probably out of date but): > --- > class slSample: Allows you to read sound samples from disk in a range of > standard formats, and t

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread David Megginson
Alex Perry writes: > > > > I just committed a new stall horn sample (finally) but I have > > > > a question. Is it supposed to be a continuous tone or is it > > > > cyclical? > > It is a continuous tone, for as long as the angle of attack is too high. > There is no warble or anything else

Re: [Flightgear-devel] Stall horn question

2001-11-28 Thread John Check
On Wednesday 28 November 2001 2:21 am, you wrote: > > > > I just committed a new stall horn sample (finally) but I have a > > > > question. Is it supposed to be a continuous tone or is it cyclical? > > It is a continuous tone, for as long as the angle of attack is too high. > There is no warble or

Re: [Flightgear-devel] Stall horn question

2001-11-27 Thread Alex Perry
> > > I just committed a new stall horn sample (finally) but I have a question. > > > Is it supposed to be a continuous tone or is it cyclical? It is a continuous tone, for as long as the angle of attack is too high. There is no warble or anything else exciting going on. ___

Re: [Flightgear-devel] Stall horn question

2001-11-27 Thread John Check
On Wednesday 28 November 2001 1:56 am, you wrote: > On Wednesday 28 November 2001 1:30 am, you wrote: > > I just committed a new stall horn sample (finally) but I have a question. > > Is it supposed to be a continuous tone or is it cyclical? I have the > > pitch and timbre matched up(although it p

Re: [Flightgear-devel] Stall horn question

2001-11-27 Thread John Check
On Wednesday 28 November 2001 1:30 am, you wrote: > I just committed a new stall horn sample (finally) but I have a question. > Is it supposed to be a continuous tone or is it cyclical? I have the pitch > and timbre matched up(although it plays back at lower pitch inside FGFS) > but for now it lac

[Flightgear-devel] Stall horn question

2001-11-27 Thread John Check
I just committed a new stall horn sample (finally) but I have a question. Is it supposed to be a continuous tone or is it cyclical? I have the pitch and timbre matched up(although it plays back at lower pitch inside FGFS) but for now it lacks the attack envelope of the FS98 sample from simphonics