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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 |
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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
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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 |
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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 |
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"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. |
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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
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![]() "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 |
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![]() 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
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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
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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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