You Just Never Know

I recall a rule of thumb, that the human body is able to withstand ~20
Gs.

Only if properly restrained. Six point harness and all.

Jose
--
Math is a game. The object of the game is to figure out the rules.
for Email, make the obvious change in the address.

("Jose" wrote)
Only if properly restrained. Six point harness and all.


I thought prone/supine had something to with reaching max G's also.


Montblack

"Larry Dighera" wrote in message
...
On Thu, 03 Mar 2005 19:01:50 GMT, David CL Francis
wrote in
::

According to my quick sum that is about an 11g average over 30 ft.

I recall a rule of thumb, that the human body is able to withstand ~20
Gs.

But, it has gone much higher:

"By riding the decelerator sled himself, Dr. Stapp demonstrated that a human
can withstand at least 45 G's in the forward position, with adequate
harness. This is the highest known G force voluntarily encountered by a
human. Dr. Stapp believed that the tolerance of humans to G force had not
yet been reached in tests, and is, in fact, much greater than ordinarily
thought possible."

From:

http://www.edwards.af.mil/history/do...biography.html

And, doesn't duration factor in as well? For example, race car drivers have
experienced extremely high g-forces in wrecks but these were measured in
milliseconds.

I did a little Google-ing and saw references to NASCAR Black Box data
suggesting that some wrecks have been as high as 80Gs with Jerry Nadeau's
accident at Richmond a couple of years ago possibly being in the area of
"160Gs"

Mentioned In:

http://www.nascar.com/2003/news/head...eck/index.html

Jay Beckman
PP-ASEL
Chandler, AZ

In many high-G deceleration accidents, the aorta is ripped from the
heart, resulting in instant death.

("Jose" wrote)
Only if properly restrained. Six point harness and all.

Montblack wrote:
I thought prone/supine had something to with reaching max G's also.

In many high-G deceleration accidents, the aorta is ripped from the heart,
resulting in instant death.

And in many others, it only partially tears, resulting in slow death.

Thus explaining the phenomenon of "she was up and talking right before she
keeled over" that is common in many airplane crashes.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

On Fri, 4 Mar 2005 00:22:53 -0700, "Jay Beckman"
wrote:

"Larry Dighera" wrote in message
.. .
On Thu, 03 Mar 2005 19:01:50 GMT, David CL Francis
wrote in
::

According to my quick sum that is about an 11g average over 30 ft.

I recall a rule of thumb, that the human body is able to withstand ~20
Gs.

But, it has gone much higher:

"By riding the decelerator sled himself, Dr. Stapp demonstrated that a human
can withstand at least 45 G's in the forward position, with adequate
harness. This is the highest known G force voluntarily encountered by a
human. Dr. Stapp believed that the tolerance of humans to G force had not
yet been reached in tests, and is, in fact, much greater than ordinarily
thought possible."

Now there is a guy who took a real physical beating to prove a point!
He looked like he'd been caught out back of a bar.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com


From:

http://www.edwards.af.mil/history/do...biography.html

And, doesn't duration factor in as well? For example, race car drivers have
experienced extremely high g-forces in wrecks but these were measured in
milliseconds.

I did a little Google-ing and saw references to NASCAR Black Box data
suggesting that some wrecks have been as high as 80Gs with Jerry Nadeau's
accident at Richmond a couple of years ago possibly being in the area of
"160Gs"

Mentioned In:

http://www.nascar.com/2003/news/head...eck/index.html

Jay Beckman
PP-ASEL
Chandler, AZ