Questions tagged [parachute]

A device made of thin material designed to unfold and create drag, typically used to arrest the descent of a falling object.

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3answers
74 views

Why/how is a downplane parachute configuration aerodynamically stable?

One of the most dangerous situations possible in skydiving is a so-called downplane, where both the main and reserve chutes deploy, and they shift outwards to the sides of the parachutist until ...
8
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1answer
299 views

In what emergency situations would a pilot bail out of a helicopter?

The Hiller UH-12 POH actually mentions “Emergency Exit in Flight” as an emergency procedure. What emergencies would make the pilot do this and why don’t other helicopter POH’s mention this?
7
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1answer
634 views

Why does an aircraft have to be flying straight and level to facilitate a jump?

In the other questions about parachutes on this site, it has been stated that the aircraft would have to be flying straight and level to facilitate a jump. However, there were quite a few pilots ...
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0answers
108 views

Why don’t most aircraft have emergency braking parachutes? [duplicate]

Braking parachutes were standard on first-generation jetliners, but have since fallen almost entirely out of use except on military aircraft; essentially the only civilian aircraft nowadays to still ...
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1answer
796 views

Why commercial planes do not provide parachutes? [duplicate]

In case of emergency I think parachutes would be more safe than life-jackets.
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0answers
60 views

What is the specific FAA regulation with regards to a pilot dropping jumpers into a solid cloud base? [duplicate]

What is the FAA regulation with regards to a pilot dropping jumpers into a solid cloud base? I saw some parachute jumpers come through a solid cloud layer with a base at around 1300 AGL. They landed ...
29
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1answer
6k views

What are the major causes of parachutes failing to work?

What are the top causes of a parachute failing to work? For "parachute", I mean primarily sporting parachutes, such as used in skydiving, but information about military (paratroop) chutes, ejector ...
2
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1answer
362 views

What does the acronym PDA stand for in the aviation domain

While reading an article about Hang Gliding reserve parachutes, I came across the acronym "PDA". The article seemed to imply that this is a type of parachute and a further google search seems to ...
3
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1answer
139 views

Is a French PAC skydiving license equivalent to an AFF license?

I am planning to do a skydiving course and I was thinking of doing the course in France. That means, I would get a stage PAC license course instead of AFF. I want to know how PAC is different from AFF ...
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1answer
152 views

What is the definition of “occupant” in 14 CFR 91.307?

Does a solo pilot performing aerobatics constitute an "occupant" for the purposes of requiring a parachute per 91.307(c)?
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1answer
327 views

What is the aerodynamic reason military parachutes are square?

Until these, I had only ever seen round military parachutes. The slots also differ between paratroop and cargo.
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2answers
2k views

How do most fighters slow down after landing?

I understand that many fighters use drogue parachutes and wheel brakes. But aren't there other methods of slowing down after touchdown?
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1answer
156 views

What are the equations of motions for parafoils?

I want to use the following equations so as to describe the motion of parafoil $$\left[ {\begin{array}{*{20}{c}}{\dot x}\\{\dot y}\\{\dot z}\end{array}} \right] = {V_a}\left[ {\begin{array}{*{20}{c}}{\...
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1answer
368 views

The FARs “require” the wearing of parachutes for certain types of maneuvers. Is parachute training required?

FAR 91.307 (c) requires that each occupant of an aircraft must wear an approved parachute during the execution of certain types of maneuvers (e.g., more than 60 degrees of bank or or 30 degrees pitch,...
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8answers
23k views

Why don't pilots parachute from small planes that are in distress?

There was another question that asked why commercial flights don't have parachutes. The almost ubiquitous response was that the parachutes would be useless because: Most accidents with commercial ...
16
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2answers
3k views

What is the equivalent height of a parachute landing?

I understand that this will vary depending upon the equipment used, the bodyweight of the jumper, barometric pressure etc, but what is the approximate equivalent height of landing from a parachute ...
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0answers
51 views

What pose is best for to assume before hitting the ground for survival after failed parachute? [duplicate]

The title says it all. Assuming one is falling down on a hard perpendicular surface after reaching terminal velocity, what pose provides the highest chances of survival? My guess would be one of the ...
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4answers
51k views

If my parachute fails to open, why should I aim for land rather than water?

I was watching these 'what if' parachute failure videos on YouTube and everywhere they say do not choose water over land. Why should we not choose water and what happens if we land in water? One ...
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1answer
3k views

Why is there a difference between military parachutes and those used for skydiving?

A couple hours ago I was watching a youtube video where skydivers jump using the skydive parachute, and after that, a military training where the soldiers jump using "old" type parachute, the dome ...
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2answers
606 views

Could D.B. Cooper know where he was landing, when he parachuted?

The background story is a hijacking that happened 1971. The hijacker, referred to as D.B. Cooper, jumped from a Boeing 727 using the aft airstair. He knew in what air corridor he was (Victor 23, ...
3
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1answer
395 views

Is there any civil aircraft that decelerates with a parachute? [duplicate]

Some previous generations military aircraft decelerate with a parachute to decrease landing distance: Israel Aircraft Industries Kfir landing with a parachute (source) It this something found on any ...
1
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1answer
240 views

How much does a drag chute system weight?

How much weight does a drag chute add to a plane? Let's take the Tu-114 as an example. This plane has a loaded weight of 68.1 tons (I could not find a max landing weight figure). I could not find how ...
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2answers
327 views

Can Ballistic Parachute Recovery Systems be safely deployed in a storm?

Suppose the plane is in a thunder storm, and the pilot loses control of the airplane. Would deploying the ballistic parachute be a safe option? Meaning, is it likely that everyone would come out alive?...
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14answers
55k views

Why are commercial flights not equipped with parachutes for the passengers?

I understand that commercial flights are equipped with life vests. I also understand that most military jets are equipped with ejection seats. It may be costly and technically challenging to equip ...
12
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1answer
2k views

When flying a glider in emergency situation, would it be more safe to bailout or to land in a forest?

Is there any consensus when it comes to this question? If it depends then it depends on what exactly? I'm interested in the decision making in this kind of situation.
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4answers
561 views

Is it possible to drop a payload via anchored parachute?

Apologies if this is not the proper forum for this question - Here's my situation: I'm trying to drop a payload via parachute with some accuracy. I'm worried that in the above setup, the line ...
30
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1answer
3k views

How robust are modern parachutes to folding errors, wear, or other problems?

My 8 year old recently got a guided tour of the parachute-packing station at the local sport airport. Afterwards she asked me what happens if the parachute is improperly packed. Since it seemed to me ...
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0answers
117 views

Why no safety measures for air passengers? [duplicate]

Why have parachutes not been provided/safety measures taken in passenger carrying aircraft in case of a crash, so that at least they have some chance of survival? It's like you are stuck in a bottle ...
7
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1answer
312 views

Is there a standard text for parachute design?

In some technology areas, there are "standard" texts - for GA type aircraft design, I think of Stinton's "Design of the Airplane". For radar, Skolnik's "Radar Handbook". Is there an equivalent text ...
8
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1answer
2k views

Do glider pilots have to wear parachute in countries where mandatory even if flying with a foreign glider?

Today I saw this video on Vimeo that shows a pilot flying a new solar glider (N- registered aircraft) in Italy without wearing a parachute (I believe in US is not mandatory). Actually here in Italy ...
16
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3answers
3k views

Why is the drogue parachute jettisoned on the runway?

Why is the drogue parachute of a military plane jettisoned on the runway? Why not drag it to the parking area for safe removal, inspection, and repacking?
23
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2answers
6k views

Do test pilots on commercial aircraft wear a parachute?

I was watching a video of the first A350 flight. At 0:35 one of the pilots appears to be wearing a helmet and what looks like a parachute. Is that true? Do pilots on maiden flights wear such a kit, so ...
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2answers
1k views

I'm thinking of building a balloon-launched glider, is this idea plausible?

So, I know nothing about aviation. I'm a student studying maths and computing and I feel like building a high altitude glider controlled by a Raspberry Pi and Arduino as a personal project. First ...
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2answers
3k views

What is the purpose of the hole in the Cirrus SR22's parachute?

Watching this video I notice there is a big hole in the middle of the parachute, at its top when deployed. This feature seems to exist in other smaller parachutes. For me, it seems that air can ...
22
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3answers
3k views

Do any commercial airline models have a parachute at rear to help in landings?

Some land-based fighter aircraft have a drogue-chute to help them slow down during landing. Do any current models of commercial aircraft have a similar mechanism? Secondly, would such a mechanism ...
42
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4answers
8k views

Do unused parachutes need to be repacked? If so how often and why?

I was reading some military fiction and saw a comment that army airborne operations were required to repack all parachutes every ninety days, allowing parachutes that were due to be repacked soon to ...
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0answers
230 views

Why is it that only light aircraft are equipped with airframe parachutes? [duplicate]

Why is it that only light aircraft (like Cessnas and Cirrus') are equipped with airframe parachutes? Isn't it possible for at least slightly larger aircraft to have this feature? And isn't there a way ...
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0answers
89 views

Why are there no parachutes to carry the aeroplanes in case of serious accidents? [duplicate]

Sometimes I wonder why the manufacturers do not design a big parachute to carry the aeroplanes when serious accidents occur. Perhaps the high cost is the reason?! But is it more expensive than a human ...
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4answers
2k views

How does wake turbulence affect parachutists?

If one were to parachute out of a jumbo jetliner, would wake turbulence from the plane be an issue? A 747 for instance produces much more wake turbulence than the smaller planes usually used to drop ...
22
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5answers
4k views

What should a pilot do when flying in the vicinity of parachute jumpers?

There are several airfields nearby where parachuting activities routinely take place. How far away is considered to be a safe distance from the airfield when flying past it en-route to another ...
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2answers
1k views

Can an aircraft re-pressurize at high altitude?

When parachute jumps are performed from 32000 feet (or between 28000 - 30000 feet), once the jumpers are let out from the aft (cargo area), does the aircraft need to change altitude (e.g. descent)? ...