On Saturday 08 December 2012 12:12:23 Ron Jensen wrote:
> I took a quick look through the FGData Aircraft directory today and came up
> with a list of some 27 JSBSim piston engines that still seem to be using
> either the old aeromatic default values for idle manifold pressure (minmp)
> or suspicio
On Tuesday 11 December 2012 13:49:51 Eric van den Berg wrote:
> So it is kind of modelled like an air pump. Interesting method.
Piston engines are basically air pumps.
We currently calculate power by dividing the mass fuel flow by the
user-entered bsfc multiply by correction factors for mixture
On Tuesday 11 December 2012 13:49:51 Eric van den Berg wrote:
> So it is kind of modelled like an air pump. Interesting method.
Piston engines are basically air pumps.
We currently calculate power by dividing the mass fuel flow by the
user-entered bsfc multiply by correction factors for mixture
So it is kind of modelled like an air pump. Interesting method.
BTW
p0 =101325 Pa
R = 287.05
Cp_air = 1004.68
gamma = 1.4
Handbook of Aviation fuel properties, third edition:
net heat of combustion of AVGAS, all grades : min. 43.5 MJ/kg, 44 typical
density of AVGAS: 710 at 15degC
C_p_AVGAS = 2.06
On Tuesday 11 December 2012 09:46:10 Eric van den Berg wrote:
> I see.
> Looking at the code (I think) I can see you are trying calculate the
> pressure losses in the injector/throttle valve, "airbox" and inlet tubes.
> Using throttle position and engine speed (was expecting cylinder
> displacement
nics.com
> To: flightgear-devel@lists.sourceforge.net
> Date: Tue, 11 Dec 2012 06:20:23 -0700
> Subject: Re: [Flightgear-devel] JSBSim Piston Engine Idle
>
> On Tuesday 11 December 2012 00:55:35 Eric van den Berg wrote:
> > Ron,
> >
> > From experience: the lyco I
On Tuesday 11 December 2012 00:55:35 Eric van den Berg wrote:
> Ron,
>
> From experience: the lyco IO540 idles at 14-15 inHG, 900RPM (MT-prop with
> P-880-xx governor)
>
> Eric
>
Thanks Eric,
The JSBSim piston engine model is missing something, probably Mach effect
through the intake valve, so m
Ron,
>From experience: the lyco IO540 idles at 14-15 inHG, 900RPM (MT-prop with
>P-880-xx governor)
Eric
> From: w...@jentronics.com
> To: flightgear-devel@lists.sourceforge.net
> Date: Sat, 8 Dec 2012 12:12:23 -0700
> CC: jsbsim-de...@lists.sourceforge.net
> Subject: [Flightgear-devel] JSBSi
I'd be grateful for an update of the Dragonfly and the ogeL. The
Dragonfly's configuration was a wild guess, and only very vaguely based
on real numbers. ogeL's engine is by definition just fantasy ;-)
Thanks,
Torsten
Am 08.12.2012 20:12, schrieb Ron Jensen:
> I took a quick look through the FG
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