Vivian Meazza wrote:
> Gerard
> 
> 
>>>With Melchior's valuable help I have developed a nasal simulation of the
>>>Boost Control and Boost Control Cutout for the Hurricane. This should be
>>>committed to cvs shortly. When a preset boost value is exceeded, the
>>
>>Boost
>>
>>>Control acts to reduce throttle opening. This action can be overridden
>>
>>by
>>
>>>the Boost Control Cutout which allows maximum boost. The output of the
>>
>>Boost
>>
>>>Control is smoothed by a low-pass filter selected by Melchior. You will
>>>notice an overshoot and some lag if the throttle is opened quickly.
>>>
>>>To make it work a patch (for cvs/head) is required to YASim - attached.
>>
>>A
>>
>>>new attribute 'supercharger' has been added to the aircraft config file.
>>>When this is true, the attribute 'wastegate' no longer controls the
>>>supercharger output. If you want to try the update to the Hurricane, you
>>>will need to apply this patch. It will not adversely affect any other
>>
>>YASim
>>
>>>model, so far as I can tell.
>>>
>>>Both the nasal and YASim patch are temporary; both will require
>>
>>reworking
>>
>>>when Andy comes up with his revision of YASim to include the new
>>>supercharger code.
>>>
>>>Any testing would be welcome, although Melchior is doing his best to
>>
>>break
>>
>>>it already! In particular any feedback on any adverse effects on other
>>>models would be good.
>>>
>>>Regards,
>>>
>>>Vivian
>>
>>Do we have the same project, on JSBSim ?
>>What must be done for it ?
> 
> 
> I'm not sure where the supercharger stuff is at on JSBSim. Certainly doesn't
> have a Boost Control Cutout. I'm not working on it - I've only just begun to
> understand YASim. One thing at a time :-). I'm not aware of any requirement
> in JSBSim 
> 
> Right now I've only researched the RR Merlin in any detail. Enough for our
> current range of supercharged models. I don't know if Josh Babcock needs
> anything special for the B29.
> 
> V.
> 
> 
> 
> _______________________________________________
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> 2f585eeea02e2c79d7b1d8c4963bae2d
> 

I had done some research on the R-3350s, but it was a while ago. I do
know that the turbos are controled by an amplified rheostat, which I
think controls the the waste gate.

Josh

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