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Making a turbojet function like a rocket

gecko

gecko

Charter Member
Hi all,

My latest project is working on the FM for a Me 163 for CFS3. CFS3 does not support rocket engines, so I have set it up with a turbojet engine. Unfortunately, the turbojet doesn't behave quite like a rocket engine. I was wondering if there was a way to reduce some of the differences. Specifically, I want the engine to behave exactly the same at all altitudes and airspeeds. Currently, fuel consumption drops off considerably with altitude and N1 rpm varies with both airspeed and altitude. I am assuming total thrust is also behaving similarly to N1 as well, though I have no means of measuring this directly. I have looked through the .air file and experimented with the turbine related tables, but I haven't had any success so far. I am well out of my depth working with turbine stuff, so any help is much appreciated.

Daniel
 
I think that this has been tried with some success but not alot. I would look at Tom Sanfords work on the SAM missile. You can find it at SimV.

look through these...

http://simviation.com/1/download-file?file=aa2_ai.zip&fileId=3381

http://simviation.com/1/download-file?file=SA-2.zip&fileId=3317

maybe from them you can figure it out. I do know that there is a thrust and MACH limit that CFS2 will not go past. Which is one reason why many attempts at a Vietnam expanion have been dropped. As far as CFS3 goes, well it may or may not have the same issue.

Let me know if you find anything.
 
Well at least I'm not the only one to bang me head against this issue. I've looked through them, but so far no luck. I don't really even understand how the different tables relate to one another. If I could figure out all the ways that N1 rpm is affected I might be able to get somewhere.
 
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