The Insane Engineering of the X-15

2,2 mln. weergaven277

    Get a year of both Nebula and Curiosity Stream for just 14.79 here: and using the code, "realengineering"
    Watch this video on Nebula:
    Vlog channel:
    Get your Real Engineering shirts at:
    Thank you to Charlie Garcia for his invaluable advice and expertise during the scripting process of this video:
    3D Model provided by Clément Moreau:
    Writer/Narrator: Brian McManus
    Editor: Dylan Hennessy
    Animator: Mike Ridolfi (
    Sound: Graham Haerther (
    Thumbnail: Simon Buckmaster forgottentowel
    Fact Checker: Charlie Garcia
    The research for this video took about 4 weeks with the help of the reports, books, research papers, and nasa communications below. Charlie Garcia also kindly lent his expertise in rocket propulsion as a fact checker and advisor for the project. We normally show numbers on screen, but numbers got mixed up during the convoluted writing process and it’s now 12 pm the night before upload and I just can’t bring myself to link them all appropriately, but rest assured that all information in the video comes from one of the fantastic resources linked below.
    [8] Page 247
    [15] Page 23
    [16] Page 440
    [17] Page 16
    [18] page 74
    [21] Haynes 117
    [22] Page 440
    [23] Page 444

    Thank you to AP Archive for access to their archival footage.
    Music by Epidemic Sound:
    Thank you to my patreon supporters: Adam Flohr, Henning Basma, Hank Green, William Leu, Tristan Edwards, Ian Dundore, John & Becki Johnston. Nevin Spoljaric, Jason Clark, Thomas Barth, Johnny MacDonald, Stephen Foland, Alfred Holzheu, Abdulrahman Abdulaziz Binghaith, Brent Higgins, Dexter Appleberry, Alex Pavek, Marko Hirsch, Mikkel Johansen, Hibiyi Mori. Viktor Józsa, Ron Hochsprung

    Gepubliceerd op Maand geleden


    1. Real Engineering

      This is the link to the Armstrong documentary. Well worth the 90 minutes to watch. If you don't have an account you can sign up with the link the description.

      1. brentsrx7

        The animation, pacing, content and info-graphics are just perfect. You don't excessively dwell on any one aspect or skip over arching engineering breakthroughs achieved by the program. You present this subject matter in such a clear and succinct way. Thank you!

      2. Brian Bonnell

        @SovietSheep jjjhhyy

      3. Total drama Ella .

        Peoples who have coronavirus vaccine will be death in one to two years from having vaccine . do not believe me wait still 2022/23 and see how much peoples died over time in to 2023 ,news tell more lie then trust believe me or not wake up slaves.

      4. Lord Samich

        @Rocketplumber "NM propellant isn't just a monopropellant, it is a detonable high explosive." Pfft... Wheres your sense of adventure? :) I'm sure there must be a stabilizing agent that doesn't dilute the NM? I should probably clarify that when i mean mono-propellant, I'm speaking only in terms of the need for separate storage. .

      5. Divergent Droid

        THIS is a Freaking JOKE! IF the plane DID go that Fast.. Calculate how much drop the pilot would have to to do Every Second to maintain altitude with a Sphere 24901 miles in circumference. The Results may surprise you. It's Impossible. Earth Cannot be a Sphere at the size claimed! -- Prove Me Wrong - YOU Cannot!

    2. Justin B

      Imagine the balls it takes to jump in a rocket and see how fast you can go

    3. Sr-71 Blackbird

      I raised that boy


      nah the camraman is faster

    5. Cool Legend

      those renders are just incredible

    6. W W

      It's technically a manned rocket, not sure being called a plane is exactly correct

    7. achelp95

      10:23 - Bookmark

    8. Paolo Viti

      I'm very sorry that I saw only now the great video on "my" favorite X-15 as it truly deserves the title of the fastest plane ever made! Among many challenges the engineers had to contend with perhaps the greatest was the heat that almost melted on one flight and the quartz glass that shattered on the other flight. Those pilots were really great pilots doing their job and the magnificent people behind the created the X-15! Really enjoyed this video and thanks for sharing this 👍👍👍🇺🇸🇺🇸

    9. Elmer King

      Awesome ideo but i did not understand a damn thing

    10. Mick Mars

      And then white people decided to babysit third-world-countries instead of commiting to progress

    11. Tech To know

      Hope in india it would posssible

    12. Benjamin Konikoff

      Who gave American aircraft designers cocaine and enough rocket fuel to put man in Proxima Centauri

    13. ShotsFired andMissed

      Welcome to the Intro on Rocket Science The intro:

    14. Name's OMEGA

      This thing is more like flying a missile than a jet at that point

    15. HotelxEcho

      Can you make a video about the SBD Dauntless?

    16. TomasVolley

      The background music in the intro is captivating and resembles with Hans Zimmer-like style. Though I can not put my finger on which song it is, I almost have it. Perhaps it is from the Cloud Atlas movie with the Sextet?

    17. Zak Irwin

      The Lockheed Martin SR-72: *6Mach*

    18. Eoghan Dridl

      Nearly 6 tonnes of fuel per minute wtf

    19. James Dinius

      When it comes to the nose both arguments are right. A blunt nose will give you a bow shock and reduce heat but you're gonna pay for it with higher drag. The Apollo re-entry capsules exploited this since reduced heat and speed were both desired.

    20. Rafeeky

      It is hard not to get emotional during some of these videos. Humanity is so incredible! Thanks for making these videos

    21. ser man

      X-15: See u later BlackBird! 20 seconds later x-15: Can I get a ride back home?

    22. NeoduinoVlogs

      Literally rocket science

    23. jeon sassy

      What am I doing here??? I don't understand a thing haha

    24. bonob0123

      did not know x15 was secretly, closetedly, a fabulous shade of pink

    25. Skipper

      Not the fastest plane ever built First: Rocket Engine Second: Doesn't even take off on it's own. Third: Black Bird.

    26. WhippySpoosledorf

      The fastest manned flight was the x-43. Mach 9

    27. Rudolf Wickond

      Great high quality video. One of the few documentaries that does not treat the viewers as non-technical idiots.

    28. whirlybird n

      So are the "Boundary Layer" and the "Blunt Nose" off? To me this was/is a crucial part to the demonstration part of the video. :/

    29. Joe E

      These designers and researchers did collect good data for the Space Shuttle units ... they just couldn't develop a good O-ring or heat tile ... hence 2 out of 3 Shuttles went 'away'.

    30. Amay Kataria

      Isn't the x43a faster?🤔


      RIP Michael Collins

    32. incargeek

      The shuttle was the fastest ever crewed plane.

    33. Beach Boy

      Super 👌 graphics and super video 📹 👌

    34. Beach Boy

      Wow 👏, hard to believe that 70 years ago, hyper planes were engineered Amazing

    35. IVLxJAK2

      Makes you realise just how little you know about the world. Such a shame that there's simply not enough time to learn everything there is to learn in one's lifetime

    36. Elias Kjærbo

      Nasa’s X43A could be next

    37. Darren Smith

      At one time, the US used love to move forward and perform miracles. In the last 40 years it has become, "Anything will do if nobody actually finds out what the odds are."

    38. Borlla Gras

      automate crypto platform is doing a wonderful Job. Payment comes on time as expected. Congratulations!! To me and my family.

      1. Jimbowo

        Just like Bit Connect

    39. Nikolas Grace

      My interpretation of areospace engineering: *AAAAAAAAÀAAAAAAAAAAAAAAAAAAAAAA* hah?!

    40. Ace Hoffman

      This is the future of energy production. It's happening now and it's great!

    41. Garneredify

      We had to start somewhere I guess. Even today, watching rockets take off seem a bit archaic. Someday they'll get past these used up methods.. hurry up Elon.

    42. Seth Huff

      bruh shut up its a rocket

      1. Jimbowo

        you will never achieve rocket

    43. dPaul Williams

      I remember when the X - 15 launched in 1967 and I was hooked and read everything about it.

    44. Captain Kell Walker

      Helium is a lower weight that is lower weight Hydiian

    45. jdsb-3

      We can rebuild him. Make him better, faster, stronger.

    46. MetallicaLife4

      Imagine you're thundering along at Mach 5+ and your window goes *BANG*

    47. Samuel Reynolds

      nitpicking here but 8:48 integral of thrust dt gives total momentum transfer not total energy (that would be integral of thrust dx). Amazing video!!

    48. VioletGiraffe

      I was studying the plot at 22:45 with curiosity, until I realized the X axis is in Fahrenheits and I don't have a clue what the numbers mean. I would expect an engineering channel to use actual international engineering units :)

      1. Jimbowo

        This was an american made plane 70 years ago and this is a youtube channel based for entertainment, both of those might change it to Fahrenheit.

    49. hadhad69

      Truly brilliant video! The detailed knowledge and graphics are top notch 👍

    50. Stanley Chounard

      It was a rocket. Not a plane

      1. Jimbowo

        Cry more

    51. kinte1870

      This was a rocket with wings and a flaps and pilot with adamantium balls.

    52. Charles Koushik

      Nasa should built a succesor

    53. bieltanman

      brah its a rocket

    54. Ayush Jaiswal

      Just the first 2 min watched And I got chills

    55. Noah Mcabee

      If you believe the fastest plane ever came from the 50s you're the conspiracy theorist

    56. Aaab bbba

      LovePeoplesVoicesHolyWorldReadPsalm120_134Life15YearsAhazSunDailSolarSystemWeapon2Kings20_9ApexTecBiologicalSpiritaulEngineeringLostDayCalendarsMoreDieByeHailStoneThenAnyFightOfManJOSHUA10:11_14Amos3:7SecretsConvertOrExaptooOpenBibleReadAsUspeakAngelStoodInTheMistOfUsEspoAllDimensions24:36LUKE24:31_32VanishedDidItBurnAsOpenTheScripturesExpatooLiesWhoresLiveItUp17:REV10:7_11EventsMercuryRetrograde3FullMoon30daysEvery50DayCrosticsSpringEquiox20th15DayCountChirstBecameArePassover5:7!1COR13:CharityApirl1FoolsHaveHoliday!Stephen7:ACTS2:Petecost50dayAfterChirstDefeatedDeath7:HEB2:14SummerSolsticeJune21TemporalPsychosis20thRelativityVisionsPerfectDayNoPremeditatedAnything!SayInFlesh5%Put2Words95%Trust2:4!1THES5:3SignOfTimesDiscernWorldsincreasinglySpiritualLaborPainsNoEscapeBellysTrvailingLimitsTimePlanetsEclipsingSolarSystemWorldWideEffectsEveryTimeForfulled!Notes2SisterCalledU66:4!ISA43:26ReadBibleStuffSpecialBiblesTechnologiesWerewolvesVampireVehicleUFO!TimeTravelAllThe9:AMOS3:7SecretsUntoServantTheProphets!Challenges18:!2KING2:7_8ComeBackRead!Elijah!Elisha!SmoteThe(Water)!TimeTravelGetThisDoneReadEZEKIELchapter1WholeThingGetInRiver(Water)River(Chebar)meansHebrew(LENGTHofTIME)ExplainNowMonthLaterWatchEveryBodyNextToYouForFullMoonsOkBeSafeLoveYouWellWorkOnSomeOfThing Entertaining Angels 13:4 Hebrew 12:29 Elohim God Consuming Fire Had No Power 3:27 Daniel 4:33 Babelon Kings Lycanthropy Werewolves genetenic WeaponsFu BillgatesFU All Possible 9:23 Mark 10:27 with God all Possible Spirit Intercession 8:26 Roman 13:1 higher powers ordain of God so Advanced today can explain hybrids Ribs Helix Curve 2:21 Genesis 3:3 Exapatoo Beguiling Touch Sex Satan Screech owl Vampire Lilith 34::14 Isaiah 3:4 Minds Of Children Baby's will lead them worlds Perversions transformed works 12:2 Romans 12:20 Heap coals Fire Foreheads they Think Globel Warming Speaking Consciene Seared Hot Iron 4:2 1Timothy 2 2: 1-15 Soldiers devouring flaming Fire Round About 2:3 Lamentations War 144 Psalms 68:17 Gods 20000 Vehicles 1000 Angel Stab anyone any where any place any time 4:12Hebrews 10:7 Volume of God Scorpion Sting Enemy Break Back Bones world wide Ezekiel 9:1In Hand Destroying Weapon Elohim Jedi Tav Zeal Seal of God In Forehead 9:3-4 Revelation 9:11 Angel of Death Isaiah54:16:17 Blood On the Wall No defences millions reading world wide Enemy Is Dead are u underwater too 26 :8Leviticus26:36 Sound of shaken Leaf Will Chase you Angel follow to your death 4000 curses plauges Will Fall Isaiah 43:26 Justified ur dead this killed billions Go head Say anything Double Destruction 17:18 Jeremiah 20:12 Read The Minds Vengeance Cut Down Enemy 37 Psalm 120-134 everyday My God Never Sleeps Psalms 121 ur Only hope is too Study i Dont care or want to hear you speak Think Or Talk ? Only read The letter your father wrote you 1john 4:18 Perfect love case out fear good luck Daniel 3:29 Mark9:23 :14JOHN20:2 ShepherdChapelUTubeEvacStayDontBurnHousesLeaveNWOWill!BeSafeAllCoronaHivCantEnterWomb89SarahBabytime21:7GEN49:TribesJacobConsimateMarriage16:8EZE38:22AsteroidsRacesKillUrRapistWorldWideFuturePastGEN19:24BrimstoneFireRainOutOFHeavenVoid4:22_28JER51:25_29DestroyingMountainVolcanoes100mgZinc Stop Covid is HIV from Entering the womb take Everyday Example friend pregnant got Poison ivy baby 30 year now immune to poison ivy world wide all women need to be with child read everyday 15 years to have kids Love Gods Promises Read study's My theme Song My Way !!!!!!!!!!!

      1. Jimbowo

        if christianity is wrong you're gonna look real stupid in the void

    57. Jon Merson

      True Trotle...

    58. Nic Stroud

      We say 'many', you say 'manny.' We say any, you say 'Annie.' You call the shows on Curiosity Stream (and Nebula) 'docker-men-trees', all acceptable and frankly I don't think we should criticise each others accent but please never say 'haitch' again. Makes me cringe ordinarily but doubly so when educated people say it. Fascinating video, as usual, by the way.

    59. Doug Tilaran

      Flintstones shit. Pass me a tic tac

    60. Mister Win

      Did He just Say "kiloNewtons" ??? I'm Astronomically Astounded

    61. Alexis Lloyd D. Alinan

      Put those engines on a jet fighter

    62. Bobby Cox

      More information that I didn’t know I wanted to know. Your channel is exceptionally interesting. Thank you

    63. rationalguy

      Another amazing thing about the X-15.. I'm now 70, and this flew when I was in second grade. We read about it in our "Weekly Reader," a little newspaper for school. Making and flying this 60+ years ago was quite an accomplishment.

    64. bradster2214

      this is infuriating. it's mach 3.3 not 3.3 mach

    65. Damon 1776

      “It provided treew trootle” 😂😂

    66. Batman

      I never learned this much of chemistry in my whole High school period.

    67. Justin Shim

      Is this thing a scramjet? Or did those not exist at the time?

    68. stephenspencer2121

      Yeager should have been in the Gemini space program. But as the right stuff has him saying at fist thought, spam in a can. Lols

    69. aguinaldo

      Is it the hate, love or maybe both makes us as human being~built incredible such a thing from dust. Nice engineering's video by the way!

      1. Jimbowo

        It was the cold war and the vietnam war

    70. Pablo Picasso

      Livro , o primeiro homem Neil Armstrong .

    71. One-Christian Warrior

      WANT TO LEARN OF TRUTH. Free energy is in our Bibles and is so super simple that it should be positive proof of an extremely powerful SPIRITUAL WARFARE that is going on behind the scenes, in order to cover up the simplicity of this technology. This free energy technology is so old that it can be found in Ezekiel 1:16, where it is attempting to describe the workings of a UFO motor = ”a wheel in the middle of a wheel”. I used pulleys to imitate this technology, where you only input a few sparks of current for 1 rotation of a motor with a large 33 cm circumference, (about 10 cm diameter) pulley attached. This would freely gain you 99 cycles of AC or DC electricity, from 3 mini-pulleys of 1 cm circumference-(about 0.33 cm diameter) with AC or DC motors/generators attached, by simply running the same belt-strap or even a tied piece of rope or string in a pinch, past these 3 mini-pulleys - + Don't believe in the torque lie, as the only power that these three mini-pullies need to produce is a lot of voltage, (easy to do) + a few sparks of current, to crank over this 33 cm pulley once. That's right, this one large pulley + three mini-pulleys are forming a self-powering set of DC generators. The many rotations of the mini=pulleys build up the massive voltage needed to crank over the large 33 cm pulley once. Then you use the large amount of belt that you gain from the single rotation of the large pulley to rotate the 3 mini-pulleys in massive amounts of times - Want to know more about something that really matters, like the Truth about the true powers of this world, reality + what our lives are truly all about. Trump believes in our Father in Heaven, and by the way, the ARK of the COVENANT has been found in Jeremiah's Grotto, right under where YESHUA=Jesus was crucified. So HIS BLOOD + WATER that came out when He was stabbed by the spear could run down the crack in the bedrock, that happened when the earth quaked + landed on the correct side of the ARK, that was placed there many hundreds of years earlier. His dried BLOOD was still alive even, + tested as only having 24 CHROMOSOMES = Virgin Born + proving HIS DIVINITY.. (only had one parent regular =46, which is 23 chromosomes each) + Him with 23 from His mother and only one male Y chromosome from His Father in Heaven. - PLEASE WATCH THIS VIDEO @ (41:41) = HIS Blood is STILL ALIVE + had only 24 chromosomes = 23 from his mother + only One from His Father (normal people have 46 = 23 from the mother + 23 from the father). If these videos have been taken down, then in NLname search these words = ( ark of covenant blood Ron Wyatt ) - Sorry guys + gals, but the higher up elite of mankind has decided to believe + side with these aliens (fallen angels + Nephilim) = sons+daughters of the children of fallen angels + human females in building these particle colliders + quantum computers - which mess with our timelines + allow evil spirits into our reality. - I cannot be sure if Trump was-is+will-be the best American President,,, but did you notice that the fake news of the very corrupt media does not mention all of the great things Trump did?. Democrats not only want to kill your unborn offspring, but they want to kill them after birth even. DON'T BELIEVE ME,,,., then Google Democrat + abortion, then you can see for yourself. + BY THE WAY - ISN'T THE FACT THAT THE ARK OF THE COVENANT HAS BEEN FOUND in 81 + WITH CHRIST'S BLOOD ON IT + STILL ALIVE = (PROVING HE IS DEVINE), HAVING ONLY 24 CHROMOSOMES = PROOF OF VIRGIN BORN =(the biggest NEWS ever, and proof of the corrupt + fake NEWS)= why is this not covered on every TV station + + + + + + + + + + + - Isn't it amazing what knowledge we can gain by simply adding the “il-s” of life, into this evil theory.,, EVil-sOLUTION. Evolution never happened,,, and it never had the time, so it could have happened,,,, because we have only been here on this earth for about 6000 years. Think about the odds of us on this earth that is constantly gaining mass from space dust and meteors, revolving around a sun that is always losing mass from burning fuel=mass. If mankind has evolved over billions of years, then why is there only about 6000 years worth of His-story and so little space dust on the moon = see the moon landings, there are only a few cms of space dust. If evolution ever happened, then it needed the moon to keep the oceans from becoming stagnant water. - WHERE ARE THE THE BILLIONS OF YEARS WORTH OF DUST DEPOSIT. Surely that would have produce meters of dust, as would not the dust have been even thicker way back then + Don't try to tell me that something or someone removed the dust every so many thousand years. - DO THE MATH FOR YOURSELF = the amount of dust deposit is known,,, + the amount deposited every year is known too. I did the math in the early '90s, and it worked out to be about 6000 years worth of dust that is on the moon now. I don't know if they use the same figures now or not. But even so, it should be obvious that after even one billion years,,,, the dust should be many meters thick. - TRUTH about COVID-19 = + - This is so simple that it should be proof positive of the Battle between GOOD + EVIL. Proof of a most powerful war going on in the background, with REAL BAD FORCES that are controlling our lives. Please remember that Satan is called the ”god of this world” in our Scriptures = (2 Corinthians 4:4). You only need to input a few sparks of current, that rotates a large 33 cm circumference pulley once, to multiply you an output of 99 cycles of AC or DC electricity from 3 mini-pulleys. Do you see how super simple this is, and how powerful the evil forces are to keep this super simple technology from us for so long? - FREE ENERGY = SIMPLICITY AT THE BEST (AC Electricity Multiplication using simply the geometry of pulleys to multiply AC rotations) (a DC motor only takes a few sparks of current, to rotate one full time) Please don't be fooled by the old false torque problem lie, because this torque only occurs when you are producing power. And no matter how much voltage you need, when you multiply it by the few sparks of current that you need, (practically nothing) it equals only the smallest amount of power, (requiring very little torque). - (EZE 1:16) “The appearance of the wheels and their work was like,,,,,, and their work was as it were a wheel in the middle of a wheel.” - As in, a little wheel inside a big wheel, but I could not afford to buy a big wheel with threading on the inside, and a mini wheel with the same threading on its outside. So I did the next best thing, I connected a big wheel to a mini wheel through a belt, strap, rope, or even a piece of string in a pinch to connect the two pulleys with motors attached. - Have you ever heard of the MANDELA Effect? PLEASE CHECK THIS OUT,,,, + then try telling me that there is not a POWERFUL SPIRITUAL WARFARE going on in our world. This is a must-watch video. All of time and space are changing. Things that are true have been altered + CERN is the cause for these events. - Here is one of the videos trying to let this scary information out - + here is an explanation by the Physicists - CERN Is Changing Our Timelines - Proof - Mandela Effect Part 1 + this is a video of what they are really up to - Here is a website that shows you how quick + simple this GEM technology is to build = - - TRUTH ABOUT CERN D-WAVE COMPUTER ILLUMINATI PLAN FOR HUMANITY

      1. Jimbowo

        You should find something better to do

    72. Zandanga

      My brother and I immediately remembered Fireball XL-5 and that deep-voiced announcer from when we were kids ...

    73. Frank Smith

      This is a great history lesson. But it is wrong the information is not correct. The M15 is not the worlds fastest craft. In 1977 we proved it. Project hanna. Code name the aura ". Worlds first plasma craft. Faster than the HUMEN body can with stand in any suit of that day. No fuel, no exhaust , no real sound but the pop when the sonic boom hit. The most complex part I had to over come in the design. Was keep the pilots alive. My Aurora" has a liquid filled cock pit. My pilots wear a dive like suit. Think of a fish tank. 2 pilots. So fast that in 1977 we didn't have the means to calculate the distance. Reason. The craft is gone so fast, you can never see it. You'll see clouds move like something sliced thru them. Puffs of curles clouds. But she's faster than our understanding of time and space. Out biggest fear was if the pilots shot off and couldn't make the turns we'd lose them to space. NO country has come even close to her 1977 we set the bar so high. The cock pit liquid protects pilots from subatomic particles and there no outside heat. even in reentry. The world would have seen her in 1977. We were heading to a DEFENCE airshow. And the Airforce showed up with trucks filled with heavily armed men. Shut us down. Took everything to go hide it at area 51. The public will never see our work. They stole it. No tax dollars were used. A hand full of us were forced to go work at area 51. Pretty much slaves no PAY. Taken from our house at night by the airforce. 1977. The airforce controls 100% of what it let's the public see or know.

      1. Jimbowo

        Do you have a single source?

    74. the boi

      I feel bad for watching this for free... Never stop making these!

    75. Warner Robins

      And if the pilot got a paper cut he or she would have hydrogen peroxide to treat it.

    76. Fernando Sosa

      Did they ever try a ls swap ?

    77. TEC Youtube

      So then the pilots of the X 15 were the real first humans in space.... Sorry USSR you lose again...

    78. James Williams

      6.7 mach is almost 8000kmh

    79. flightJazzCinema

      ( I guess I missed something, at 10min30 I would expect the specific impulse values to be expressed in units N x s / kg or dimensionally equivalent units, Force intensity x time interval / mass. )

    80. Archie Mercer

      @3:55 "tru trattle"

    81. Andy Seredy

      Millennium falcon ftw. (nice touch)

    82. I love The rain

      Sounds like the guy from “that chapter”

    83. Teejay Cerrero


    84. Rick Flores

      My major professor at Stanford was directly involved. Is stories about the interactions between NASA and the contractors are too hilarious! It was a glorious time to be an engineer when science ruled over politics and greed. I'm sorry to say that this is no longer the case. It is rare to find a research project that is not totally driven by politics and greed which is to say that it is not concerned with achieving anything at all. Often teach types of projects flat out lie to the public. The lies surrounding the various types of crises are a great example. To meet the needs of some of my early research projects, we studied the variation of the climate. Of course we knew to basic concepts... Number one was that we are coming out of an ice age and that as 1 would expect the temperature was slowly increasing. The 2nd fact that everyone must understand is it the only thing constant about the climate is the fact that is constantly changing. To classify this normal change as a crisis is absurd. To blame it on man is just plain stupid. Sadly many of the scientist that I had formerly worked with gavyn to the vast amounts of money that were available for this ridiculous endeavour and shows to be complicit in the greatest charade in history.

    85. Rick Flores

      Finally a source of factual information that scientifically accurate. I love the plots and detailed engineering data. As retired research engineer Paul is involved in many of the activities that are discussed. This is the 1st channel to get it right. Congratulations and I wish you success!

    86. Casey Merritt

      As a current NASA AFRC intern working on developing a VR flight sim of the x-15, its awesome to see this video become so popular, the engineering behind this definitely needs some more recognition.

      1. ESPOFF

        Now that sounds like a cool internship

    87. D H

      Use Fahrenheit measurements in your data.

    88. Stephen Crouse

      I'm sure you've received many thank yous for this video. As an engineer that had an X-15 three wheeler as a boy, you did an outstanding job presenting an understandable detailing of this amazing 60's development of our United States spacecraft endeavors.

    89. Ultra-Violet-Light Crayon

      At what altitude did the X-15 travel mach 7.4?

    90. Mic Smith

      "Wit out true trottle"

    91. William Kelly

      There is a small museum in Denville, New Jersey that contains a lot of information on the Reaction Motors team that developed the XLR-99 engine at the Picatinny Arsenal test facility.

    92. Alan Lewis

      At 17:31 - XB-70 Valkyrie. Another truly awesome - and insane - engineering project. And one of the most beautiful aircraft in the world (neck and neck with SR-71 and the Supermarine Spitfire)

    93. Naveen DA

      Awesome animation, especially X-15 overtaking the SR71

    94. Renato Medeiros

      here we have a compilation of disciplines that were applied to a task that ordinary people would never have access to at that time. it is as if today someone were in the bowels of Lockheed's research center and exposing all their next technological innovations of the future.

    95. Clifton Tibbits

      Great info,well done and thank you for sharing.

    96. Christ is coming

      Although UFO isn't a plane it will always be fastest flying object

    97. Cam Dix

      I can remember, at around age 8, my dad reading to me a 1964 Time-Life book on FLIGHT and showing me photos of the "latest" in aviation: the SR-71, XB-70 and the great X-15. That was when I learned the word "hypersonic" - a word that all my life has put goosebumps on my back. Thank you for giving us such a beautiful documentary about such an astounding feat of engineering and a story of such bravery among the pilots that flew her. What a beauty of an aircraft.

    98. Liquid

      Imagine being the guy presenting the idea of this for the first time "Okay listen hear me out...we attach a big ass rocket to a big plane...but we put a seat at the front! I swear it would totally work!"

      1. Matt Yabs

        It plays into human logic. At a certain point everyone who knows what they are talking about would say "it won't work", 50 levels of stupid above that and everyone goes "fuck it, let's have a go".


      Excellent images of the blades. Great post.

    100. Mursid W. Hananto

      Great documentary, so awesome that I watched this repeatedly. Thanks