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Grav Chutes?
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Old 12 Feb 2006, 03:32   #1 (permalink)
Shas'O
 
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Default Grav Chutes?

Well, my (hopefully) simple question is this: how do they opperate? Are they some form of promethium-fueled jetpack, or do they actually manipulate the gravity field?

I'd like to use them on one of the Inquisitor characters I'm working on, but I can't realy do that if I don't have a clue how they work - the most pressing question being are they a one-hat trick (is that backwards?), or can they be used again to get off the building you landed on without using the stairs, for example?

Thanks in advance, everyone.
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Old 12 Feb 2006, 04:00   #2 (permalink)
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Default Re: Grav Chutes?

I may be wrong here, but I was always under the assumption that they are kind of like a parachute but without the parachute. The troops get dropped from a ship, and their descent is slowed right before they land by something like a tractor-beam or some 'anti-gravity' physics manipulation device. It can't be reused, since they are calibrated for the grav thing when they leave their dropship, much like a paratrooper can't re-use his chute.
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Old 12 Feb 2006, 04:26   #3 (permalink)
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Default Re: Grav Chutes?

I see - that makes alot of sense, thank you. It also makes it much more justifiable for my regiment to be using an advanced form of paraglider instead - you never know when you need to put a bit of a spring in your step when you're a mountain-combat specialist .
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Old 12 Feb 2006, 05:55   #4 (permalink)
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Default Re: Grav Chutes?

I always thought they were a tube on the ship that the men got into and got basically shot toward the ground then slowed right at the end and landed safely, then they had a portable device to get back on the ship if need be. Something like the grav lift in halo but on a smaller scale and lots of them
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Old 12 Feb 2006, 06:31   #5 (permalink)
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Default Re: Grav Chutes?

Quote:
Originally Posted by ??
I always thought they were a tube on the ship that the men got into and got basically shot toward the ground then slowed right at the end and landed safely, then they had a portable device to get back on the ship if need be. Something like the grav lift in halo but on a smaller scale and lots of them
yes. what i was saying too. but remember burning up in atmospheric re-entry means said ship would not be in orbit.... more like a plane dropping guys with a fine precision tractor beam to slow their landing.
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Old 12 Feb 2006, 10:02   #6 (permalink)
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Default Re: Grav Chutes?

I always imagined them as reducing your velocity with respect to the nearest significant mass (like a planet), and dumping the excess energy as heat. Like the gravity drag devices occurring infrequently in Larry Niven's writing.

This would have advantages over a parachute in that it would work without atmosphere (vital for surviving re-entry), and could be re-used without spending ages folding it back into a pack. There could be other limitations, though - the heat accumulation would make it awkward to handle safely, and might limit how much you could use it without leaving it to cool.

A parachute or paraglider, however, would still have its own advantages. Unlike a gravchute, they could steer themselves when they were in an atmosphere, allowing troops better control over where they landed. (Say, not on a load of ankle-breaking rocks.)
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Old 12 Feb 2006, 10:07   #7 (permalink)
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Default Re: Grav Chutes?

Grav-chutes are not well covered in fluff... but they seem to be a catch-all term for anything that stops you repainting the drop site a deep shade of crimson when you land.

Parachutes we already know about, but Jump Packs are also used.

These are lage backpacks, weighing around 150-250lbs. However, once activated, they easily compensate for their own weight. They have two "arms" reaching out the top, holding anti-grav plates, and a central thrust-unit on the back. The anti-grav system serves only to repel the pack away from the ground, directional movement comes from the thrusters.

As even a fully equipped Guardsmen is much lighter than a Marine, their packs are much smaller and more compact. The pack itself is controlled by a joystick.


For those who are curious, it seems Marine Jump Packs do not use anti-grav. Presumably, the size of the AG units needed to lift something as heavy as an Astartes in full kit would be too large to be practical. Instead, Marines seem to use some form of jet booster system, allowing for small "hops". This presents another key difference; Marine Jump Packs do not seem capable of true flight, whereas Guard ones are.
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Old 12 Feb 2006, 10:21   #8 (permalink)
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Default Re: Grav Chutes?

hmmm, Grav-Chutes. well if going by forgeworld models, they are basically a James Bond style jumpack which sets off it's thrusters just before impact with ground, rather like Spec-Ops parachutes but much closer to the ground initiation (under 50 metres altitude).

Grav-Chutes are also atmospherically dependant so they cannot work in a vacuum, squads deploy from either Lighters, Valkyries, or specially modified Marauders, they are one trick ponies, as no imperial guardsmen wants to carry them once they have depleted their fuel supply, they are set before jumps by tech priests, sometimes they fail, and spectacularly so, exploding on descent due to fuel or failing to "open" painting the drop site with a crimson mist...

my thesis is made up from looking at these fellows...

http://www.forgeworld.co.uk/acatalog...OP_TROOPS.html

well that took me 5 minutes to think up.. so don't take it seriously...
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Old 12 Feb 2006, 16:07   #9 (permalink)
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Default Re: Grav Chutes?

Yeah, my question was mainly based on the FW Elysians - the 'chutes look fantastic, but untill now I had no clue how they would work.

I'm considering wholey new design for my Regiment's "G-CEQ" - I had always planned that they had drawn their name - the Gailai Scimitars - from their unique form of deployment.

My thought - a man-portable parasail, formes slightly like a shallow, wide canoe. Under the "keel" is a conformal, plastic tank holding some form of ingnitable fuel, which feeds two or more jet boosters for anatmospheric landings, with control handles at either end of the main sail (doubling to pull the sail itself).

Thanks for all the input - I'll do some sketches to refine my idea and then post whatever I come up with.
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Old 13 Feb 2006, 02:34   #10 (permalink)
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Default Re: Grav Chutes?

I'm pretty sure they are 1 time use only. The Forgeworld fluff in the newsletter (a long time ago) said they take it off once they land.

To make them I think it is quite simple. Use a SMurf backpack, cut off the vents make a longer, slimmer and angular set with plasticard/greenstuff.
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