Correct way to fall?

Sorry if this is the wrong group, it’s the best I could find in our hierarchy.

What is the best way to survive falls from a great height?  Some things I’ve
heard are:  1) Parachutists are told to try to land flat on their backs if
their chutes fail.  2) When falling from moderate height rolling helps.  3)
Being limp or unconscious helps.  (A distant relative survived a fall of
about 10 stories because several stories down he hit something that knocked
him out.)

So:  What is the best way to survive a fall?  Does the strategy change for
different heights of falls?
I suspect this will generate at least some speculation.  If your posting
starts with "I think that…" please consider mailing it to me instead of
posting it.

7 Responses to “Correct way to fall?”

  1. admin says:

    In <18…@csli.Stanford.EDU> cphoe…@csli.Stanford.EDU (Chris Phoenix) writes:

    >So:  What is the best way to survive a fall?  Does the strategy change for
    >different heights of falls?

    When I was 12 I fell 20 feet from a tree onto hard packed dirt (California
    desert alluvium) with no injury. I fell relaxed because I was too surprised
    at losing my grip to react to falling.

    At age 18 I fell 60 feet from a lighting grid to a hardwood theatre stage.
    I had time to react and deliberately tried to relax. I was not knocked out,
    but was dazed for about 5-10 minutes. No injuries. I landed essentially
    on my back (perhaps rolled slightly to the right), at least, at the end of
    the impact I was lying flat in a spread-eagled position.

    I may have gotten into a slightly tucked or ‘zero-g’ position during both
    falls. I know that in both cases I did not feel a hard blow to my head but
    felt the impact most strongly in my buttocks, shoulders, hands and feet
    (both whipped down hard). Knuckles slightly skinned in the latter fall,
    bruises on butt and calves.

    Kids, don’t try this at home.


    ====================================================================
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  2. admin says:

    In article <18…@csli.Stanford.EDU> cphoe…@csli.Stanford.EDU (Chris Phoenix) writes:
    >What is the best way to survive falls from a great height?  

    In a recent National Geographic TV special on cats there was discussion
    of what verternarians call "high rise syndrome" – cats falling out
    of apartment house windows.  Surprisingly, cats falling from greater
    heights are usually less-seriously injured (up to some limit, presumably :-) .
    They attributed this to the fact that the cat had more time to relax
    during the long fall.

    ||||  Boyd Ostroff / Tech Director / SUNY Oswego Dept of Theatre / 315-341-2987
    ||||  Sys Admin / cboard.UUCP / Serving the Performing Arts / 315-947-6414/8N1
    ||||  ostr…@oswego.oswego.edu / cboard!ostr…@natasha.oswego.edu

  3. admin says:

    In a message to All <12 Apr 91 07:12> Adams Douglas wrote:
     AD> From: ada…@crash.cts.com (Adams Douglas)

     AD> In <18…@csli.Stanford.EDU>
     AD> cphoe…@csli.Stanford.EDU (Chris Phoenix) writes:
     >>So:  What is the best way to survive a fall?  Does the strategy change for
     >>different heights of falls?

     AD> When I was 12 I fell 20 feet from a tree onto hard packed dirt
    (California
     AD> desert alluvium) with no injury. I fell
     AD> relaxed because I was too surprised
     AD> at losing my grip to react to falling.

    …etc.

    Since there is no way to predict a fall, you would have to react very quickly,
    particularly if the height is 20 feet of less. As you say, the best way is to
    stay loose and hope you land prone. The natural reaction is to point your arms
    and legs toward the ground to try to break your fall, which only results in
    broken arms and legs.

    If the fall is over 60 feet, and some people have survived from falls over 100
    onto cement, then try to assume the spead eagle, or ‘sky fall’ that skydivers
    use to maximize air friction and slow your decent. This will also level your
    body to allow for maximum impact absorbsion upon landing, prevent you from
    landing head first, and may knock the wind out of you but keep you alive.
    Hurtin’ but alive.

    DAS

     AD> —
     AD> ====================================================================
     AD> Adams Douglas           Groucho: "Did you know there’s a million
     AD> 3206 Raintree Circle              bucks hidden in the house next door?"
     AD> Culver City, CA 90230   Chico: "But there is no house next door."
     AD> crash!adamsd            Groucho: "No? Then LET’S GO BUILD ONE!"

    P.S. You’re under arrest for macro abuse! 8-)]

    –  
    Uucp: …{gatech,ames,rutgers}!ncar!asuvax!stjhmc!273!909.2!David.Seiver
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  4. admin says:

    In article <7839.280F0…@stjhmc.fidonet.org>

    David.Sei…@p2.f909.n273.z1.fidonet.org (David Seiver) writes:
    > Since there is no way to predict a fall, you would have to react very
    quickly,
    > particularly if the height is 20 feet of less. As you say, the best way
    is to
    > stay loose and hope you land prone.

    Are you certain?  All of the anecdotes mentioned here involved landing
    supine, and ever time I have seen a stunt person or a circus person do a
    fall, it has always been supine or a roll to a supine position.

    Eric Pepke                                    INTERNET: pe…@gw.scri.fsu.edu
    Supercomputer Computations Research Institute MFENET:   pepke@fsu
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    Disclaimer: My employers seldom even LISTEN to my opinions.
    Meta-disclaimer: Any society that needs disclaimers has too many lawyers.

  5. admin says:

    Well, when you fall, the force of impact depends on the rate of
    deceleration.  If you roll out of a fall, you will be decelerating through a
    greater distance than just landing on your feet.  Landing prone probably
    helps distribute the force throughout your body, rather than concentrating
    the shock.

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  6. admin says:

    >Well, when you fall, the force of impact depends on the rate of
    >deceleration.  If you roll out of a fall, you will be decelerating through a
    >greater distance than just landing on your feet.  Landing prone probably
    >helps distribute the force throughout your body, rather than concentrating
    >the shock.

    Yeah, but wouldn’t that hurt your face? :-)  I’d rather land supine.

            Bruce

  7. admin says:

    le…@sp1.csrd.uiuc.edu (Bruce Leung) writes:
    >>Well, when you fall, the force of impact depends on the rate of
    >>deceleration.  If you roll out of a fall, you will be decelerating through a
    >>greater distance than just landing on your feet.  Landing prone probably
    >>helps distribute the force throughout your body, rather than concentrating
    >>the shock.
    >Yeah, but wouldn’t that hurt your face? :-)  I’d rather land supine.
    >    Bruce

    I have heard of parachuters who have had chutes fail to open.  They
    land prone (on their face).  Besides a flattened nose, teeth knocked
    out, and maybe some other facial fractures, they have survived.  If
    you landed on your back, you would probably shatter the back of
    your skull, where your brain stem is and so forth.  That will kill you.

    If your parachute does open, if you land with your knees locked, you will
    break your legs, or your pelvis.

    If you want to learn how to fall, take a martial arts class, that concentrates
    on lots of falls and takedowns– aikido, judo, so forth…

    John Carey
    University of Illinois
    Dept. of Computer Science
    ca…@a.cs.uiuc.edu {uu-net,pur-ee,convex,…}!uiucdcs!carey