dogon11 Posted July 15, 2012 Share Posted July 15, 2012 I want to make the Turbojet engine give me a maximum altitude of 24 kilometers. What would I need to change in the CFG file? Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 You\'d want to adjust the airflow parametersHere is the CFG section i\'m referring to.optimalAirflow = 60lowerAirflowLimit = 10upperAirFlowLimit = 300Change the lowerAiflowLimit to something around 5, i think, and optimal airflow to something around 30. You\'d need a bit of testing (OK, a lot) to fine-tune the altitude limits, but this is the basic idea. Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 You\'d want to adjust the airflow parametersHere is the CFG section i\'m referring to.optimalAirflow = 60lowerAirflowLimit = 10upperAirFlowLimit = 300Change the lowerAiflowLimit to something around 5, i think, and optimal airflow to something around 30. You\'d need a bit of testing (OK, a lot) to fine-tune the altitude limits, but this is the basic idea.Okay, I\'ll begin testing momentarily. Results soon. Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 Awesome, I\'m mostly guessing on the suggested edits, so it\'d be interesting to see what exactly they do, for future reference. Happy testing! Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 Awesome, I\'m mostly guessing on the suggested edits, so it\'d be interesting to see what exactly they do, for future reference. Happy testing!I also modified maximum thrust and exhaust speed. Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 Would you like any assistance in testing? I\'ve got nothing better to do. Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 Would you like any assistance in testing? I\'ve got nothing better to do.Sure. Lemme attach the part. Wait, am I allowed to do that? Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 Just tell me what you\'re editing and give me a copy of your test craft. I\'ll test a different range of values Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 Just tell me what you\'re editing and give me a copy of your test craft. I\'ll test a different range of valuesI\'m editing the TurboJet\'s maximumThrust, OptimalAirflow, LowerAirflowLimit, and maximumExhaustSpeed values.Currently, they sit like this:maximumThrust: 175maximumExhaustSpeed: 1900OptimalAirflow: 30LowerAirflowLimit: 4It just ran out of power at 23,500 meters for me.I also renamed the engine to HybridTurboEngine.Dual engines, it likes to stay around 700m/s, just what I want. Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 Okay, since you\'ve basically achieved your primary goal, I\'ll test out other modifications of these parameters for future interest. I\'ll try out optimal airflow at 0 and LowerAirflowLimit at 0 first, to see if it enables these to work in space. Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 Okay, since you\'ve basically achieved your primary goal, I\'ll test out other modifications of these parameters for future interest. I\'ll try out optimal airflow at 0 and LowerAirflowLimit at 0 first, to see if it enables these to work in space.Possibly, except this engine hovers at 20,000meters. See where 2 and 1 put you. Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 Tentatively, it seems that with optimal and lower both at 0, the engines don\'t function in atmo at all. Space testing is pending. This might be useful for ion engines, no? Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 Tentatively, it seems that with optimal and lower both at 0, the engines don\'t function in atmo at all. Space testing is pending. This might be useful for ion engines, no? Quite possibly. I\'m going to retry with airflow of 2. Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 I did a straight-up test of optimal 30 and lower 1 and it stopped accelerating at 25000 KM Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 I did a straight-up test of optimal 30 and lower 1 and it stopped accelerating at 25000 KMI\'m actually looking to use this engine in a MiG-25 recreation.2 should put it at 23km, which is perfect. Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 It appears that we\'ll need RCS for such high altitude flight. Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 0 for both parameters does not work in any case. It seems that the 'efficiency' parameter in the context menu kills this. Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 0 for both parameters does not work in any case. It seems that the 'efficiency' parameter in the context menu kills this.Try maximum intake power. That might help. Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 Will do. Link to comment Share on other sites More sharing options...
dogon11 Posted July 16, 2012 Author Share Posted July 16, 2012 Changed thrust to 180, optimal airflow to 20, intake power to 225, and minimal airflow to 2. Flew at 10 degrees nose up, aircraft reached max altitude of 26km. Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 Adjusted intake power, minimal, optimal, and max airflow all to 0. Vacuum engine is a bust. Link to comment Share on other sites More sharing options...
semininja Posted July 16, 2012 Share Posted July 16, 2012 You need to stretch out the curve so that the peak efficiency is at zero pressure.Set the lowerAirflowLimit to something like -100, optimal to 0, and upper to something exorbitant like 1000. Leave everything else stock and see if that works. Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 Ah, that makes sense. I\'ll give it a try Link to comment Share on other sites More sharing options...
Thobewill10 Posted July 16, 2012 Share Posted July 16, 2012 That worked! Thanks! Link to comment Share on other sites More sharing options...
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