Have just tried out my new mosquito and was less than surprised at the engine cutting under any negative g.
This was a problem with with early merlins and was partially solved with a controlling calibrated
orifice and later by bend ix and Rolls Royce pressure carburettors so it simply should not happen
Having set up a several simple circuits of Manston in the P47 I was amazed to see constant main bearing failures after throttling back for a few seconds due to a slightly high approach and side slipping the aircraft.
I am aware the R-2800 can sustain damage due to the airflow driving the propeller due to the position of the main bearing oil feed , and indeed the airliner crews would handle the throttles to avoid this as the units carried around a 2000 hour life or more . A world war two fighter engine would not get anywhere near this figure and the power unit would almost certainly be removed long before any bearing wear became apparent .
As an aircraft propulsion engineer of over 40 years experience it would appears to me that your programmers are taking the manufacturers engine guiding figures as the point of almost immediate failure when they are mostly a guide that the danger of wear may start to lower engine life ,
If the R-2800 had displayed any where near this level of unreliability would the American military
have been able to fit versions in so many of its fighter aircraft which in combat will almost certainly face violent throttle handling and misuse.
I feel there is no need to dig too deep into technical details but if anybody is interested I recommend Graham Whites book R-2800 Pratt & Whitney's Dependable Masterpiece which details the development problems and engine versions in minute detail it contains 718 pages however I feel the programmers only need to read one word on the cover Dependable the DCS P47 is a wonderful simulation including the engines starting and handling but it seem to me that it is let down by a massively over simulation of bearing failure.
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