Zero G profile

mike regish writes:

Uhh..hate to burst your bubble again, but -1 g would have you straining at
your seatbelt with a force of 1 g.

+1 G plus -1 G equals 0 G. In the zero-G state, you're accelerating downward
at 1 G, thus -1 G vertically. Since the acceleration due to gravity is +1 G,
they cancel, and the result is weightlessness.

If you're not wearing one, you would be
exerting 1 g against the roof.

You'll want to heavily pad the entire cabin, anyway, since the return to the 1
G state (and often higher than that, since you must pull out of the parabola)
can be abrupt.

--
Transpose mxsmanic and gmail to reach me by e-mail.

"Mxsmanic" wrote in message
...
mike regish writes:

Uhh..hate to burst your bubble again, but -1 g would have you straining
at
your seatbelt with a force of 1 g.

+1 G plus -1 G equals 0 G. In the zero-G state, you're accelerating
downward
at 1 G, thus -1 G vertically. Since the acceleration due to gravity is +1
G,
they cancel, and the result is weightlessness.

You're accelerating downward at exactly 1 g, or 32 feet per second per
second. Zero g is zero g.


If you're not wearing one, you would be
exerting 1 g against the roof.

You'll want to heavily pad the entire cabin, anyway, since the return to
the 1
G state (and often higher than that, since you must pull out of the
parabola)
can be abrupt.

My seat belt can hold me in quite nicely at zero g. Even at -1 g, which
would have me exerting a 1 g force against the belt. I'm not flying the
freakin' vomit comet. I'm in a freakin' Tripacer and we're all strapped in.

Again...1 g is straight and level. Zero g is downward acceleration at 32
feet per second per second. -1 g is downward acceleration at 64 feet per
second per second.

mike (I've done it already...in a real plane...just wanted to know how to do
it longer...which I now know how to do thanks to info from a real pilot)
regish

P.S. I don't think I'm going to defend you against your flame club anymore.

Mxsmanic wrote in
:

mike regish writes:

Uhh..hate to burst your bubble again, but -1 g would have you
straining at your seatbelt with a force of 1 g.

+1 G plus -1 G equals 0 G. In the zero-G state, you're accelerating
downward at 1 G, thus -1 G vertically. Since the acceleration due to
gravity is +1 G, they cancel, and the result is weightlessness.

Nope, you're anm idiot.


Bertie

Mxsmanic wrote in
:

JGalban via AviationKB.com writes:

That's what I do. Keeps me from accelerating excessively in the
dive.

Your acceleration is fixed in a parabola.

No, it isn't


Bertie

"mike regish" wrote in message
. ..
What's the best way to fly a zero G parabola? My kids are hooked on them
and they're actually learning some science from it. I'd like to get a
little more duration without getting too fast.

I usually do a little climb until the speed bleeds off some and then push
over firmly. Should I pull the power over the top as I'm pushing?

mike

If you pull first, you can start the push on the way up.

No need for power on the way down.

Are you really flying "zero" or just reduced G? A little positive G will
help keep oil flowing where it needs to go, but it is surprising how long an
engine will run with no oil pressure.

--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.

That's pretty much what I do, except that I haven't been pulling the power,
which means I have to pull out sooner. I've gotten a couple of seconds of
zero g, but mostly just reduced G's. One time, I got my son's soda bottle to
float up in front of him and hold there for a couple of seconds before I had
to start coming out of it. He got a huge kick out of that. I usually wait
until the pull out to pull power. I'll try it at the pushover next time.
I'll check out the oil pressure next time, too. I'd say the longest I've
maintained Zero G is no more than 5 seconds or so.

Thanks.

mike

"Capt. Geoffrey Thorpe" The Sea Hawk at wow way d0t com wrote in message
news:bqOdnZ_3nI59ed3bnZ2dnUVZ_qupnZ2d@wideopenwest .com...
"mike regish" wrote in message
. ..
What's the best way to fly a zero G parabola? My kids are hooked on them
and they're actually learning some science from it. I'd like to get a
little more duration without getting too fast.

I usually do a little climb until the speed bleeds off some and then push
over firmly. Should I pull the power over the top as I'm pushing?

mike

If you pull first, you can start the push on the way up.

No need for power on the way down.

Are you really flying "zero" or just reduced G? A little positive G will
help keep oil flowing where it needs to go, but it is surprising how long
an engine will run with no oil pressure.

--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.

"mike regish" wrote in message
...
That's pretty much what I do, except that I haven't been pulling the
power, which means I have to pull out sooner. I've gotten a couple of
seconds of zero g, but mostly just reduced G's. One time, I got my son's
soda bottle to float up in front of him and hold there for a couple of
seconds before I had to start coming out of it. He got a huge kick out of
that. I usually wait until the pull out to pull power. I'll try it at the
pushover next time. I'll check out the oil pressure next time, too. I'd
say the longest I've maintained Zero G is no more than 5 seconds or so.

Thanks.

mike

"Capt. Geoffrey Thorpe" The Sea Hawk at wow way d0t com wrote in message
news:bqOdnZ_3nI59ed3bnZ2dnUVZ_qupnZ2d@wideopenwest .com...
"mike regish" wrote in message
. ..
What's the best way to fly a zero G parabola? My kids are hooked on them
and they're actually learning some science from it. I'd like to get a
little more duration without getting too fast.

I usually do a little climb until the speed bleeds off some and then
push over firmly. Should I pull the power over the top as I'm pushing?

mike

If you pull first, you can start the push on the way up.

No need for power on the way down.

Are you really flying "zero" or just reduced G? A little positive G will
help keep oil flowing where it needs to go, but it is surprising how long
an engine will run with no oil pressure.

--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.




Tie everything down in back, I had a tow bar come out from under the
back seat in a 172, and poke a neat little hole in the back window.

Al G

Tie everything down in back, I had a tow bar come out from under the
back seat in a 172, and poke a neat little hole in the back window.


There's a video floating around the internet of a golden lab doing
something like that.

On May 10, 12:43 pm, Carl Ellis wrote:
Tie everything down in back, I had a tow bar come out from under the
back seat in a 172, and poke a neat little hole in the back window.

There's a video floating around the internet of a golden lab doing
something like that.

Ask and ye shall receive.

http://www.youtube.com/watch?v=SN77b9DqEbc

On May 8, 5:47 am, "mike regish" wrote:
What's the best way to fly a zero G parabola? My kids are hooked on them and
they're actually learning some science from it. I'd like to get a little
more duration without getting too fast.

I usually do a little climb until the speed bleeds off some and then push
over firmly. Should I pull the power over the top as I'm pushing?

mike

Been a while, you might want to get some acro instruction to really
perfect it, but try this.

Dive so your airspeed is 10-15% below redline. You want enough energy
so that you can get established on a 35-40 degree upline. Once you
get the energy, begin a smooth 1.5-2.0 G pull so you're established on
the upline. Your airspeed will bleed off rapidly, even with full
power. As speed decays towards Vs, reduce power to idle while
smoothly unloading the wing. You want to float over the top with the
airspeed as close to 0 indicated as you can; remember- at 0G the wing
will NOT stall.

The key is to be smooth. Make sure there's no loose objects in the
plane; nothing sucks worse than having a pen lodged in the controls on
the downline. You may want to get instruction from a QUALIFIED acro
CFI.