In article ,
(ANDREW ROBERT BREEN) writes:
In article ,
Keith Willshaw wrote:

"Erich Adler" wrote in message
We could discuss Allied centrifugal jets that lost out in the long
run. German engineers told them that in 1945.

Uh, no. You're thinking "Metropolitan-Vickers in 1943"

Or GE in 1941 (TG-100/T-31)
Or GE in 1944 (TG-180/J35)
Or Westinghouse in 1943 (X19/J30)
Or...

Axial compressors, and their potential benefits, were well known long
before with Whittle or von Ohain ran their engines. In fact, one of
the reasons that the RAF was so reluctant to find Whittles'
experiements was becasue the Air Minitry's tame Gas Turbine expert,
Griffith, was so enamoured of his own over-complicated, unsuccessful
axial complressor designs that he refused to believe that compressors
could, in fact, be that simple.

American and US companies were already working on axial flow designs
before the end of the war. They knew very well that the centrifugal
design had a limited scope for development but they also knew
it would be easier to produce a reliable engine that way. This
turned out to be correct.

And at twice the power of anything the Germans ever achieved. The J33
and J35 both ran in early 1944, The Rolls Nene, developed as a
response to the J33, ran in late '44. Westinghouse was running the
J30, mentioned above, the J32 9.5" diameter missile engine, and the
J34, and Metrovick had the Beryl in production adn were working on the
Sapphire by the time anyone on the Allied side got to touch a German
engine.


Yep. Metrovick had a very tasty axial-flow engine (the basis of
Armstrong-Siddeley and later Bristol-Siddeley engines to come)
flying in late 1943. Not a bad engine at all. And a fighter
powered by two of 'em was testing before the end of the war
(intended for pacific operations).

Bull**** , the Jumo 004B was a typical first generation engine in terms
of performance with woeful reliability and had poorer performance
than the Derwent. This is of course why the Soviets used the
RR centrifugal engine in the Mig-15

And why one Adolf Galland - who flew both - rated the Meteor as
a better fighter than the 262. It had *much* better engines.
I'll grant that he did say the 262 might have been better if it
had Derwents, but it would be interesting to try and mate the two.

An interesting noe in the report of U.S.A.A.F testing of war prize Me
262s at Freeman Field, Ohio, after the war is available on the Defence
Technical Information Center site:
http://stinet.dtic.mil/

One comment in the report was that they did no specific single-engine
testing - They got plenty of single-engine time due to engine failure.

--
Pete Stickney
A strong conviction that something must be done is the parent of many
bad measures. -- Daniel Webster