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-   -   could you withstand 7.5g ? (https://www.pprune.org/private-flying/229144-could-you-withstand-7-5g.html)

D SQDRN 97th IOTC 5th Jun 2006 14:40

could you withstand 7.5g ?
 
enjoy!

http://alt.coxnewsweb.com/ajc/swf/bl...ngels_lite.swf

Megaton 5th Jun 2006 14:45

7.5 g? Cream puffs :) :)

davidatter708 5th Jun 2006 15:42

Never tried but it would be fun.:E
Someone could take me up and see:E

BEagle 5th Jun 2006 18:19

Yes! I once pulled over 8... Which was a bit of a shame as it overstressed the dear old Hunter T7 somewhat.

I hasten to add that this was long before the daft obsession with jockstrappery (JockStirrupery?) which infests HMFC these days!

Malcolm G O Payne 5th Jun 2006 18:42

7.G
 
I pulled 7.5G in a Venom 1 at a VERY LOW altitude when I got target fixation during low level bombing. I was lucky to survive in view of the Venom's propensity to flick at high G. This was on a morning session and I couldn't face any food for the rest of the day.

jayteeto 5th Jun 2006 19:52

Great great video!! I flew with the Red Arrows synchro pair a few years back and managed to stay awake, but a 22 minute display tired me out more than a 10k run!!

Sleeve Wing 5th Jun 2006 20:56

7.5G ?
Yeh, o' course ! Not for too long though, as in one of Auntie Betty's jet-fired pointy thingies.
But, in an Extra, well, perfick.
No need then for hot, sweaty speed jeans !

Enjoy.
Rgds, Sleeve.

chevvron 7th Jun 2006 20:14

Experienced 5.5 g in Hawk once with squeezy trousers on and no problem; a month later did 4.5 g in a Hunter without squeezy trousers and experienced 'grey out'; very interesting as I'd read about it but not experienced it!

Sleeve Wing 7th Jun 2006 21:10

Down to the gym then, chevvron !
And a little bit more G-tolerance training !

Only jokin', just jealous.....!
Been trying to get my hands on something like a Hunter again for ages.
Just too expensive these days.
Oh, to go back 40 years !!!!!!!!!
Rgds, Sleeve.

ShyTorque 7th Jun 2006 22:01

Once sent my RAF IRE to sleep during a limited panel U.P. recovery in a JP5 (Altimeter, ASI and Turn and Slip only). After he flew a few U.P. gyrations, including positive and negative G, during which he insisted I had my eyes shut under my IF hood, he craftily gave me control inverted, just after the apex of a barrel roll. I held 1G and "levelled the wings", iaw with the recommended recovery drill. I watched the altimeter, which began to unwind, so I pulled back on the stick to stop it. As we were inverted and pulling into a vertical dive, it unwound a lot more - so I kept pulling. I suddenly twigged what he had done, but by then it was too late to roll the correct way up. I continued to pull to just under 7G to stop the altimeter unwinding. As we went past about 6.5G, his chin suddenly snapped down onto his chest and he was out like a light...... :E

By the time he woke up and started twitching, I was at full power and climbing like a dingbat. He was silent for quite some time. I levelled off, and he said "that was enough of those" and to go home for the ILS.

He never admitted he had blacked out and I passed the IRT!

S-Works 7th Jun 2006 22:10

i struggle with one g..... damn humans......

slim_slag 8th Jun 2006 11:17

I'm afraid I am just a amateur hack when it comes to pulling g, but have found that at my level if you have pulled more than 4g in a maneouver you have cocked it up. So repetitive 4g is fine but knackers you after a short time. Somewhere between 4g and 5g I start to see vision changes, and I really don't like seeing 5g on the meter as I'm getting a bit old for that sort of stuff and it's a sign to head back home. No doubt you experience a lot more than 7.5g every time you jump off a low wall, but thats a smartass answer and I don't think the question was about that.

'Chuffer' Dandridge 8th Jun 2006 11:58

yes, on a regular basis. Just do a lot of grunting & straining:sad:

B2N2 8th Jun 2006 17:08

My claim to fame is pulling 7 G in a glider.
back when I was young and stupid (not too long ago) we used to do this stuff all the time. Fly with a buddy and see how far you can get.
Didn't pass out although vision was totally gone.
We made it that far by doing a lot of practice runs so you get used to it.
Wouldn't really recommend it to anybody though.....

wombat13 9th Jun 2006 08:52

Stupid question time...............

What g do you experience when intentionally spinning, say, a Grob 115?

The Wombat

kluge 9th Jun 2006 08:59

you are not pullng g - therefore 1g

PPRuNeUser0172 9th Jun 2006 11:56

B2N2 To use a great Top Gun quote as it is wholly fitting "coughBULLH!ITcough"

Of course you did sweer heart, what glider, what speed were you doing to achieve such a high g load?


used to fly with a buddy and see how far you could get
whatever floats your boat mate,

boo and then you woke up.

Regards

DS

Megaton 9th Jun 2006 12:18

Greyed out many times and blacked myself out a couple of times (dual - I hasten to add). Use to sit in back for Hawk airtests + 8g -3g no speed jeans - absolutely miserable :) You do get used to it after a while though. Mask sliding off your face or the git in front heaving hard on the stick every time he saw you lean forward so your head gets stuck between your knees!

B2N2 9th Jun 2006 13:11

Sanchez, I'll pick up the glove on that one..:mad:
http://www.segelflug.de/vereine/wers..._sturzflug.jpg


SCHLEICHER ASK-21...
From the Schleicher website :
http://www.alexander-schleicher.de/englisch/e_main.htm
I quote:

The versatility of the aircraft is further enhanced by its aerobatic capabilities. Maximum g-loads of +6.5 and -4.0 (for speeds up to 97kt) make the ASK 21 suitable for the entire training syllabus - including spin training.


back when I was young and stupid
Thank you.

Mark 1 9th Jun 2006 13:22


Originally Posted by wombat13
Stupid question time...............
What g do you experience when intentionally spinning, say, a Grob 115?

If you'd like a pictorial answer to your question go to http://www.rv-4.de/

then to videos and trudelerprobung(4.3MB).

There's a big g-meter top right in the panel - it goes a bit below 1 as you stall and enter, oscillates about 1 as the spin settles and then goes up, of course, as you pull out of the dive.

Edited to add - you'll also experience lateral g-forces which don't show up on the g-meter


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