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Subject: Re: Vne is NOT a meaningless number
From: Mark Sletten <mwsletten@gmail.com>
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The parachutes in the KC-135 had two ripcords. One ceded control of
deployment to an altimeter -- chute opened at ~14,000'. The other ripcord
opened the chute immediately.

I believe two major factors affecting parachute deployment altitude are
oxygen and hang time. IIRC, the descent rate on those canopies is somewhere
south of 1000 fpm. Anyone who has hung in a military parachute harness --
especially one hastily fitted close to, ummm, sensitive areas -- knows more
than about 15 seconds is too long. Ten minutes would be good preparation for
the treatment one is sure to receive after landing in the gulag.

--Mark

Skip Slater said: 'My memory is a bit scratchy here, but I believe it was
somewhere around 20,000'.  You could always manually release yourself too.
At low altitudes, you separated immediately.'

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<span class=3D"Apple-style-span" style=3D"font-family: Arial; "><div>The pa=
rachutes in the KC-135 had two ripcords. One ceded control of deployment to=
 an altimeter -- chute opened at ~14,000&#39;.=A0The other ripcord opened t=
he chute immediately.=A0</div>
<div><br></div><div>I believe two major factors affecting parachute deploym=
ent altitude are oxygen and hang time. IIRC, the descent rate on those cano=
pies is somewhere south of 1000 fpm. Anyone who has hung in a military para=
chute harness -- especially one hastily fitted close to, ummm, sensitive ar=
eas -- knows more than about 15 seconds is too long. Ten minutes would be g=
ood preparation for the treatment one is sure to receive after landing in t=
he gulag.</div>
<div><br></div><div>--Mark</div><div><br></div>Skip Slater said: &#39;My me=
mory is a bit scratchy here, but I believe it was somewhere around 20,000&#=
39;.=A0 You could always manually release yourself too.=A0 At low altitudes=
, you separated immediately.&#39;</span>

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