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1,000 - 1,200 Standard Military Exit Altitude?

 


shibu  (C 42074)

Aug 7, 2014, 11:49 AM
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1,000 - 1,200 Standard Military Exit Altitude? Can't Post

I just read this article in the Incidents section that seems to say the 1,000 - 1,200 ft is a standard exit altitude for some military jumps. Is this correct? I will assume these are static line jumps. I suppose they are also packed like reserves and are mad out of F111 or a similar Reserve Type material. Even so what would the hard deck be in this scenario?

RIP Col. Darron Wright

http://www.dropzone.com/...;;page=unread#unread


(This post was edited by shibu on Aug 7, 2014, 4:24 PM)


Premier PhreeZone  (D License)
Moderator
Aug 7, 2014, 12:09 PM
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Re: [shibu] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

Yes, most rounds are made out of more of a low porosity material than the zero porosity material skydivers are used to using on their canopies. Generally unstaged rounds will open faster than squares will so even at 1000 feet on a SL jump they have the ability to deploy the reserve also if there is a mal on the main. For the most part military canopies are not meant to be cutaway in freefall and the procedure is just to get more material out from the reserve to slow the jumper down more. These rigs do not have three rings for cutaways, their cutaway systems are more designed to help get jumpers out of trees and to prevent being drug on the ground.


normiss  (D 28356)

Aug 7, 2014, 12:24 PM
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Re: [shibu] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

Is this the incident where the officer jumped a square canopy yet exited at round canopy static line altitude???
Crazy


Arvoitus  (D 3917)

Aug 7, 2014, 12:31 PM
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Re: [normiss] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

normiss wrote:
Is this the incident where the officer jumped a square canopy yet exited at round canopy static line altitude???
Crazy

I thought it was some more advanced round canopy.


riggerrob  (D 14840)

Aug 7, 2014, 12:44 PM
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Re: [Arvoitus] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

The newest AT-11 canopy is a cross-type canopy that behaves like a round canopy. Looking straight down, it is sort of rectangular, but all the lines are the same length and it has drive slots on all 4 sides so it goes straight down.


justme12001  (D 29862)

Aug 7, 2014, 12:52 PM
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Re: [riggerrob] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

The article says it was an MC-6 which looks to be a "round" and not a T-11(square round)


riggerrob  (D 14840)

Aug 7, 2014, 12:54 PM
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Re: [shibu] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

Hard deck is 5 seconds after exit. If you don't see a fully-inflated main overhead, pull the ripcord (on your chest-mounted) reserve IMMEDIATELY!


shibu  (C 42074)

Aug 7, 2014, 4:27 PM
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Re: [normiss] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

normiss wrote:
Is this the incident where the officer jumped a square canopy yet exited at round canopy static line altitude???
Crazy

Sorry I thought I posted the link to the article. I added it now.

http://www.dropzone.com/...;;page=unread#unread

It says he jumped an "MC-6 steerable parachute instead of the standard variety used by most conventional soldiers at Fort Bragg". I don't know if it is a steerable round or a ram air type.
THe article did say he jumped at 1,000 ft instead of 1,200 ft.


(This post was edited by shibu on Aug 7, 2014, 4:31 PM)


Doug_Davis  (B 40488)

Aug 7, 2014, 4:47 PM
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Re: [shibu] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

shibu wrote:
I just read this article in the Incidents section that seems to say the 1,000 - 1,200 ft is a standard exit altitude for some military jumps. Is this correct? I will assume these are static line jumps. I suppose they are also packed like reserves and are mad out of F111 or a similar Reserve Type material. Even so what would the hard deck be in this scenario?

RIP Col. Darron Wright

http://www.dropzone.com/...;;page=unread#unread

I have well over 200 jumps in the military. Helicopters accounted for half (which makes it funny that I cant now jump from a helicopter without a B or C license), night, water and handful of intentional tree (in big green gumby suits) landings. One into combat in Panama in 1989.

Standard drop altitude depending on the airframe, DZ size and number of jumpers varied between 800 and 1250' during my career. My one combat jump was from 500' and didnt include a reserve.

As RiggerRob said "hard deck" is 5-6 secs after you jump. By that time you should be looking up at a fully inflated canopy, or pulling the deployment handle on your chest mounted reserve.


theonlyski  (D License)

Aug 8, 2014, 5:06 AM
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Re: [justme12001] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

MC-6 is a steerable round that gives more control and forward drive than a standard T-10.

They (at least for us) required special training in their use and fly a bit differently from the T-10 because you can control it more.

Generally they're reserved for Special Operations because of the fact that you don't want to drop the 82nd Airborne into combat and allow everyone to control where they go, it's much safer to let the wind take everyone along a similar path that is just barely modifiable with a couple fists full of riser.


normiss  (D 28356)

Aug 8, 2014, 6:30 AM
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Re: [shibu] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

Thanks for that.
Wink


melch  (A License)

Aug 17, 2014, 10:28 AM
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Re: [normiss] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

Interesting fact: The acceptable margin of error on a C-130 altimeter is 125ft.

Training jumps are usually conducted at 800-1200ft. At 800ft the jumper (assuming a good 4-Thousand count) has approximately 1.6 seconds to identify he has a malfunction and activate the MERPS reserve to achieve full inflation before hitting the ground.

Training jump altitudes tend to favor towards the 1200ft, especially if jumping special items of equipment; in particular, stinger missile jump packs (SMJP) or the Womack jump pack (Womack is the Army Medical Center injured jumpers are transported to at Ft. Bragg). The stinger missile jump pack is notorious for causing injuries.

Training jumps that are 'hollywood' (main and reserve only...no equipment) are usually planned for the 800ft mark.

The planning altitude for a combat jump is 600ft (don't forget that margin of error).

As mentioned earlier, most of your line troops are jumping T-10Ds or T-11s. MC-1, MC-4, MC-6, SF-10 are for specialized units (Civial Affairs, Special Forces, Pathfinders, LRRS, etc.) When you put 1100 paratroopers in the air in under 8 minutes you want them all drifting with the wind in the same direction. It makes it easier to assemble on the drop zone and mitigates mid-air collisions. Running across the top of your buddy's round is a piss yourself experience. The MC-6 is a steerable round but you are not going to compete in any accuracy competitions with it. Again, it is designed for small units to exit the aircraft and steer generally in the same area. Turn into the wind and hopefully have a softer landing. Also, I've never heard of the MC-6 being used specifically by general officers as the article states.

Also a complete failure of the jumpmaster team not to conduct sustained airborne training or scratch them from the manifest. Regardless of rank, the jumpmaster team members are deities until the Safety conducts his final clear to the rear.


(This post was edited by melch on Aug 17, 2014, 10:40 AM)


melch  (A License)

Aug 17, 2014, 10:31 AM
Post #13 of 14 (583 views)
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Re: [Doug_Davis] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

Doug, which unit did you jump with in Panama?


Doug_Davis  (B 40488)

Aug 17, 2014, 5:03 PM
Post #14 of 14 (489 views)
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Re: [melch] 1,000 - 1,200 Standard Military Exit Altitude? [In reply to] Can't Post

I will shoot you a PM.



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