Parachutes

Drop any object from a plane and the downward force due to the mass will eventually be matched by an upward force due to air resistance (terminal velocity). This terminal velocity depends on the objects drag coefficient, what the parachute does is present a drag coefficient sufficient to give the required terminal velocity for landing .

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You need no more than say 6 metres / second landing velocity, effectively this is the terminal velocity with the chute open.

Using body mass of 80 kg and acceleration due to gravity of 10 (m/s)/s,

this gives a downward force of ( 80 * 10 ) 800 newtons.

To balance this at landing velocity, you need a drag coefficient calculated from:

800 = velocity2 * drag coefficient , so:

drag coefficient = 800 / velocity2 = 22.22

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Compare this to the pre chute deployment velocity of around 80 metres / second, giving a drag coefficient of:

drag coefficient = 800 / 6400 = 0.125

Boogie Pimps - Somebody to love

Because nylon is a strong fiber that can hold a strong amount of weight

Yes. There were many occasions when troops were parachuted in.

A parachute's material affects its drag coefficient, which in turn affects how quickly it slows down the descent of the object it's attached to. Lighter materials with higher air permeability can slow down the fall more efficiently, leading to a slower descent speed. Heavier materials or those with lower air permeability may result in faster descent speeds.

The T10 and T10 Modified chutes are not square. What you're referring to is the airfoils used by freefall and HALO parachutists. Those are not made by the military - they're sourced from civilian companies who manufacture parachutes for civil parachutists. What the specific specs are for the military contract airfoils.. that information isn't made available to the public.

silk is no longer used for making parachutes. It was a good material before nylon came along, but no parachutes are made from silk anymore. Not for decades.

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When it WAS used, it was because it was very light, extremely strong, was not bulky, and could be woven in a very tight weave.

The orbiter would detach and land in the ocean shortly after take off.

There are many company's out there which manufacture parachutes/canopies for skydiving, base jumping, speed flying..... Though in order to use one without seriously hurting yourself you would need to start out with a skydive license

The parachutes in World War 2 were reusable except when they were in enemy territory. They had to bury their chutes then.

The Airborne Rangers, an example is 101st airborne.

On ordinary commercial aircraft there are none.

White for Allies and yellow for Germans

Some were colored to identify cargo container contents or camoflaged to hide.

Because if the authorities think he's going to take a hostage, they won't risk giving him a faulty parachute.

Not for anyone on commercial air liners

no, unfortuanaltley there would be no point, if a planr was to crash or fall from the sky, it would be inpossible for you get out of your seat open the door of the plane and jump out, the forsce of plane falling would make it impossible to move about the aircraft, and if you mannaged to get the door open the forse of the pressure would cause everything and everyonr to be sucked out of the aircraft, then there is the worry of the engines, but you have nothing to worry about, avaiation is the safest form of transport and it yoou would have to fly every day for 1 million years to be at cabce of a plane crash!!

Well, first off, if the engine stalls in a small airplane, the airplane can still glide, and pilots are taught to respond immediately to an engine failure by troubleshooting what might be wrong, going through a checklist, and then preparing for an emergency landing. ("Stall", by the way, refers to the wings of the airplane, not the engine... but that's a whole 'nother question.) In any case, pilots of the vast majority of small aircraft don't wear parachutes (except when doing aerobatics). The primary reason you'd want to leave an airplane in an emergency is because the airframe is damaged and the airplane is uncontrollable--which is an exceedingly, exceedingly rare occurrence, although for this reason, pilots performing aerobatics are indeed required to wear parachutes, in case they exceed the limits of the airplane's structure to the point where it's damaged and unflyable. It's pretty darn hard to do. But if she were to parachute out in this case, she'd land on whatever she happened to be over when she jumped. DCE

there are about 100,000 accidents a year for sky diving

They can be if you pay a little extra.US parachutes are unflameable.

yes...you simply need to be really really drunk so you dont tense up your body and dont feel much of the shock when you hit the ground....being high helps to....