(Peter Stickney) wrote in message ...
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...

Maybe so, but the point here is that it was the US experts that asked
the Germans what they believed to be the future and why. The Germans
did explain that the axial-flow engine would prevail.
Using your explanation above it makes the US and Britain look foolish
since they continued with centrifugal engine production. If they had
knowledge of axial superiority and the materials, time, money, and
skill to build them then why not?

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.

Thats BS. Had the Germans had the materials available that the Allies
did, more time, and no bombardment they could have proceeded with much
greater designs in both jets and rocket powerplants.

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).

Refer to earlier post, the DB 109-016 was tested in March 1945 at
28,652 lb thrust- the world's greatest jet engine of the time.

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.

Galland has a right to his opinion- all jet flyers do. There are those
today who would pick foreign aircraft to fly other than our own. But
then again Galland only flew the Me-262... he never flew a Vril-7 or
Haunebu disc, did he? What do you think his comments would have been
if he flew those craft?

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.

Doesn't mean a thing. Of course they would experience the same problem
the Germans did because of the lack of stronger materials in the
engines. Had they removed the synthetics and weaker materials and
replaced them with what the Germans had wanted to use in the Jumo 004
then they would have gotten excellent results.
BTW, Wright's flight handbook for the Me-262 dated 1946 (an official
document) claims the Me-262 could do Mach 1 in a shallow dive. So who
cares about your engine flame-out comments?

Rob