"Keith Willshaw" wrote in message ...
"alfred montestruc" wrote in message
om...
"Charles Talleyrand" wrote in message
...
Lets suppose you get to give a single new airplane design and a single
prototype
to a participant of World War One. You can offer the Austro-Hungarians
the
design for a B-52 if you wish. However, that might prove a
manufacturing
challenge to them (and one can only wonder about their supply of jet
fuel).

Your goal is to change history. You can hope for a German victory or
just that the
Allies win faster. It's up to you.

So, what design do you offer, remembering that this design must be
manufactured, fueled,
and armed by the natives?

Probably a Japanese Zero. The Zero could land and take off on a
relitivly short grass runway as long as the ground is not soft. The
engine should be within their capacity to build, and that is the main
thing, a late 1930's evolved internal combustion aircraft engine with
lots of power.


It wasnt, the engine was at least 2 generations beyond
anything achievable in 1918.

Hogwash.

Any IC engine that I can give a WWI machine shop the plans for that
does not use late 20th century solid state electronics can be build in
WWI so long as the alloys specified are available. Very little
changed in basic machine shop technology from the lat 19th century
till the introduction of electronic chips.

The issue is were the alloys used in the engine available in the
1914-1918 era, or were reasonable substitutes available. If yes, then
it can be built.

Point of fact, I am very sure that alloys needed either existed, or
reasonable substitutes did.

Note that commonly in design of machines where the engineer wants to
allow the potential builder to substitute materials when that
originally specified is not available or the price rises, will spec
the required material properties like hardness, and yield strength and
minimum percent elongation in a tensile test, a range of chemistry, a
specification of acceptable processes (forging, casting, hot or
cold-rolling), and sometimes Charpy impact tests and sometimes more
exotic tests to prove the quality of the material.

Sometimes one goes whole hog and specifies the chemistry of the steel
and tolerences on that chemistry, and all the processes used to make
it from the steel mill on.

I work as a mechanical engineer and have designed many machines, and
reviewed the designs of many more.

Basically your statement is flat wrong, given the plans for the engine
and material specifications for the steels and other materials used in
the engine, which would fit in a shoebox and weigh very little, any
industrial society in WWI era could build them.