"Maxwell" wrote in
:


"Bertie the Bunyip" wrote in message
.130...
"Maxwell" wrote in

A 1g barrel roll can be done, but the required trajectory of the
aircraft is not going to be one that is necessarily eye pleasing for
ground demonstration purposes.

Nope. the only thing you can do at 1 G is straight and level flight.

You can keep positive G around a barrel roll, but not 1 G


If you enter nose high (enough), and exit nose low (enough), you
should be able to maintain close to one g. But then would it still be
called a barrel roll.

mmm, nope. Not even close., If you fly it really accurately you might be
able to keep the entry end exit under two g, but I doubt it. If you fly
it very slack, you'll go, at best, Zero G over the top and probably
negative.
To keep positive G you need well over tow at entry and exit, to keep a
little over one as you pass 90deg, then you can probably keep a bit over
a half a G over the top and then pretty much the same down the other
side.



I'll have to admit, I've never specifically watched the g meter while
doing so, but if you are sloppy enough, it seems prettly close.

I have watched it. Quite a lot, in fact. I've been hearing this story
since I've been flying, It was wrong back then and it's wrong now. Even
if you dump the nose as you suggest on the way down, you're stil going
to have to pay for it eventually...... And on the way up, no way.




Bertie