

http://ysflight.in.coocan.jp/main/e2014.html#20140316
Exciting stuff!Soji Yamakawa wrote:If you watch F-22 demonstration in an airshow, it is nothing but impressive. I want to do it in YSFLIGHT. To do it, I need to enable post-stall maneuvers in YSFLIGHT. Basically, I'm a big air-show fun. So, I want to re-create the excitement of air shows in YSFLIGHT.
Still I need to do something to smooth out transition from normal maneuver to post-stall maneuver, but at this point, I can do something like the following flight record.
[DOWNLOAD F-22 Post-Stall Demo Flight Record]
Smooth transition is one of the remaining problems. If you look at F-18's high-alpha pass, it smoothly enters the maneuver. I think it is possible because F-18's strake prevents sudden loss of lift during stall. Probably the wings of F-18 smoothly lose lift beyond the critical angle of attack. In YSFLIGHT currently makes lift zero as soon as the wing reaches the critical angle of attack. I probably need to make some stall patterns.
Also, I am adding more realistic propeller simulation. I want to add Cessna 172. To do so, I want my engine to react more realistic. New realistic propeller simulation is now tested on Piper Archer and P-51 Mustang. In the next version, the .DAT file can pick between realistic propeller simulation or simplified (current) propeller simulation.
The problem with this realistic propeller simulation is that the auto-pilot cannot deal with the time delay and miserably fails. It looks nearly impossible to manually set up control parameters. So, I am now using a concept of machine learning to pick a reasonable control parameters. The technique I am implementing apparently is called Least-Square Monte-Carlo. So, it looks to be one step before machine learning, but should be a good learning opportunity for me. I have written a code to make sample training data for air-speed controller. I'll see if this idea works or not soon.
In the future, I don't know how future it is, I want to make an AI that learns from the player's air combat. Then, you can exchange your AI and let it fight an air-combat against your friend's AI. Well, it's one of the dreams I have, but I am still slowly learning the machine learning. It won't be in the near future.
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