Why can’t we fly a plane into space ?

Why can’t we fly a plane into space ?


Why can’t we fly a plane into space what stops it from just flying higher and higher until it in space. well there are several issues but assuming we are in something like a normal jet airliner then one of the main problems is the air or lack of it as we get closer to space. a plane flies because it is propelled forward the wings which shaped to make the air flow faster of the top of them rather than the bottom generate lift as the plane goes faster the wings create more lists when the lift is greater than the weight to the plane it will climb into the air. As our playing climbs higher and higher into the atmosphere the air becomes less and less dense the plane to fly faster to create more iift until eventually it reaches an altitude where the engines either cease to function correctly because of the lack of oxygen or the air is too thin to create enough lift. Just as we need air to breathe then the engine need oxygen to burn to create thrust to propel the plane forward just engines however engines can work at higher altitudes than people. We humans have a limit about 8,000 meters or 26,000 feet above which is what climbers call the “Death Zone”, this is where there is not enough oxygen for humans to survive for sustained period. The summit of Mount Everest is 29,000 feet high in the air density there is about 33% of that at sea level. This means that with each breath you take you’re only getting 33% of the oxygen. If you want to stay at this altitude without additional oxygen you would suffer from a condition called hypoxia were due to a lack of oxygen to the body starts to slow shut down and die. At 12,000 meters or 40,000 feet which is the upper limit for most modern airliners the air density is about 18% of that at sea level. If you were in a plane that had a rapid decompression at 40,000 feet you’ll have about five maybe ten seconds to get your emergency oxygen mask on before you became unconscious. The highest flying jet plane in level flight was the Lockheed SR-71 blackbird with a height of 85,069 feet 42,929 meters and where the a density is just 2% of that sea level. At that height it’s traveling at mach 3.2 or 2190 miles an hour. The SR-71 pilots had to wear a full pressure suit with its own oxygen supply in case of a cockpit decompression or emergency ejection and this was put to the test when you 1966 an SR-71 piloted by Bill Weaver disintegrated that mach 3.1 at an altitude the 78,000 feet as it was performing a test flight to ironically optimizing performance. At that altitude your blood will boil in a similar way to when you open a bottle of fizzy drink as the nitrogen in your blood to the gas in the low-pressure atmosphere. The pressure suit work and Weaver survived the descent from 78,000 feet but tragically the navigator Jim’s Zwayer died of a broken neck resulting from break of the plane. Now while you would think that the SR-71 soft to get into space you need to reach what is called “escape velocity” this is where you are traveling faster than gravity is pulling you back to work and that is 25,020 miles an hour or 40,270 km/h and and if that wasn’t a problem there’s also to recognized altitude at where space starts at 328,000 ft or 100,000 meters well over three times the highest flight of the SR-71. Normal jet engines like those in the SR-71 have a maximum air speed limits for around about Mach 3.5 or 2695 miles now beyond that the air pressure and temperature becomes too high for compresses and the engine to effectively. For hypersonic speeds, experimental unmanned aircraft like NASA X-43 use what is called a scramjet engine. The X-43 is currently the fastest free flying air-breathing aircraft in the world having flown at mach 9.6 or 7310 miles an hour in November of 2004. Scramjets do away with the turbine compressors of the jet engine so they have no moving parts instead they use shock waves in the engine to compress the raise the temperature in the engine to burn fuel and create trust an in theory they can fly up to Mach 20 and possibly beyond. The problem with this is that they won’t work at speeds of less than around Mach 5 so they have to be brought up to speed by rocket engine booster before they can operate, which is how NASA x43 worked. They also won’t work in space because there is no air with oxygen in to combust the fuel So this why space vehicles are launched by Rockets. Rockets can have much more power and can operate from a speed of zero on the launchpad to Mach 33 and beyond which is the escape velocity of Earth. One of the earliest experimental space planes was the North American X-15 which reached a height of 353,000 feet or 107,000 meters 1963 and was powered by a liquid rocket danger but it had to be carried up to 45,000 feet attached to the underside with B-52 bomber before being released. Then of course we’ve had space shuttle the Soviet version of the Space Shuttle the “Buran”, SpaceShipOne and the Boeing X-37, all of which were examples of space planes but we’re really just rocket powered gliders. Rocket differ from Jets because they bring their own oxygen to burn the fuel and don’t rely on the atmospheric oxygen. This means that they can working space equally as well as in the atmosphere. The problem with rockets is that because they need to bring the oxidizer with they makes them very heavily. Look at the space Shuttle for example, the external fuel and the tanks to hold it along with the two solid rocket boosters weighed 1,940 metric tonnes at liftoff and that’s without the space shuttle. All of which has to be carried along with the shuttle to the edge of space where they are they jettisoned. The maximum payload the shuttle could deliver it into a low earth orbit was 27.5 metric tons, which as a payload fraction is just 1.3% of the total take off weight. Rockets however can create huge amount of power, so they can achieve the speed that is need to escape the pull of gravity and go into orbit and Beyond. But what of the future, will we ever get planes that can take off from an aircraft runway, fly into space and then return back to a runway. There are still considerable technical issues to overcome but one design which looks promising is the Skylon. This is an SSTO or Single Stage To Orbit design meaning that unlike a rocket, it stays in one piece rather than having a separate main booster stage which detaches and return to Earth and then a smaller second stage which one goes on to orbit. The key technology makes Skylon work is the SABRE or Synergetic Air Breathing Rocket Engines. Now these are kind of hybrid jet rocket engine which can take off like a normal jet engine, breathe air upto 93,000 feet and at a speed up to Mach 5.4 when then switches to rocket mode and can fly into space for up to 800 kilometers 500 miles above the earth. It would then return to the Earth’s atmosphere and land as normal air-breathing plane to be checked, refueled and ready for launch. Because it uses more efficient engines and the lift of the wings it would use only 20% of the fuel compared to a conventional rocket. It would still need to bring it oxidizer for the rocket portion of the journey but a lot less that will be required for a normal rocket. This allows for a larger payload when compared to the total weight around 5.5% compared to the shuttles 1.3%. Unmanned flight test of the Skylon could be happening by 2025, if all goes well but a potentially large flying in ointment is the recent advances in reusable rockets like SpaceX Falcon f9r and the Blue Origin New Shepherd. These could make the development costs to the Skylon expensive for satellite deployment and supplying the International Space Station. One thing which could come out though, is a rocket less version of the SABRE engine which could make hypersonic air travel more a viable option than using a scramjet. Only time will tell but this is an exciting time for both the future of air and space travel, so we may yet see the plane that can fly to space. So as always thanks for watching and please subscribe, rate and share.

100 comments

  • Really Happenings

    Why can't we drive cars underground?

    Reply
  • Baron Von Stanislaw

    Whaa was that PDX at the beginning?

    Reply
  • Lazaro Valle

    Oh I feel smart.

    Him: Says it in feet
    Me: Ah yes
    Him: Meters
    Me: Ah we meet again metrics system
    Brain: What the hell is a meter?

    Reply
  • Sh Kh

    Well the main lift is not created by the method you stated (method described still contributes to lift), rather by having the with at an angle and hence to hence to any action there is an equal and opposite reaction. Boggles my mind that this critical aviation idea is still misunderstood.

    Reply
  • Mike Becket

    God are you stupid firstly there us no bloody air and every one would die from re entry to to name a couple small reasons

    Reply
  • Andrew Davies

    Without watching it

    1. Plane can't go fast enough.
    2. Jet engines don't work in a vacuum.

    3. It's not strong enough and would cave in?

    4. You can't steer a plane in a vacuum using rudders and flaps

    Now I'll watch the video lol

    Reply
  • Issa Mitri

    The answer here
    https://www.youtube.com/watch?v=dM7ukpCyYG0

    Reply
  • Chandramouli Roy

    Maybe you can come up with the Vimanas/UFO 's and share the real deal.They have been here for eons now,haven't they?

    Reply
  • HunterXray

    Ok FEers, pay attention.

    Reply
  • Lmgamer mese

    Answer: Y o U r H e A d W i L l E x P l O d E

    Reply
  • Kelly Shaddix

    Was this cat in Mad Max 2?

    Reply
  • Kelly Shaddix

    The rig? How is she? Scene

    Reply
  • steve bilton

    The principle of all flight requires something called thrust. Once any object has been thrust into the vacuum of space without any resistance then that object would continue in a straight line until otherwise deflected. Hence technically there is little to stop a plane with adequate thrust, and a modicum of strengthening and pressurizing, from going where no man has gone before. That is unless the high levels of radiation grill the plane and its occupants. Is this thinking correct?

    Reply
  • jvazquez

    Another method of propulsion is needed one that doesn't require oxigen and don't need refueling like atomic engines in submarines

    Reply
  • ken mcdade

    That's awesome that magic gravity

    Reply
  • Hari Kishore

    I'm an aeronautical engineer. I'm ignoring this video for two years. Finally had to click this.
    Are you hearing.. YouTube??

    Reply
  • John Greene

    Why can’t the British pronounce an “ah” vowel sound, as in M(ah)ch 5??

    Reply
  • Mauricio Alejandro

    Uncle Fester sure knows his stuff!

    Reply
  • Gust I

    I‘m pretty sure it‘s called oxygen, not oxyen…😂

    Reply
  • steve jessemey

    Why not change the engines ? Seriously how many years have we been using Jet engines now ! I am positive that someone out there has many ideas about this matter..Or why not just use Alien UFO Technology that we allegedly already have , say at Area 51 .

    Reply
  • check ya chin

    Really?

    Reply
  • Paul Makinson

    You mean air breathing planes.

    Reply
  • KLJF

    there is no such thing as space .

    Reply
  • gengiz

    Couldn't the engine be injected with onboard oxygen and the wings extended to create more lift?

    Reply
  • Sonu sonny Singh

    Why some fighter jets can deliver nuke and most can't !?
    Why f35 has no other name like f16( falcon),f15 ( Egale) etc

    Reply
  • VN Balakrishna

    Brilliantly analysed. Great work.

    Reply
  • Ken Grantham

    Love your videos. Love your shirt.

    Reply
  • John Zogu

    It's true the earth is flat.

    Reply
  • SeedPlanter

    What is…Same reason we cant fly a rocket into space? I will take "Government brainwashing "  for 600 Alex

    Reply
  • Jardiel

    I guess he thinks that only Americans watch his videos, USE INTERNATIONAL METRIC SYSTEM!!!!

    Reply
  • Griffon 327

    scram jet ? if you cannot go to space in it ? and engine doesn't become operational till mach 5 ? then it can only be used as a weapon to deliver a tactical nuke at speeds faster then a incoming anti missile can intercept? what a stupid fucking design.. a rail gun can take one out of advanced laser for those weapons mach 10-20 might not be impossible to overcome because lets face it at those speeds there is no such thing as evasive maneuver as even the slightest course correction would disintegrate the scram jet and an unarmed payload (un exploded nuke) would then become the property of anyone that recovers the wreckage.. scramjet = useless technology

    Reply
  • Adam Augustus

    because there is no air

    Reply
  • RayRay 711

    The 3.2K people who disliked this video ought to go and try to fly their planes into space.

    Reply
  • A Dempsey

    Cause the earth is flat

    Reply
  • Gawain k

    Very interesting one can.only hope we can get or acquire the means of elevated space travel and earth bound travel by own scientists physics . Or by possible outta world means

    Reply
  • atalia kgwale

    This man is so cute

    Reply
  • Enigma Gaming

    The way he explained lift was wrong

    Reply
  • Workingclass Person

    Ya I always pondered this question. I feel smaller now 🙂

    Reply
  • DirtyHairy1

    @2:00 seeing the test subject having seizures before he can get the breathing mask on puts me in serious doubt about the preflight instructions you get on a plane

    Reply
  • luciano rochelle

    wht hapend with ion trusters?

    Reply
  • N!Mm0

    Why can’t planes fly in space?

    No air.

    Goodnight.

    Reply
  • briscoerob

    How do you pronounce “mac and cheese” lol

    Reply
  • alphagt62

    Why have I always heard that escape velocity 17,500? In fact, isn’t asynchronous orbit 22,000? Or did I miss something?

    Otherwise a kick butt video! Much great info packed into this episode!

    Reply
  • SONTU BANERJEE

    Due to lack of oxygen.

    Reply
  • Javier Simental

    It can't happen because
    1-Space don't exist and
    2-Combustion can't happen in a vacume….. Do your research Sheeple.

    Reply
  • Joseph Argibay

    No oxigen

    Reply
  • The Mourning

    R U kidding me? Getting a plane into space isn't a problem with a rocket its the steering system that makes this one of the most retarded waste of thought I have ever heard

    Reply
  • MUSIC LOVER

    We can. But we cant fit many people in it as the entire plane has to be fitted with oxygen & fuel tanks.

    Reply
  • Samuel Barreto

    just an observation: as the plane enters thin air it doesn't necessarily need to go faster since the rarefied air poses less resistance so it kinda cancel each other

    Reply
  • A random boi that likes Trailmakers

    Lol

    Reply
  • King Roosta

    We could, but the powers that be, will let not let the secret out, they can't afford to do that. You know what I mean!

    Reply
  • anti Kecurangan

    Everybody already know what you are talking about, what a useless video for adult, but maybe usefull for our kids

    Reply
  • Kixx Spyster

    Wrong Rockets don’t burn in a Vacuum also it has nothing to push against for movement, little spits of air isn’t going to move an object either as air cannot exist in a vacuum either.. ask any professor cause that what I did

    Reply
  • Patrick star

    This guy would be perfect for a scary movie

    Reply
  • Jason Wallace

    Because of the firmament. The same reason they haven't been to the moon.

    Reply
  • BanBan Arneil

    Its hard fly a plane in spice

    Reply
  • Orfa iarumas

    Stay tuned for next episode as we answer "why can't submarines work on land".

    Reply
  • AntPDC

    Finally, an explanation for maths numpties, like me. Thank you.

    Reply
  • Zavier Rose

    Bruh you answered the question in 2 min bro .. no need for the extra hooplah!!

    Reply
  • Lycan 777

    His knowledge and the way he breaks it down for us is impeccable! Fantastic teacher, thank you for feeding my brain the knowledge I was seeking

    Reply
  • Michael Szczys

    Can’t fly planes in space cause no air. I always wished they would fly a Shuttle to the moon with lunar lander in trunk

    Reply
  • Khloe Rabnta

    Because there’s no air…. lol

    Reply
  • R Trinidad

    What B.S. First, in 2017 NASA said we all live in an enclosed environment ( Encased inside a dome ), and we can not fly outside low earth orbit !! Also, rockets and aircraft motors will not work in space because space is a vacuum. Our Airforce can fly their jets because their rocket motors have air to push off of to make them move forward but above low earth orbit their is no air, So, we never went to the Moon nor are we going to Mars. Read about the dome in the first book of your bible and then wake up to the NASA lies.

    Reply
  • Charlie Carroll

    Who else thinks that space planes are better to go to space in then a normal plane?

    Reply
  • alam md. sam sul

    can a plane fly in a crt

    Reply
  • 1973poty

    Cause Yahweh won't let us.

    Reply
  • Jason Parker

    A turbine jet needs air to compress and burn the fuel, duh. Y does it tale 10 minutes of explanation when it should take 10 seconds and so common sense?

    Reply
  • T3hChaerlz

    Thats what i thought. It's obvious planes dont use an onboard oxidisor.

    Reply
  • Mike Milburn

    This dude. Its pressure, the answer is pressure. All by itself. Air is everywhere, even in water. Plans don't fly in water because of pressure. The air is there and a jet liner can be fitted with such propulsion but pressure would crush it. Same thing above.

    Reply
  • dayeeoliver

    No One asks this stupid question. I'm positive pal

    Reply
  • Jamie McLain

    An F-15 came close. Actually shot down a satellite.

    Reply
  • David Brown

    Then how come on star trek they take off and fly into space.?

    Reply
  • 3DCop3

    Огромное спасибо! Жаль что нет версии на Русском языке. Но с субтитрами тоже норм.

    Reply
  • Charlie Cross

    This is a stupid fucking question are there really morons who don't understand this?

    Reply
  • Alexander Karl

    there is no space dumbass lol

    Reply
  • pulaun pulaun

    the airplane blue ocean

    Reply
  • Ernesto Bondoc

    Plane cannot go, even space rockets and space ship to outer space since they cannot pass thru the low earth’s orbit…. but actually it is the Firmament, a molten glass metal like bowl or dome enclosure nothing can pass thru…

    Reply
  • Thaworn Lorga

    A great teacher who makes things easier to understand.

    Reply
  • James Bruzgis

    BC THERES NO AIR

    Reply
  • Mark. G

    Air

    Reply
  • Jonny B

    We need a submarine for that.

    Reply
  • Kalle Klæp

    I'd wish this gentleman was my science teacher back in school. I could listen to him all day explaining fascinating science and technology.

    Reply
  • David Myers Phd Bsc ImechE.

    You can but you can not use jet engines.

    Reply
  • viralshield

    If you wish to attract real science and engineering then just use km/h, meters … and so on. Otherwise your videos will not be valuable enough to watch.

    Reply
  • Larz

    Help me understand escape velocity. Why can’t you be traveling at 25,000 mph under power and leave earth’s atmosphere? Or does escape velocity mean that is the velocity you need when not under power?

    Reply
  • Charles Wagner

    I find it fascinating that Mach 33 is required to escape Earths orbit.

    Reply
  • tinwoods

    If you didn't know this before watching the video you seriously need to review your grammar school science textbook.

    Reply
  • edidiong ekpo

    Interesting!

    Reply
  • kkk

    Is this guy Varys?

    Reply
  • Eric Schweitzer

    Because the planes would eventually run into the dome and crash!

    Reply
  • Alessandro Gi

    Nicely explained video, however there is one small mistake. Around 3:50 you mention the escape velocity needed to reach orbit. This is incorrect, the Earth escape velocity that you mention of 420720 km/h (or better said, 11.2 km/s as is more commonly used in space flight) is the velocity needed to actually leave Earth, such as a mission to Mars. In order to be injected to orbit around Earth, the radial velocity (velocity in the line that connects Earth to the rocket) needs to be brought back to roughly 0 km/s, while the transverse velocity needs to be about 7.8 km/s, depending on altitude, which has nothing to do with escape velocity. Other than this, nice video!

    Reply
  • Frank Simmons

    Sir I don't get it, escape velocity is 40,270Km/h.
    So when I jump off the ground and reach terminal velocity are you saying that's close to 40,270Km/h??
    If I could maintain that rate of ascension I would leave Earth, if it wasn't for damn gravity of course.
    Yeah?

    Reply
  • jorgelawes

    I thought the answer was pretty obvious, but definitely glad I watched anyway. Awesome video!

    Reply
  • Michael Jordan

    Cos you'll crash into the dome that encloses the Earth plane.

    Reply
  • I C Flat Ndatsdat!

    How does thrust happen in space?

    Reply
  • KlapAl0ng

    put a plane on a rocket
    problem solved

    Reply
  • Chris Taylor

    Question, can a boeing 767 passenger airplane travel at speeds of up to 586mph at sea level?

    Reply
  • Dan Anderson

    Great piece!

    Reply
  • Trebor Ortsac

    Nice interresting to watch

    Reply
  • Peter Cooney

    Because aliens will shoot their laser cannons at them… duhh

    Reply

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