> It's nice to be able to have backout routines for interpolation
> tables, as well, which can be extremely helpful in initialization
> code. For tables up to 3d with fixed independent indices (is this
> what you meant by 'grid', or did you mean fixed intervals?), this is
> pretty straightforward.
Adam Dershowitz wrote:
> Martin: Yes, in the US it is often done in single engine airplanes. There
> is a lot of single engine IFR flying here, so the rating is very useful on
> its own, rather than as a step to other ratings. It really increases the
> utility of a airplane greatly when a few c
Am Freitag 22 April 2005 05:07 schrieb Dave Perry:
> I passed my instrument rating oral and practical (check ride) this
> afternoon. Five hours including the oral and ride.
Congratulations Dave.
> Thanks to the entire FlightGear team for a great simulator with real
> world applicability!
I real
Dave, Congrats! The instrument rating is a particularly difficult rating,
but is also a very useful rating to have.
Martin: Yes, in the US it is often done in single engine airplanes. There
is a lot of single engine IFR flying here, so the rating is very useful on
its own, rather than as a st
> Probably several. YASim has one for doing interpolation of standard
> atmosphere parameters, and I'm sure there's a similar engine in the
> JSBSim code, which depends on tables extensively in its configuration.
Yeah, that's something that could be a project in itself. There are a few ways
to d
> Yeah, that's something that could be a project in itself. There are a few
> ways to do
> tables that I know of. JSBSim does "gridded" tables up to three independent
> variables. I'd
> like to extend that to ungridded tables of "n" dimensions. Maybe there's an
> algorithm
> around somewhere for
> The real data is series 1, but only up to rpm-normalised = 1. For values
> above 1, it's just a continuation by eye of the data.
>
> (See http://www.turbotechnics.com/supercharger/expo.htm Note that max power
> is at 6500 rpm, and that the supercharger output is nearly flat at 7000
> rpm.)
>
>
Andy Ross wrote:
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:flightgear-devel-
> [EMAIL PROTECTED] On Behalf Of
> Sent: 22 April 2005 15:19
> To: FlightGear developers discussions
> Subject: Re: [Flightgear-devel] YASim turbo/supercharger issues
>
> Vivian Meazza wrote:
> > y
Not sure if I have pointed this out before or not
http://www.cert.fr/CERTI/
Currently Unix only but HLA would make a great addition
to FGFS
Norman
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Drew wrote:
> IMHO, it's best to use interpolation tables rather than equations if
> you're trying to curve fit empirical data.
Not in this context. The data here isn't being used to model a
specific engine, but to provide sane parameters for all
(super/turbochared) engines. The performance and
I wrote:
> Finally, there's now a slight esoteric bind() function
Which sounds weird, I know. But here's an application:
Languages like Perl and Ruby have a really useful syntax (which they
got from the shell) for "interpolating" variables into strings, so
that for simple output you don't have t
Heh, it's been a fun day. I woke up with one of those great insights
where you realize that something you thought was difficult just isn't.
In this case, it was the lack of "+=" syntax (and -=, *=, /= and ~= of
course) in Nasal. They're checked in now.
I also threw in a forindex(i; list) loop sy
Andy Ross:
> > If you do mean this equation then I can certainly live with that. If
> > not, I'll need to put my thinking cap on ... I've updated the
> > graphical representation here:
>
> Remind me again which one of these is the "real" engine data, and what
> the source is? The only line on th
Hi people,
I intend to use FG as a "viewer". I have an application that manipulate
aircrafts, boats and more, and I'd like to see them living in a 3D world.
I saw that in FG there is an AIManager that can do what I want. If I've
understood its function, it manipulates AIBase objects which have a
Am Freitag 22 April 2005 18:33 schrieb Martin Spott:
> Adam Dershowitz wrote:
> > Martin: Yes, in the US it is often done in single engine airplanes.
> > There is a lot of single engine IFR flying here, so the rating is very
> > useful on its own, rather than as a step to other ratings. It reall
> I intend to use FG as a "viewer". I have an application that manipulate
> aircrafts, boats and more, and I'd like to see them living in a 3D world.
> I saw that in FG there is an AIManager that can do what I want. If I've
> understood its function, it manipulates AIBase objects which have a
> pos
Vivian Meazza wrote:
> That got me going. Are you trying to calculate the natural log of a
> negative number (rpm_norm - 1)? Isn't that a complex number? Did you
> mean:
Yes, typo. Sorry.
> If you do mean this equation then I can certainly live with that. If
> not, I'll need to put my thinking c
Vivian Meazza wrote:
> y = -0.25x3 + 0.15x2 + 1.11x
>
> Thinking about the over-speed situation overnight, the Merlin was
> allowed to go to 3600 rpm for brief periods, and even then damage to
> the engine was possible. This is a normalised value of 1.2. The K
> Series will go to 9000 (don't try th
Dave Perry wrote:
> I passed my instrument rating oral and practical (check ride) this
> afternoon. Five hours including the oral and ride.
Wow, this is great. Hmmm, I feel I'm getting envious ;-)
> [...] The examiner said I did an outstanding job given the
> conditions. I flelt like I was a
Dave Perry wrote:
I passed my instrument rating oral and practical (check ride) this
afternoon. Five hours including the oral and ride. Boy was I glad I
had done many approaches with the turbulence turned up as all the
approaches were in moderate turbulence today with 20 gust to 35 kts and
wi
Andy Ross wrote:
> Vivian Meazza wrote:
> > I used the power form because it is easier to read, but if the other
> > form produces a performance advantage, then of course we must use
> > it.
>
> It's actually not so much about performance, really. Readability can
> mean different things. The pr
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