Stalls and Thoughts

Dudley Henriques wrote in
:

Bertie the Bunyip wrote:
Dudley Henriques wrote in
:

Bertie the Bunyip wrote:
"Blueskies" wrote in
. net:

LeVier did a lot of the high mach number dive tests in the 38,
and there definitely was a compressibility problem, mach tuck;
the
whole
works. I know they added speed brakes but not sure at exactly
what stage. The engine rotation switch was early on in the
program according to Ethell; I believe in the YP38 stage before
the first production run. If I'm not mistaken, the high mach
dives came after the switch but I'm not at all certain of that.

--
Dudley Henriques
All the -38s sold to England had same rotation direction engines
on both sides all the way through. Just another odd thing...


Are you sure about that?


Bertie
I heard the same thing. The Brits raised hell about what they
considered
a high degree of possibility for unnecessary maintainence due to the
handed engines. On the practical side, the Brits had ordered a ton
of P40's which used the V1710 Allison with a right handed prop. The
word
we
got was that the brits wanted the Allison's on the 38's to be
interchangeable with the P40 to cut down on cost.



Well, that's reasonable. Never heard that before. Could be an urban
legend based on one photo of an airplane field kitted with two RH
engines. A bit like the Fokker DR1 that got an odd aileron and
started a legend that they all had one smaller than the other to
compensate for torque.


Bertie
Possible?? Torque correction IS in roll and not yaw as is the common
belief :-)


Oh the things had torque issues alright, but some nerd of an historian
has proven that there was only one DR1 with mismatched ailerons. The
eraly ones had one size and the later ones had another and a field
repair resulted in the one with two odd ailerons. Since it was a good
pictiure showing them clearly and someone did a detailed drawing basd on
it, it got lodged in folklore. There were airplanes that had larger
wings n the left for this purpose however. Ansaldo, for one.


Bertie