In article ,
(BUFDRVR) writes:
If it's qn excess thrust issue, than that would weight it even further
into the "Yes, sure the B-1 can do an Immelman" side. Of all the
things the B-47 didn't have, thrust

Remember, the B-47 did their immelmans from high altitude (and entered from a
dive obviously), the Afghanistan Bone would be entering from straight and
level, thus it becomes an excess thrust issue.

Are you sure about that? Remember, the wing loading's a lot higher
than that of the B-52. Not a whole lot of excess G at altitude.
They did use Immelmans as an escape maneuver when they decided tht low
level was the way to go, and that the best way to do that was with a
LABS delivery. It didn't last long though, In the first 3 months that
they tried it in the field, they lost 3 airplanes due to structural
failure. They modified their technique to a low-level ingress with a
pop up to about 10-12,000' to drop a drogued weapon, and a diving turn
away immediately after weapon release.


Well, fly around the pattern trailing a parachute is one...
Tobogganing behind an overstressed KC-97 would be another.


Cruising around, fully loaded (albeit a smaller load than a BUFF or Bone) at
40K+ and .90 mach. Doing an immelman at high altitude (not possible for a
BUFF...maybe for a Bone, but not from 30K+).


Well, I'll admit I'm a little on the young side to have flown a
B-47. (But I was at Pease when the last one in service was flown in
to be a gate guard - U.S. Navy markings, and a North American
Autonetics crew. That was 76 or 77 or so) But I've known plenty of
peolple who have. For a loaded B-47, 40 Kft was about all you'd get.
Placard Limits are 425 KIAS up to Mach 0.86, meeting at 'bout 17.500'
I could run a o.86 at 36,000 (tropopause), but that was about it.
The 425 KIAS limit was pretty definite. Aince the wings were so
flexible, the ailerons would twist the wings, reducing, and eventually
reversing roll control. 425 KIAS was the point where you didn't have
any roll control.


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