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Zero G profile



 
 
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  #1  
Old May 8th 07, 10:47 AM posted to rec.aviation.piloting
mike regish
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Posts: 438
Default Zero G profile

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


  #2  
Old May 8th 07, 01:58 PM posted to rec.aviation.piloting
Paul Tomblin
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Posts: 690
Default Zero G profile

In a previous article, "mike regish" said:
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?


Why don't you get up to full speed, pitch up, then push down a bit? That
way you can get negative G's on the way up while you're bleeding off the
speed.

--
Paul Tomblin http://blog.xcski.com/
I mean, if went 'round saying I was a perl hacker, just because some
moistened bint lobbed a "Perl for Dummies" at me, they'd put me away!
-- Randy the Random
  #3  
Old May 8th 07, 02:43 PM posted to rec.aviation.piloting
Dale
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Posts: 31
Default Zero G profile

In article ,
"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


While your doing the zero G take a glance at the oil pressure
gauge...you may find it has dropped very low. FYI
  #4  
Old May 8th 07, 08:23 PM posted to rec.aviation.piloting
JGalban via AviationKB.com
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Posts: 356
Default Zero G profile

mike regish wrote:

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?


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

John Galban=====N4BQ (PA28-180)

--
Message posted via AviationKB.com
http://www.aviationkb.com/Uwe/Forums...ation/200705/1

  #5  
Old May 8th 07, 10:00 PM posted to rec.aviation.piloting
Capt. Geoffrey Thorpe
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Posts: 790
Default Zero G profile

"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.


  #6  
Old May 9th 07, 10:43 AM posted to rec.aviation.piloting
mike regish
external usenet poster
 
Posts: 438
Default Zero G profile

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.



  #7  
Old May 9th 07, 09:31 PM posted to rec.aviation.piloting
Al G[_2_]
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Posts: 112
Default Zero G profile


"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


  #8  
Old May 10th 07, 01:43 AM posted to rec.aviation.piloting
Carl Ellis
external usenet poster
 
Posts: 4
Default Zero G profile


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.
  #9  
Old May 10th 07, 02:22 AM posted to rec.aviation.piloting
James Sleeman
external usenet poster
 
Posts: 106
Default Zero G profile

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




  #10  
Old May 10th 07, 04:20 PM posted to rec.aviation.piloting
[email protected]
external usenet poster
 
Posts: 6
Default Zero G profile

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.

 




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