- 2 weeks ago
This video combines captivating footage on intriguing facts about planes, aircraft cabins, and the human body's condition during flights, along with an exploration into the rationale behind airlines not supplying parachutes to passengers.
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00:01Have you ever noticed that one of the flight attendants hides their hands behind their back when you enter the
00:06plane?
00:07Are they crossing their fingers for a safe takeoff?
00:10Nah. At this moment, they're counting the passengers as they board.
00:14They have a special little counter for this.
00:16There are lots of stories about how bad airplane food is.
00:21In fact, it's not that bad.
00:23It's your sense of taste that's on the fritz because of the dry air.
00:27It dries your mouth out of all its saliva and dulls your sense of smell, which helps to feel 80
00:34% of what you taste.
00:35So, airline companies add more spices into the food so you can feel the taste.
00:41Seatbelts are located on the stomach because of the turbulence.
00:45When that happens, the plane sort of jumps up and down.
00:48Your waist belt holds you so that you don't crash into the ceiling of the aircraft.
00:52The shoulder seatbelts in the car protect against horizontal collisions.
00:58By the way, flight attendants also have shoulder seatbelts.
01:02It's because they always sit facing the passengers to keep order.
01:07While all passengers are flying face forward, the cabin crew sits backward.
01:12If the plane goes forward sharply, passengers get pushed into seats,
01:17and the flight attendants are held by shoulder and waist belts.
01:21Even if lightning strikes a plane, the passengers won't feel it.
01:25The entire aircraft is covered with an aluminum layer that conducts electric current without passing it inside the plane.
01:33Good thing.
01:34And all electronics and fuel tanks are equipped with additional protection.
01:39Before any plane is released from the factory, all this protection is tested by simulating lightning.
01:46Many passengers get a headache during the flight, especially right after takeoff.
01:51This happens because you're getting up to an altitude higher than Mount Everest in about 10 minutes.
01:56The air up there is thin.
01:58Your brain gets less oxygen.
02:00By the way, chewing gum or candies can help.
02:04Now, the main reason why the seats on the plane are so uncomfortable is profit.
02:09Airlines want to make more money, so they try to fit as many passengers on the plane as possible.
02:15Because of this, there's so little space between the seats.
02:19Two additional rows in the cabin provide 12 new passengers.
02:23Also, companies make airplane seats lighter to spend less fuel.
02:27Seats become smaller and less comfortable.
02:30You can feel cold inside a plane, but when the plane is flying at high altitudes, the conditions resemble those
02:37in the Sahara Desert.
02:38It's all because of very low humidity.
02:41Every hour of flight, your body loses a lot of liquid.
02:45Stay hydrated, but only choose bottled water.
02:49Many companies don't show movies because they can make passengers too sad or emotional.
02:54Even if a movie doesn't have a dramatic story with incredible characters, it can still be heartbreaking for passengers.
03:02The thing is that our body experiences stress, and we take everything close to heart because of the lower oxygen
03:08levels.
03:10Also, we're sitting in seats at a high altitude and very far from home.
03:14Our brain realizes we're out of control of the situation.
03:18This feeling of helplessness can throw a person's emotions out of whack.
03:22So, companies only show positive movies and comedies.
03:27Some passengers say they feel like they can't think straight during the flight.
03:32This happens because of a lack of oxygen.
03:34So, your mind isn't in top form.
03:37Well, better not do any important tasks or make any important decisions.
03:42Your corneas are the one part of your body that doesn't have a blood supply.
03:47The only way they get oxygen is from the air.
03:49So, worsened eyesight and dry eyes are common problems on airplanes.
03:55The best solution here is to take with you eye drops along with gum.
04:01That worsened vision is the first reason the crew dims the lights and asks you to open the windows during
04:07nighttime takeoffs and landings.
04:09Your eyes need to be adjusted to the dimness in case of an emergency.
04:14The second reason is the plane crew needs to be able to see out the window.
04:19There's a theory that hair grows faster during the flight.
04:23Some people notice that little stubble appears on their faces after the flight, even if they shaved a few hours
04:29before they got on the plane.
04:32Anyway, this theory is not confirmed.
04:34Some say the cabin pressure, lower temperature, or even heightened stress levels can accelerate hair growth.
04:42If you experience stress and get nervous right after you step on the plane, your best solution can be a
04:48little training.
04:49Go to the gym or make a set of squats before boarding to prevent stress.
04:55Also, a good workout compensates for the hours you spend sitting still.
05:01Airlines lose and send in the wrong direction several million lost bags a year.
05:06Almost half of the lost luggage is lost because of transfer issues.
05:09They may not deliver your suitcase just because of lack of time.
05:14A plane can fly away before a loader has put your luggage there.
05:18When this happens, they might carry these bags to another flight.
05:21And when your bag goes to the wrong place, it can be taken by other passengers accidentally.
05:27If you want to find your lost luggage quickly, take a photo of it in advance and then show it
05:33to the airport workers.
05:34You can also buy a special GPS tracker and put it in your suitcase.
05:38It works for six days, and you can use your phone to locate your luggage wherever it is.
05:46Airport staff take unclaimed luggage to a special center.
05:49If the owner doesn't show up within three months, the things inside the bags will be put up for sale
05:55in specialized stores.
05:57There, you can find clothes, jewelry, and electronic devices.
06:01And of course, it all comes with a big discount.
06:06The rumbling noise you hear after boarding is not my stomach.
06:09It is luggage being loaded on the plane.
06:11The compartment is right under the cabin of the aircraft, so it sounds quite loud.
06:19Aircraft tires can withstand pressure four to five times more than a plane actually gives them during landing.
06:26The metal wheel is more likely to break than the tire.
06:30Pilots also have different meals.
06:32This is necessary to reduce the risk of food poisoning.
06:36The flight can go well even if one of the pilot feels bad because of a stale burrito.
06:42If two pilots ate the same burritos, they could lead to problems.
06:47Oxygen masks drop down when the air pressure changes.
06:50At a certain height, there can be less air in the cabin.
06:54To prevent passengers from feeling this, they should put on oxygen masks.
06:58When pilots descend to a safe altitude, you can breathe without the mask again.
07:03By the way, masks only have oxygen for 15 minutes.
07:07This is enough for the pilots to descend to a safe altitude on which passengers can breathe.
07:14The wings of most passenger planes are located at the bottom of the plane.
07:18It's built this way because of the engine.
07:21It should be installed under low wings because it's closer to the ground and easier to repair.
07:27Another reason is that the wings should take a big part of the blow during a bad landing.
07:32And if the plane falls into the water, then the wings become a life-saving pillow.
07:38Fuel tanks installed in the wings are empty after the flight, and it helps to stay on the water too.
07:44The wings of cargo planes are located at the top to make it easy to load the cargo
07:49since the hull is located very close to the ground.
07:52Also, it helps to avoid getting debris into the engines in case when airfields aren't clean.
07:58Plus, this wing location has less aerodynamic resistance during the flight.
08:03Little triangles on the aircraft walls are special labels for flight attendants.
08:08The triangles mark special windows.
08:11You can see flashing indicators through these windows.
08:14It signals the landing gear is retracted and the flaps are closed.
08:18But for ordinary passengers, this is the place with the best view of the wings.
08:24Turbulence is a common thing during a flight.
08:27But usually, it's so insignificant, most passengers don't even feel it.
08:32Strong turbulence is rare.
08:34By the way, turbulence is just hot and cold air affecting a plane.
08:39For better understanding, imagine a big balloon people fly on.
08:44Remember the flamethrower installed under the ball?
08:47It heats up the air and the hot air raises the ball up.
08:51So, turbulence is the hot air created by nature.
08:54And it makes the same thing with a plane that it makes with a balloon.
08:59Also, turbulence can occur if the plane gets under the hot air stream left by another plane.
09:08I know, right?
09:09Why couldn't we just strap a huge parachute to the entire plane?
09:12You bring up a great point.
09:14With some airplanes malfunctioning, why don't we just make them float safely to the ground?
09:20I mean, if we can drop a human being on a parachute, why can't we do the same for planes?
09:26Well, my friend, the answer's simple.
09:29Weight.
09:31Parachutes with the power to help float a jumbo jet would be extremely heavy.
09:34And that extra weight would cut into the number of seats for travelers.
09:38And let's not forget that most commercial airplane malfunctions happen during takeoff or landing.
09:43And a parachute couldn't be of much help anyway.
09:47Can you imagine how many parachutes the size of a football field we would need to safely land an Airbus
09:53A380?
09:54That thing supports about 850 people and is about 400 times heavier than a small personal aircraft.
10:02Plus, adding more weight to the plane would mean fewer people on board each flight.
10:06That translates to more flights.
10:08Just because there would be fewer seats on board, it doesn't mean people don't have to travel places, right?
10:14Well, that would mean more takeoffs and landings.
10:17And that makes the possibility of even more crashes way bigger.
10:21Now, the idea isn't all bad.
10:24There are whole-plane parachutes available for lightweight aircrafts.
10:28The chute is located in the main body of the aircraft and can be actioned when the pilot triggers a
10:33handle somewhere in the ceiling.
10:35A big manufacturer of these devices is based in Miami.
10:39The founder thought of such a project after a glider he was in began spinning uncontrollably.
10:44And he ended up plunging into a lake.
10:46He eventually made it after this unfortunate event, but he shifted his ambitions to ways he could make flying in
10:52an airplane safer.
10:53But what about parachutes for each passenger on board?
10:56Could we add those on board each flight to heighten the safety standards?
11:00Well, that would be extremely tricky in case of an emergency.
11:03Most of these events involve tens, if not hundreds of people.
11:07Panic would quickly set among people on board.
11:10Nobody would be able to use their parachutes, not to mention the landing itself.
11:15Even trained jumpers find it difficult at times.
11:17Most people boarding planes day to day don't have such experience.
11:21So the best way is to shed weight.
11:24One solution would be to get rid of the bulkiest parts of an aircraft, like the wings or engines, once
11:30the parachutes are triggered.
11:31That way, only the main body of the airplane would be rescued, which includes the passengers.
11:36That sounds like a much better idea than having hundreds of panicked passengers trying to figure out how to use
11:41a parachute.
11:42And in the end, there really aren't many instances where a passenger parachute would really save a life.
11:47For starters, it would need to be during the day.
11:50Otherwise, you have no idea what you're doing.
11:53It would definitely need to be over a piece of land.
11:56Parachute or not, landing on water is not really a good idea.
12:00So, let's just stick to our seatbelts and hope for the best.
12:04How about pilots?
12:05Do they or should they have parachutes available during each flight?
12:10You see, flying a commercial plane is a whole different ballgame than your average skydiving adventure.
12:15When you're up in the air, way up at thousands of feet, the temperature is so low, and the air
12:21is so thin that jumping out of a plane would be a terrible idea.
12:25You'd freeze your toes off before you even had the chance to pull your parachute cord.
12:29And let's not forget about hypoxia, which is just a fancy way of saying that you can't breathe properly at
12:35high altitudes.
12:36That's why planes have oxygen masks for their passengers and crew.
12:40But, skydivers at that height would need their own oxygen tanks, which is not exactly practical.
12:47Plus, have you ever tried to jump out of a plane mid-flight?
12:50It's not like there's a handy little door for you to hop out of.
12:54Commercial planes are not designed for skydiving, and attempting such a stunt would be downright dangerous.
12:59So, while it might seem like a good idea to have pilots carry parachutes just in case, it's just not
13:05practical for the type of flying they do.
13:07They're better off sticking to their day job and leaving the skydiving to the professionals who know what they're doing.
13:14Parachutes are not just for jumping out of planes, but are also used to reduce the speed of motion of
13:18objects in the atmosphere.
13:19In most cases, they are made out of strong cloth, like silk or nylon, and are designed to create drag
13:25and slow down an object's motion.
13:27But what makes a good parachute?
13:29Well, it's all in the fabric.
13:31A parachute's cloth should have high breaking strength, tear resistance, elasticity, and air permeability.
13:38The warp and filling yarns are specially cut and sewn, each in a particular direction.
13:44This helps to prevent any tears from spreading further.
13:48Parachutes are made from various raw materials, such as canvas, silk, dacron, kevlar, and nylon.
13:55Ripstop nylon is a popular choice due to its lightweight, strength-to-weight proportion, waterproof, and tear-resistant qualities.
14:02The manufacturing process of parachute fabric is quite intricate, with steps involving assembling, finishing, and rigging.
14:10During assembly, the ripstop nylon cloth is cut to pattern pieces by a computer-guided mechanism, or manually using a
14:16round-bladed electric knife.
14:19The trapezoidal panels are sewn together to form a wedge-shaped device.
14:23Then, a number of these devices are sewn together side-by-side to form a circular canopy.
14:30Each panel and seam is carefully inspected for defects, pleats, or incorrect stitches per inch.
14:36With the right materials and careful construction, a parachute can safely land a person on the ground in case of
14:42an emergency.
14:43Next time you see a parachute, remember all the hard work and attention to detail that went into making it.
14:49Speaking of amazing parachutes, a little company from Devon just made history.
14:54They are the masterminds behind the special high-tech parachute fabric that helped NASA's latest rover, Perseverance, safely land on
15:02Mars.
15:02The challenge was not easy.
15:04They needed to create a lightweight fabric that could withstand extreme heat and carry a spacecraft safely to its destination.
15:11But after 15 years of hard work, they did it.
15:14The unique fabric was developed using a high-tenacity nylon yarn spun at high speed.
15:19And after being washed, colored, and processed with a special finish, it was ready for the big test.
15:24The material was then sewn into its parachute form in the U.S. and tested in the world's largest wind
15:30tunnel.
15:31But the best part of the story was when the director of the company's woven fabric department saw the landing
15:37on Mars.
15:38He basically lost all cool when watching his product on TV, safely making it to the Red Giant.
15:45How did they manage to grab such an amazing gig, you might wonder?
15:48Well, the company was approached by NASA after exhibiting their work at industry events in the U.S.
15:53And gee, did they deliver.
15:55They created this bespoke fabric that allowed the Perseverance rover to make a soft landing on Mars.
16:01You know, should you ever find yourself on Mars and see a parachute lying around.
16:05Don't forget to thank these amazing people and their cool parachutes.
16:09Their piece of fabric will stay there until someone comes and tidies up the planet.
16:14Most people credit famous inventor Leonardo da Vinci with inventing the parachute.
16:18But this is, in fact, a myth.
16:20In 1968, some researchers were poking around some ancient Renaissance drawings
16:26and found some sketches that looked just like Leo's parachute design.
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