>From: Dave Culp <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED],FlightGear user discussions
><[email protected]>
>To: FlightGear user discussions <[email protected]>
>Subject: Re: [Flightgear-users] Jet engine model
>Date: Thu, 15 Jun 2006 11:44:20 -0500
>
>On Thursday 15 June 2006 07:27 am, Maria Vega Ramirez wrote:
> > Hi,
> > I´m modeling an UAV with JSBSim. It has a jet engine and I´d like to
>know
> > how can I introduce some of its parameters as the Delay of this engine
>or
> > the table Thrust-rpm.
> > I´ve been looking up web pages related to this, like
> > http://jsbsim.sourceforge.net/JSBSim/classJSBSim_1_1FGTurbine.html or
> > http://jsbsim.sourceforge.net/ but I haven´t found what I really
>need.
>
>
>The engine's delay, or "spool-up time", is controlled by the <bypassratio>
>number. Increase the <bypassratio> number to increase the delay.
>
>The thrust table called "MilThrust" contains the values of thrust versus
>mach
>and altitude. This is for 100% throttle. The turbine model causes thrust
>to
>vary with rpm-squared for partial-throttle operation.
>
>
>Dave
So, if the engine´s delay is 5seconds, how can I know the bypassratio number
for this spool-up time?Is there any law about this?
Thanks
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