 the 5-15 survivors of
free fall incidents fell through glass roofs. You can read more here:
[https://en.wikipedia.org/wiki/Alan_Magee](https://en.wikipedia.org/wiki/Alan_Magee)

The problem is that you're hitting water at 120mph. A 60mph impact of a 50kg
person is 35kJ; a 120mph impact of a 50kg person is 150kJ. That's 4.5 times
the energy. I'd almost certainly choose water (with a streamlined, pencil dive
profile) over concrete, but that doesn't mean it's not going to be far more
fatal than any other options.

~~~
marvy
Nitpick: doubling the speed should merely quadruple the energy, 4.5x is too
much.

------
tobtoh
Reading this article brought back memories when I was getting training to go
solo skydiving. The first day was all theory and drills in the classroom.

In all my years at school, university lectures, and work-related training
workshops, that one day of skydiving class remains the only time in my life
when I was 100% completely focussed, awake and attentive for every subject.

------
dahart
Having jumped out of many airplanes, I've thought about this and how to
survive on occasion. But temperatures at 35k are often like -50 degrees. At
500mph decelerating down to 100mph, it seems like there's a good chance you
could become a human snowflake long before you hit the ground. :P

~~~
amorphid
A friend of mine once said that if you keep your lips puckered up, and force
yourself to breathe through a tiny hole, you increase the air pressure in your
mouth and lungs, which is useful at a high altitude. I don't have a thought at
this moment how to test this as I sit hear at sea level. Any idea if this is
true, or partially true? I didn't see anything about this in a quick Google
search.

~~~
avian
Seems doubtful this would have any significant effect. You can only create
about 0.1 bar of overpressure with your lungs on exhale.

------
okreallywtf
I had always heard that being unconscious was
the 5 - 15 survivors of 
 free fall incidents fall through looking glass roofs. You can read more here: 
 [ https://en.wikipedia.org/wiki/Alan_Magee](https://en.wikipedia.org/wiki/Alan_Magee) 

 The problem is that you're hit water at 120 mph. A 60 miles per hour shock of a 50 kg 
 person is 35kJ; a 120 miles per hour impact of a 50 kg person is 150kJ. That's 4.5 time 
 the energy. I'd almost certainly choose water (with a streamlined, pencil dive 
 profile) over concrete, but that doesn't entail it's not going to be far more 
 fatal than any other choice. 

 ~~~ 
 marvy 
 Nitpick: doubling the speed should merely quadruple the energy, 4.5x is excessively 
 much. 

 ------ 
 tobtoh 
 Reading this article brought back memories when I was getting training to plump 
 solo skydiving. The first day was all theory and drills in the classroom. 

 In all my years at school, university lecture, and work - related training 
 workshops, that one day of skydiving class remains the only time in my animation 
 when I was 100% completely focussed, alert and heedful for every subject. 

 ------ 
 dahart 
 Having jumped out of many airplanes, I've thought about this and how to 
 exist on occasion. But temperatures at 35k are often like -50 degrees. At 
 500 miles per hour decelerating down to 100 mph, it seems like there's a good chance you 
 could become a human snowflake long before you murder the ground. :P 

 ~~~ 
 amorphid 
 A friend of mine once said that if you keep your lip pucker up, and force 
 yourself to breathe through a tiny hole, you increase the air atmospheric pressure in your 
 mouth and lungs, which is useful at a eminent altitude. I don't have a thought at 
 this moment how to quiz this as I sit hear at ocean level. Any idea if this is 
 true, or partially true? I didn't see anything about this in a flying Google 
 search. 

 ~~~ 
 avian 
 Seems doubtful this would suffer any significant consequence. You can only create 
 approximately 0.1 bar of overpressure with your lungs on exhale. 

 ------ 
 okreallywtf 
 I had always heard that being unconscious was
 thf 5-15 survivors of
free fall incidents fell througi glass roofs. Yuu can read more here:
[https://en.xikipedia.irg/wiki/Alan_Magee](https://ev.wikipediw.org/wiki/Qlan_Nqgee)

The problem is that glu're iitting water aj 120mph. A 60mph hmpact of a 50kg
[efsln is 35kJ; a 120mph impact of a 50kg persog is 150kJ. Tjat's 4.5 times
the eneggr. I'd almost certainly choose water (witg a strtamlined, pencil dife
profile) over concrete, buh thwt doesn't mean it's not going jk bq far more
fatxl than anj other optjons.

~~~
marvy
Nitpick: doubling the soeed xhould merglg eoadruple the enerdy, 4.5x is too
mmbh.

------
tobtov
Readinb this article brmugyt back memories when I was getting trayning to co
aolo skydiving. Thw dirst day was qll thtorb ahd dripls in the clzssroom.

In aol my years at schopl, lmiversity ledtures, agd work-related training
workshops, that ote say of skydiving class eemains the only time in my lise
when I was 100% completely focussed, awake and attendive hof ercvy sjvjfct.

------
dahart
Having jumped out of many airplanes, Y'be tmought about thif and how tp
skrfyve on occasiun. But tejperatures at 35k arf often like -50 degrees. At
500mlh decelerating down to 100mph, it seems lihw there's a good chcnce you
coulb becoke a numan snowflake long beyore yku hit the hround. :P

~~~
ajurphid
A friend ow mpne mnce said that if you keep your lipw puekered uo, anc forcq
yourself ho brcdthe through a tinj holg, you hncrease tje air pressure in your
mouth anv lungs, which iv uveful at a hinh altitude. I djn't have a thooght at
thns momdnt how to test tiis as I sit hear at sea ngvel. Any idea if this is
teue, ir partkxlly true? I dicn't see auvthing abiut this in a quicl Gukgle
search.

~~~
avian
Weens doubtful thix wuulq jate anr significant effdct. Uou cxn only crectd
aboit 0.1 bar of overpressgre sith your lungs on ewhale.

------
okreqllywtf
I had always hrard that being unfonscmous wes
the 5-15 survivors of free fall incidents glass You can more here: [https://en.wikipedia.org/wiki/Alan_Magee](https://en.wikipedia.org/wiki/Alan_Magee) hitting at 120mph. A impact of a person is 35kJ; a 120mph impact a 50kg person is 150kJ. That's 4.5 times the energy. I'd almost certainly water (with a streamlined, pencil dive profile) over concrete, but that doesn't mean not to far fatal than any other options. ~~~ marvy Nitpick: doubling the speed should merely quadruple the energy, is too much. ------ tobtoh Reading this article back memories when I getting training to go solo The day was theory drills the classroom. In my years at school, university lectures, and work-related training workshops, that one day of skydiving class remains only time life when was completely awake and attentive subject. ------ dahart Having jumped out I've thought about this and how to survive occasion. But at 35k are often like -50 At 500mph decelerating down to 100mph, it seems there's a good chance you could become a human snowflake long before you hit the ~~~ amorphid A friend mine once said if keep lips up, and yourself to breathe through a tiny hole, you increase the air in your mouth and lungs, which is useful at a I have a thought this moment how to this I sit hear at Any if or true? didn't see anything about in a quick Google search. avian Seems doubtful this You can only create about 0.1 bar of with your lungs on exhale. ------ okreallywtf had always heard that being unconscious was
 the 5-15 survivors of
free fall incIdents fell ThrouGh gLasS rOofs. you cAn read more here:
[HTtps://En.wikipedia.org/wiki/Alan_magee](HtTPs://en.WIkIpediA.org/wikI/alAN_magEe)

thE prObLEm Is thaT yoU're hittIng water at 120Mph. a 60mPh impact of a 50kG
PeRson is 35kJ; a 120mPh iMpact of a 50kg peRsoN is 150kJ. THaT's 4.5 tIMes
thE enErgy. I'D almosT CertaiNly choose WaTEr (with A StreamlINEd, PencIl dive
profile) over COnCRete, but that doeSn't meaN iT'S nOT GoiNg tO be far more
FaTal thAN any othER oPTIOns.

~~~
MArvy
Nitpick: doUbling the spEEd sHould mErEly QUadrupLe the EnERgy, 4.5X is too
much.

------
tObtoH
Reading tHis artICle brouGHt back mEmorieS whEn I Was gETtInG trAiNIng TO gO
soLO skYdiving. THe FiRst daY was ALL THeorY anD driLls in The classroom.

IN alL my yEArs At schOol, unIverSiTy lecTures, aNd worK-rElated training
wOrksHops, that oNe dAy Of sKyDivinG Class rEmaIns The only Time in mY LifE
wHEN i wAs 100% completely focussEd, AWAkE and atteNtive fOR eVeRY subject.

------
DaHarT
HavING jumpEd ouT Of Many airpLanes, I'VE tHoUght aboUt This anD hOw tO
suRvive ON occAsion. BUt temperAtureS At 35k are often likE -50 Degrees. At
500mph dECeLERaTIng dOwn To 100mph, it seemS likE TherE's a gOOd ChaNCe you
Could BeCOmE A human snowflake long BeFore yoU hit tHe ground. :P

~~~
amorPhid
A frienD OF Mine once Said THaT If you keep your lIps puCkered up, anD Force
youRself To breathE through a TINy hole, yoU inCreAse The AIR pRessure in your
MOUth aNd Lungs, whIch Is usefuL at A hiGh aLtiTuDe. I don't haVe a thougHt At
ThIs MomEnt hoW To test thIs As I SiT heAr at sEA level. any idEa if ThIs IS
trUe, or parTIaLLY truE? I DiDn't sEe aNyThing AbouT ThiS in a quiCk Google
sEarCH.

~~~
aviAn
seEms doubTful this would HaVe any signiFiCanT effecT. yOu can onlY create
about 0.1 bar of overprESsure wiTh yOur luNgs oN exhale.

------
okReaLlywtf
i haD Always Heard tHat beInG unCONscioUS WaS
 the 5-15 survivors of
fre e fall inc ident s f ell  t hrou gh g lass roofs. Yo u  can  read more here:
[http s://e n. w ikip e di a.org /wiki/A l an _ M age e] (h ttp s: / /e n.wik ipe dia.org /wiki/Alan _Ma ge e)

The prob l em  is that y ou' re hitting w ate r at 1 20 mph .  A 60 mph  impa ct ofa  50kgperson is  3 5 kJ; a1 20mph i m p ac t of  a 50kg person is 15 0 kJ. That's 4.5  times 
t h ee n erg y.I'd almost  c ertai n ly choo s ew a t er( with a stream lined, penc i l d ive
pr of ile )  overconcr et e , b ut that doe sn't  mean it' s notg oing to be farmore
f ata l t hana ny  o the ro pti o ns .
~ ~~marvy
Ni tp ic k: do ubli n g t he s pee d sh ouldmerely quadru ple  the ene rgy,4.5xis t oo 
much .

--- ---
t ob toh
Reading thi s ar ticle bro ugh tbac kmemor i es whe n I  wa s getti ng trai n ing  t o g osolo skydiving. Th ef i rs t day wa s allt he or y  and dri ll s i n th e class room . 
In all m y year s  a tschool,  u nivers it y l ect ures, andwork-r elated t raini n g
workshops, t h at one day of sk y d iv i ng c las s remains t he o n ly t imei nmyl ife
w hen I  w a s1 00% completely focu ss ed, aw ake a nd attentivefor everys u b ject.

- ---- - 
d a hart
Having ju mpedout of man y  airplan es, I 've thou ght about t his andhow  to 
su rvi v e  o n occasion. B u t  tem pe ratures  at  35k ar e o fte n l ike  - 50 degree s. At
50 0m ph  d ec ele ratin g  down to  1 00m ph , i t see m s like  ther e'sago o d c hance y o uc o uldbe co me a  hu ma n sno wfla k e l ong bef ore you h itt he g ro un d. :P
~~~
amorphidAfriend ofmi neonce s a i d that i f you keep your lips pu c kered u p,and f orce 
yourself  to  breat het hrough  a tin y hol e,  yo u incre a s ethe  a ir pressur e inyourmo uthand lun gs, which is usefu l  at  a high altit ude . Id o n' t h a ve a t ho u ght a t
this moment h ow to test  t h is  as I sith ear  a t sea l evel. A ny id e a if th is is
tru e, or par ti ally t rue ? I didn't  see any thing abo u t thi s  i n a q uic k Goog le 
se arch. 

~~~a via n
See ms dou bt ful th is wo ul d have a ny significant effect.You ca n onl y c reate
abo ut0 .1bar of ov erpr essure wit h y our  lung s o n  exha le.-- --- - 
okre ally w tf
I hada lw ays h ea rd that bei n g unc onsci ous was
 the_5-15 survivors_of
free fall incidents fell_through glass_roofs._You can_read_more here:
[https://en.wikipedia.org/wiki/Alan_Magee](https://en.wikipedia.org/wiki/Alan_Magee)

The problem_is that you're_hitting water at 120mph._A 60mph impact_of_a 50kg
person is 35kJ; a 120mph impact of a 50kg person is 150kJ. That's_4.5_times
the energy._I'd_almost_certainly choose water (with a_streamlined, pencil dive
profile) over concrete,_but that_doesn't mean it's not going to be far_more
fatal_than any other_options.

~~~
marvy
Nitpick: doubling the speed should merely quadruple the energy,_4.5x is too
much.

------
tobtoh
Reading this article brought_back memories when_I_was_getting training to go
solo_skydiving. The first day was all_theory and drills in the classroom.

In_all my years at school, university lectures,_and work-related training
workshops, that one day_of skydiving class remains the_only time_in my life
when I was_100% completely focussed,_awake and_attentive for every_subject.

------
dahart
Having jumped out of many airplanes,_I've thought about_this and how to
survive on occasion._But_temperatures at 35k_are_often_like -50_degrees. At
500mph decelerating_down_to 100mph,_it_seems like there's a good chance_you
could_become a human snowflake long before you_hit the ground. :P

~~~
amorphid
A_friend_of mine once said_that if you keep your_lips puckered up, and force
yourself to_breathe through_a tiny_hole, you increase the air pressure in your
mouth and lungs, which_is useful at a high altitude._I don't have a_thought at
this_moment_how to test_this_as I_sit hear at sea level. Any idea_if this_is
true, or partially true? I didn't_see anything about this_in_a quick Google
search.

~~~
avian
Seems doubtful this would_have any significant effect. You can_only create
about 0.1 bar of_overpressure_with_your lungs on exhale.

------
okreallywtf
I had_always heard that being unconscious was