In article ,
phil hunt wrote:
On 18 Sep 2004 16:05:44 +0100, ANDREW ROBERT BREEN wrote:
A related issue was maintainance (this for multi-engine types): if you
wanted to avoid torque effects you had to have "handed" engines, turning
in different directions on each side (like the Lockheed Lightning or the
De Havilland Hornet), or you put up with the torque effects and had the
mainatainance/suppy gain of n identical engines.

Couldn't you use identical engines, but mount them back-to-front on
one wing?

Tractor on one wing, pusher on the other? Could be done, I dare say,
though the nacelle design would be interesting to avoid asymmetric
drag or thrust.. Can't help but feel that contraprops might be easier!

--
Andy Breen ~ Interplanetary Scintillation Research Group
http://users.aber.ac.uk/azb/
"Time has stopped, says the Black Lion clock
and eternity has begun" (Dylan Thomas)