Engine starting

[expat]

FS2004 seems to have unrealistic starting for many gas turbine aircraft, but for piston and turbo prop all seems ok. During start of any Boeing aircraft, it makes no difference who's aircraft it is stock or some of the fine 3rd party, the engine starts and then two things happen.
Firstly, the engine rpm rockets up and peaks between 90% to 95% and then decreases to ground idle and with this, if the brakes are not set, a violent swing in the oppersite direction and a small amount of rolling (I know that starting without brakes does not happen in the real world, unless you are flying an aircraft that doen not have electric hyd pumps, also in the real world we have chocks)
I have tested a lot of different aircraft. Mainly it is a Boeing problem..
747 peaks N1 95%, N2 90%, however no swing.
777, peaks N2 85%, swings
Trident, peaks 90% an swings. This aircraft has fuselarge mounted engines. Turing will never happen.
Orion, engines ok, but start 1 or 4 and aircraft also turn violently.
737 (my bench mark, I work on them)rockets up and peaks at N1 80%, N2 90% and a violent turn. Also starts to taxi.
So my question is, does anyone know how to and which cfg files I could modify to make a start more realistic. Also how to stop swinging. Some aircraft will do it with full oppersite rudder/nose wheel stearing.
Lastly, possibly a limitation of FS2004, the rudder and nose wheel steering are the one of the same. Is it possible to separate them in FS9.  Sometimes with a take off run a small correction in drift gives massive nose swing due to both acting at the same time.
I realise this is a lot to ask, but can anyone help.
Thanks

Matt

[expat]

Come on Guys,and Girls

63 views and no one has a word to say?????????????????? :-/

Matt

[|| Andy ||]

Microsoft didnt do their research eh..
Urmm.. i spose this is a hard coded problem, so i doubt theres any

help

[alrot]

I got one thing to say first all the boeings by default they too away from the real dinamics of flying from the real ones,IMAGINE after touchdown you can stop a 747 just with a wheel brakes like a car...just to mention one thing from many many  other things,the thrust reverse seems doesn't work,airbrake after landing either,the only thing that stop that jumbo are the wheel,if you set full flaps at 180 knots(at moment of landing) you get in stall,in real life this giant can stand at 150 ,140 full fuel passenger,and bagdage for touchdown,im working in my own version modifing in arcraft file *.cfg and *.air to make more realistic 777 &737 default too
imagine the details of fuel waste, turboprop mix,

I had the same issue ,when a friend from here name Nexus make me realize that ,now with a copilot friend
he flyes an embraer but he got experience in heavys and a lot reading of every one of them im trying to made them more realistic,

I even made my virtual cockpit with yoke, thrust console,pedals,buttom etc,the-ex-pat have you visit here virtual cockpits,if you dont take a looks some beatiful works there,mine appears too

  cheers

[C]

Hello Matt,

I can't say I've ever come across this myself. I'd expect it to ignite about 20%, and zoom to 50ish% and than back to idle...

On the taxing point, i find with fs if you want to amke small adjustments on the runway just dab the differential brakes...

Charlie

[jrpilot]

Jet aircraft almost if not always start their engines with breaks on...

[expat]

Hi Charlie

What we would expect and sometimes what we get in FS9 are two very different things. Give it a try on any Boeing 7 series and see what happens.

Jrpilot, starting with brakes set and having hydraulic power to the brakes are two very different things. If you only have engine driven hyd pumps available,(maybe your AC or DC pump is US but IAW your MEL you may be able to carry on flying for a time peroid from 1 day to 10 days depending on item restriction), until the engines are at ground idle you will have nothing. In general parking brakes are not that great on aircraft.  Example, set the parking brake on a BAe 146, you will have pressure to  the brakes for about 10 mins on a good day, after that the pressure has "leaked" and you need those chocks, a 737 you get a good 8 hours, ATR, 6 to 8 hours and a CRJ a couple of hours.  However, this is getting away from the point with what happens in the real world, and what happens in FS9.  The point being if you did start your 737 without the brakes on, we are not production line robots, the engine will not peak at 90% on start and the aircraft swing 45% right or left depending on which engine you start.