U.S. "Super Prop" Fighters P-51H, XP-72, and more

Mobil & Otomotif

This video talks about the later war "Super Prop" fighters that the USAAF was considering near the end of WW2. Some were built, some were not. We also end up in a Sicilian elevator.
I did not cover the USN or British super props, although one makes an appearance.
My video on aircraft Supercharing and Turbocharging: idmilk.info/cycle/video/in19qKvVk7ewits.html
Adam's video on props vs. jets: idmilk.info/cycle/video/bJppjM2-zbB6q7E.html
Please support the channel:
teespring.com/stores/gregs-store-29?page=1 (mugs, posters, and more)
Paypal: mistydawne2010@yahoo.com
A lot of people are asking about the destruction of Republic's records. I talk about it more in this video just after the 21 min. mark. idmilk.info/cycle/video/lnR9lpKdmtdsb88.html At that time, in 1987 Fairchild wasn't sure what Republic records were still classified and what were not. The Republic F105 had only retired from service three years earlier, and Republic built equipment that was classified. Rather than figure out what was classified and what was safe to release to the public, they just destroyed it all.


  • eyalcr500
    eyalcr5008 jam yang lalu

    it ain't a liquid cooled radial - it's a seven bank inline engine of 6 cylinders each, coupled together like they used to do X engines ,or w engines....

  • FiveCentsPlease


    6 jam yang lalu

    + eyalcr500 The Wright R-2160 Tornado engine was a seven-bank, 42 cylinder liquid-cooled radial.

  • Mark Rowland
    Mark RowlandHari Yang lalu

    Forget the yanks. The big Bristol Sleve-valve liquid cooled, radial put out 4,000hp on 200octane fuel in 1946.

  • FiveCentsPlease


    13 jam yang lalu

    + Mark Rowland I think you are talking about the Napier Sabre H-24 engine.

  • Dennis Mason
    Dennis Mason4 hari yang lalu

    So: propeller airplanes can go maybe 555 m.p.h. and then there is a borderline where they just don't go faster? E.T.s would straight up give us the clean-burning fuel if we could just keep the dark-ops out of the equation. I want to live in a world without jets, just propeller airplanes because I used to watch and listen to Constellations taking off and landing at LAX and that is beautiful music. That propeller-driven world goes well with clean-burning fuel WHICH by the way was invented a long time ago. How could you know, why should you care? I just lost interest in aviation process after 1946.

  • Dennis Mason
    Dennis Mason4 hari yang lalu

    By Jimmy Durante profile I was referring to the pointy-nose XP-47H, film below.

  • Dennis Mason
    Dennis Mason4 hari yang lalu

    Chrise! What hath Chrysler done done? Hemis were all over the sixties. This is historical and it took me a while to get over the Jimmy Durante profile and when I saw the hemi-plane in flight I was hooked. I did not want my Jug mutilated. It's a whole new aeroplane. Chrysler should be proud and where the heck was Chrysler in 1941? Building Jeeps? Tanks? My guess is tank engines.

  • Dennis Mason
    Dennis Mason4 hari yang lalu

    Here is a gorgeous film of the XP-47H - idmilk.info/cycle/video/qWmhjNWb1bN5pLU.html - not a counter-rotating thing and the speed is still classified.

  • Bob Greene
    Bob Greene4 hari yang lalu

    What caused the loss of the Republic Aviation Corporation records?

  • Bob Greene

    Bob Greene

    3 hari yang lalu

    @Greg's Airplanes and Automobiles Thanks-- I customarily start watching your videos without pausing for the summary or links, especially since you take special care in the video to address details. That is normally the case, but with this video, the text description had the answer I needed. Were it still possible to recover the records, administrative disposal of Republic records might have been challenged, since the technology developed was done in part with taxpayer assistance and was a national strategic asset. And as you point out in other videos, there is abundant sharing of technical approaches and innovations-- officially or unofficially.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    4 hari yang lalu

    That's in the description.

  • Overcast Friday
    Overcast Friday4 hari yang lalu

    You're right -- Thunderbolt or jug would have made much more sense than Hellcat. However, I've noticed in large companies, the easy jobs (eg. naming car models) are often taken by the laziest people. The Fairchild A-10 is essentially a single seat North American PBJ-1H. Side by side on the ramp, they are virtually the same size. Too bad they didn't use Fairchild PBJ-II, saving "Thunderbolt II" for some other plane.

  • Sergio Rodriguez
    Sergio Rodriguez4 hari yang lalu

    Nice video, interesting information!

  • Dennis Mason
    Dennis Mason6 hari yang lalu

    This video is historical. Greg corrects the most popular grammatical error on planet earth. There's >singular, There're > plural, multiple.

  • Charles Weldon

    Charles Weldon

    5 hari yang lalu

    1p a5

  • Francesco Nardone
    Francesco Nardone6 hari yang lalu

    I tought you were going to show a paternoster elevator (idmilk.info/cycle/video/gKB0hpja05atgKk.html)!

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    6 hari yang lalu

    If I get a chance to ride in one, I'll show it.

  • Iconoclast Pleonast
    Iconoclast Pleonast6 hari yang lalu

    This is one of my favorite topics--the last grasp for glory of the piston/propellor aircraft. If only... You realize WWII would have degenerated into a boring faceoff between jets had it lasted much longer (ignoring the contribution of the Bomb). Just look at Korea a few years later... probably driven more by combat testing and funding new weapons development than preserving democracy.

  • Douglas Pera
    Douglas Pera7 hari yang lalu

    Ford raced a car as a thunderbolt

  • Douglas Pera

    Douglas Pera

    7 hari yang lalu

    @Greg's Airplanes and Automobileshi i barley remember reading about that when i was a kid but o dont rember anything about it ill look it up thanks

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    7 hari yang lalu

    Chrysler had a car called the Thunderbolt before Ford.

  • Stephen Anderle
    Stephen Anderle8 hari yang lalu

    Excellent video! And I agree with you on the elevator.

  • The Budgie Admiral
    The Budgie Admiral8 hari yang lalu

    On the cooling fan debate: Other nations also did this, such as the Japanese, who had a similar system on a number of planes, such as the J2M series equipped with the Mitsubishi Kasei engine.

  • Rawhide Lamp
    Rawhide Lamp9 hari yang lalu

    1000th comment! I love the super-props, i wonder how they would've developed had jet tech come a few years later

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    9 hari yang lalu

    That's fun to think about!

  • hangonsnoop
    hangonsnoop10 hari yang lalu

    The deliberate destruction of Republic's records was an awful decision and very disrespectful of the hard work of their employees.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    9 hari yang lalu

    I agree, it was a huge loss.

  • Fred Kruse
    Fred Kruse10 hari yang lalu

    Note the Boeing B15 hanging on the wall to the right. 2:45

  • Jeffrey Fisher
    Jeffrey Fisher11 hari yang lalu

    I've wondered - why not add a small auxiliary engine to drive the supercharger so the main engine can use all its power for propulsion?

  • Casey Zuelke

    Casey Zuelke

    6 hari yang lalu

    Weight,, and synchronicity would be a negative full circle.

  • FiveCentsPlease


    10 hari yang lalu

    + Jeffrey Fisher You can sorta get that with a turbosupercharger setup. But it's about complexity and weight. Read the experiences of the mechanics who worked on those magnificent Wright 3350-TC Turbo-Compound engines.

  • Dan L
    Dan L11 hari yang lalu

    I enjoy your videos and commentary. I would like to add a comment about the thermodynamic advantages of the jet engine. The piston engines (largely Otto cycle) max out at between 15-25% efficiency of fuel energy to power. The Brayton cycle, which is involved in modern commercial jetliners, is roughly 70% efficient by the same metric. It was probably much lower in the early days, but no one can cheat thermodynamics, we can just see how far we can.

  • Mark Catton
    Mark Catton12 hari yang lalu

    An interesting video. One of the other limiting factors to increased engine power is the propeller size. One of the post war Spitfires used for high altitude recon had such a large prop it had to take of and land on all three wheels. Lifting the tail risked grounding the large prop. Also the Avro Shackleton had to use contra rotating props as the under carriage was not long enough to accommodate a single prop on the Griffons.

  • James Rinkevich
    James Rinkevich12 hari yang lalu

    They didn’t have cam less variable valve setups

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    12 hari yang lalu

    Neither do many modern cars, like maybe .001 percent for something.

  • Volks Yes
    Volks Yes13 hari yang lalu

    Looking at the XP47 it is smiling like a crazy madman hahahah

  • James LaRoche
    James LaRoche13 hari yang lalu

    Imagine an Xp-72 In the Battle for Britain! Lool

  • John Dolschenko
    John Dolschenko13 hari yang lalu

    I am saving this video for the arguments with idiots. Tata motors (dodge) does not make a Hemi anymore.

  • Nunya Bidniz
    Nunya Bidniz14 hari yang lalu

    YT has really been p!ssing me off lately w/ the algorithm hiding stuff from my subscribed channels. Yes, I could sign up for alerts, but there's enough unnecessary clutter in my life already. Have you considered x-posting to Rumble so you don't have to fight the censors? Lord knows an engineering & history channel like yours shouldn't have to fight to be heard, but YT is obviously trying to limit your audience since (gasp!) you keep referencing warbirds...

  • Em Wintle
    Em Wintle15 hari yang lalu

    The Ritz in Atlanta has a similar elevator user interface. Most people seem to hate it. It’s unfamiliar and takes away the feeling of direct-control. There’s a layer of abstraction in-between, like a “pointer”‘ in programming. That’s hard on our lizard-brain.

  • Bluthammer
    Bluthammer16 hari yang lalu

    Nice one.

  • Raihan Oinaru
    Raihan Oinaru17 hari yang lalu

    Hey Greg nice video . Can you Made video about tbf Avenger? I always like the way you explain every interesting quirk of aircraft

  • Roy Szweda
    Roy Szweda17 hari yang lalu

    Fascinating talk and your voice is just right, more than can be said of too many on YT.

  • PJ Bassman

    PJ Bassman

    13 hari yang lalu

    Absolutely agree. Great voice with good cadence and pace. Always well researched. I enjoy listening to him for almost all my deeper ww2 aircraft info.

  • D B
    D B17 hari yang lalu

    Is this Greg “Premier 1 Driver”?

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    17 hari yang lalu

    No, absolutely not.

  • RD2564
    RD256417 hari yang lalu

    It's a Schindler ... I'm partial to Kone elevators personally. Little elevator joke for you. I'll show myself out now ...

  • David Sparks
    David Sparks18 hari yang lalu

    I MUST SAY THIS...1942 4 VALVES INJECTION (I KNEW) VCT...4 VALVES...I DID NOT KNOW...MY DAD WAS RIGHT WING COMMANDER OF MAINTENANCE ON B52's...Genius man...even developed a BC (GM 1 BBL) CARBURETOR FOR MILEAGE ON A 55 CHEVY 2 DR WAGON (HE GAVE ME) I GOT 30+MPH with stock BC CARB...3:55 GEARS AND O/D TRANNY...RAM'S were the trick as it is today...torque and low RPM will get far better mileage than a small cc high winding engine...(weight about 3200lbs) LOVE THE INTERESTING SPECS & INFO IN HERE...WW2 AIRCRAFT IS A LIKE OF MINE...RENO...ON BUCKET LIST...TY SIR!!!

  • Brice Fleckenstein
    Brice Fleckenstein18 hari yang lalu

    5:50 Ford used the Thunderbolt name in the 1960s, and probably owns the automobile trademark on it.

  • Brice Fleckenstein

    Brice Fleckenstein

    17 hari yang lalu

    @RD2564 Concept car vs Ford's 1964 Thunderbolt Fairlane being a production (abet SMALL production) car.

  • RD2564


    17 hari yang lalu

    @Brice Fleckenstein I see Chrysler had a Thunderbolt concept car in 1941.

  • Brice Fleckenstein

    Brice Fleckenstein

    18 hari yang lalu

    @Greg's Airplanes and Automobiles What car? I seem to have missed Chrysler using the Thunderbolt name.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    18 hari yang lalu

    Chrysler used it on a car first.

  • Brice Fleckenstein
    Brice Fleckenstein18 hari yang lalu

    That P51H prop looks a LOT like the production prop on the P-47D, the so-called "paddle prop", that finally unleashed the full capability and power of the engine in the 'Jug.

  • Raymond Jones
    Raymond Jones19 hari yang lalu

    I find your videos very interesting..the video about the elevators in Switzerland was very interesting!!!👍😊😎

  • Charles Flint
    Charles Flint20 hari yang lalu

    Why on earth were records destroyed ???. Surely storage space is or was not too expensive!.

  • FiveCentsPlease


    20 hari yang lalu

    @Greg's Airplanes and Automobiles I don't know why the DoD is so funny about the F-105 other than it is an airframe that could carry a nuke or some of it is still classified. To this day no heritage organization has been able to restore an F-105 back to the air. That last time a group was negotiating to obtain one of the last decent F-105 airframes, the DoD swooped in when they got wind of it and cut the main spars with a torch. Your information about Republic not wanting to spend the time to sort their records makes much more sense now.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    20 hari yang lalu

    Please check the description.

  • Gary Church
    Gary Church20 hari yang lalu

    idmilk.info/cycle/video/fp52pc2X1Y6MoZQ.html You might like this Greg.

  • Matthias Lee
    Matthias Lee22 hari yang lalu

    Brooklyn, NY at least one of the Metrotech buildings, has something similar. All elevator banks on each floor, have a touchpad, where you enter the desired floor, and then it tells you which elevator to take, inside elevator, all former controls have been taken out, you are just there for the ride. Think this was upgraded last year, because of COVID.

  • Merlin51h
    Merlin51h24 hari yang lalu

    I recently saw a video with the Republic Rainbow and it used the same engine set up as the XP72. In fact, each engine on the Rainbow was basically a XP72 fuselage.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    24 hari yang lalu

    Yes, I covered the Rainbow in an earlier episode. It was quite a plane.

  • Timothy Boles
    Timothy Boles24 hari yang lalu

    When you talk about propeller limitations I think about the Thunderscreech

  • Pete O
    Pete O25 hari yang lalu

    Apparently there are funky elevators in East Germany. Paternoster i think they are called. Worth checking out. Great video too. Thanks.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    25 hari yang lalu

    Yup, If I get a change to go in one, I'll make a video of it.

  • kain hall
    kain hall25 hari yang lalu

    1:18 thats 40 psi of "boost" . thats honda civic levels of boost.....in 1945/6!!!!

  • Mark Granger
    Mark Granger26 hari yang lalu

    I find it interesting how a propeller interferes with a planes speed. I read somewhere that prop powered plane can't break the speed of sound because the prop gets in the way. A jet is limited to high mach 3 because of the blades from the compressor and fan. In an automobile your cooling fan at 40 mph becomes inefficient. Scram jets seem.to be the next big step in propulsion, you just need to get them up to !each 3 for them to work

  • Jim Barbee
    Jim Barbee28 hari yang lalu

    Greg, I really enjoyed your video. However, you forgot to mention Republic’s XF-84H prop airplane which was a converted F-84 Jet. Republic only built two prototypes in 1955, one of which is now at the USAF museum in Dayton, OH. I have no information about the 2nd prototype aircraft. However, I do remember seeing this model which was on a static display at the Bakersfield Airport in 1985 when I was on TDY in California. The USAF museum received this plane during the 1990’s. The old pamphlet that I seemed to have misplaced somewhere, which was claimed by Republic, that this plane could fly at 670 mph. However, the USAF museum disputes those figures. That testing program with Republic was shut down in 1956. Flight engineers and ground crews were sickened by the noise the supersonic props created which could be heard 20 miles away. I believe another crewman or engineer was also injured by shockwaves the prop-wash caused. No USAF test pilot ever flew these aircraft. Only two civilian test pilots flew these, with one quitting after his second flight in it at Edwards AFB.

  • Andrew Larmour
    Andrew Larmour29 hari yang lalu

    Lifts like you saw in Sicily have been used in Australia (some buildings - such as the Telstra building in Exhibition st, Melbourne has had this style of lift for over 20 years) for some time, not common, but not unusual either.

  • will roland
    will roland29 hari yang lalu

    Blasphemy putting anything but a giant radial engine in the p-47!

  • Bille Beth
    Bille BethBulan Yang lalu

    How about the Dehaviland Hornet, Australian Kangaroo, Martin Baker MB5, Supermarine Spiteful ,late mark Griffon Spitfires and of course Hawker Fury and Sea Fury. British super props!

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    I will make that one.

  • Ryan Bowers
    Ryan BowersBulan Yang lalu

    greg can you do some research on the De Havilland Hornet and make a video on it? i feel like it gets overlooked by the mosquito

  • FiveCentsPlease


    Bulan Yang lalu

    +Ryan Bowers There is a Sea Hornet being rebuilt in New Zealand using substantial remains from a crash in Canada. Though at the moment, I am confused whether this will be a static or flying restoration.

  • 1joshjosh1
    1joshjosh1Bulan Yang lalu

    P51h looks like it has a skinnier nose

  • Adam Conroy
    Adam ConroyBulan Yang lalu

    Hi Greg. You are amazing m8. In regards to the XP 69 did you mean 42 litres or actually 42 cylinders?. B well m8. 2:15 in

  • Adam Conroy

    Adam Conroy

    29 hari yang lalu

    @Greg's Airplanes and Automobiles Thank You Greg. I fell a little moronic in that I know you know so much and to have doubted what you described was dumb of me. I listen to and watch your publications any time and everywhere. Taa Mr Magic Mind Greg.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    Hi Adam, the Wright 2160 is a 42 cylinder liquid cooled radial with 2160 cubic inches.

  • Atillla the Hun
    Atillla the HunBulan Yang lalu

    Interesting video One wonders how far piston engines would have developed if jet engines appeared ten years later.

  • Star ful
    Star fulBulan Yang lalu

    Nice technical analysis of propellor limitations. Still amazing to see the Superprops!

  • b0B
    b0BBulan Yang lalu

    also hope you enjoyed your stay here in italy:)

  • b0B
    b0BBulan Yang lalu

    unexpected adam shoutout is unexpected

  • Zues Toots
    Zues TootsBulan Yang lalu

    Hemi style heads are used by almost all manufactures now. Chrysler never really got it right. Ford took the idea and improved it, while GM stole from Ford. The LS is largely based on the small block Ford

  • David F
    David FBulan Yang lalu

    I love Italian design; they get the most out of the least so to speak. Look at the air-cooled Ducatis and Alfa four cylinders.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    Yes, I know something about those Alfa 4 cylinders.

  • Justin Higgins
    Justin HigginsBulan Yang lalu

    A lot of people think a hemi just means the plugs screw into the center of the valve cover. So many arguments I've had over that misunderstanding.

  • Pat Cattin
    Pat CattinBulan Yang lalu

    Turbo charger is a turbo charger. A supercharger is a supercharger. The names are not interchangeable

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    Turbocharging is a form of supercharging, and it's correctly called turbosupercharging within the context of WW2 aviation.

  • Brad Shropshire
    Brad ShropshireBulan Yang lalu

    the lax hilton has elevators like that

  • Karl P
    Karl PBulan Yang lalu

    It's funny you mention 37mm cannon and B-29. A Japanese high altitude experimental twin fighter, maybe a modified Ki-96, blew a B-29 engine clean off the wing with a single hit from it's 37mm cannon. The B-29 made it back to Guam, and this 1945 account has been verified from both sides.

  • morskojvolk
    morskojvolkBulan Yang lalu

    Over 200K views and only 70K subs. That ain't right, subscribe people!

  • Whiteshell-Wildlife & More
    Whiteshell-Wildlife & MoreBulan Yang lalu

    *The sound those engines give off...there is nothing like it....I was standing outside work 5 years ago....when all of a sudden I hear this marvellous sound overhead that I've only heard on documentary's.....a B-17!! My jaw just dropped....where I live we don't get ANY airshows... to see a B-17 flying is quite the sight!* *Then I hear.. for a mere 600 CAD $ I could of gone for a ride!! Found out too late and they were all booked....hopefully they come back one day :/*

  • Paul Kearsley
    Paul KearsleyBulan Yang lalu

    With lefts (alevator) selecting the floor number outside is quite popular in Europe

  • 2serveand2protect
    2serveand2protectBulan Yang lalu

    48 cylinders ...radial...water-cooled ?? what the ff...

  • 2serveand2protect
    2serveand2protectBulan Yang lalu

    PS. ..."demise of piston-engined planes" - but then again! - forgive me but didn't you use "Skyraiders" for close support still in the Vietnam-war?? In Corea - didn't the Americans still use the "Corsairs" to bomb the SH** out of the commies??... or is my memory simply f**Up (...cause that happens too, lately!)...

  • 2serveand2protect
    2serveand2protectBulan Yang lalu

    Naah..."demise"! :) I still LOVE that freaking Mustang! It's probably the most elegant - BEAUTIFUL plane ever made! :) PS. At least as far as PISTON-engines propelled planes go. :D Either way! It IS a beauty!

  • Donna Nelson
    Donna NelsonBulan Yang lalu

    The rainy peony finallly stain because call noteworthily slap save a outstanding quince. abaft, debonair wolf

  • William Charles
    William CharlesBulan Yang lalu

    I have a difficult time trying to understand why Republic Aircraft's documents were destroyed without regard toward their historical value. What kind of genius would come up with that idea unless they were trying to hide illegal activity such as corruption?

  • FiveCentsPlease


    Bulan Yang lalu

    +William Charles Probably for the same reason that the USAF threw away/destroyed hundreds if not thousands of gun camera film reels from WW2 decades ago---nobody thought they were important. Imagine the bits of history that were captured on those rolls of film.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    I put the explanation in the video description.

  • Joel Atteberry
    Joel AtteberryBulan Yang lalu

    PROPS to you... ✌multiple

  • Tom Muc
    Tom MucBulan Yang lalu

    but schindler elevators are swiss not italian.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    Swiss spies probably stole it.

  • Jet Valmonte
    Jet ValmonteBulan Yang lalu

    Great video as always, Greg! I'm addicted to your videos, LOL!

  • James George
    James GeorgeBulan Yang lalu

    Great content. My dad was a WW1/WW2 aircraft enthusiast, and taught me all he knew about them. We built more than a couple of scale balsa models when I was young. It's really awesome to hear someone who knows how to fill the gaps in my knowledge, and how much my dad had committed to memory.

  • Ducthman
    DucthmanBulan Yang lalu

    The Secret History of Fighter Aircraft Engine Development in WW2 Institution of Mechanical Engineers - IMechE idmilk.info/cycle/video/fp52pc2X1Y6MoZQ.html

  • fred Ted
    fred TedBulan Yang lalu

    Thank you , may I say you have a great voice for narration , on a fascinating subject Super Props . Wales UK.

  • Michael Guerin
    Michael GuerinBulan Yang lalu

    First floor is the first floor (or lift) above ground. Any carpenter (like me) will tell you that. I do not know where the trend of calling the ground floor, the first floor came from BUT I suspect that it has something to do with the development of non-load bearing walls and skyscrapers, in places like Chicago where underground tunnels and multi-level cellars became necessary to move/store goods and fuel, etc., due to congestion and climate issues. Yanks still talk about getting in on the ground floor so ... I suspect it was a response to the adoption of multi-level cellars and also multiple street entrances, resulting from the ability to create larger floor plates with relatively small quantities of building material, i.e. which floor do you call the ground floor?

  • Michael Guerin

    Michael Guerin

    Bulan Yang lalu

    @Greg's Airplanes and Automobiles Could be BUT the concept of having a timber, stone or concrete surface on the ground floor of pretty much every building, instead of dirt, is relatively new, even in the developed world. That is why I made my comment, as a carpenter. The first floor was, and in many cases, still is, the first floor to be constructed from timber and/or stone and/or ferrous metal. Thanks for your videos. I reckon they are well put together and very well researched. I like the fact that you do not pretend to specific knowledge you do not have.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    Maybe, or it could be because the first floor is literally the first floor.

    KURT BENNETTBulan Yang lalu

    I would like you to do a vid on the use of Nitrous in WW2, which planes used it and show/display, how that system was implemented into the engine (foggers, directline?) and also how much power and for how long it gave. Also, a question-rudder. I know this is going to start off sounding like a sad question, but in the video game called Warthunder, in 'arcade' mode, one is able to use the rudder to make almost u-turn like moves in the air. However, in that same game, in 'realistic' mode, use of the rudder this way makes the plane uncontrollable in such a way. In the end, for a dummy like me, what if the use of a rudder in air flight, as opposed to perhaps only it having a big use on the ground, taxiing, etc. Sorry for the stupid question.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    I cover nitrous a little bit in my Ta152 video because it had a two stage nitrous system. I haven't flown on Warthunder so I can't comment on how realistic or unrealistic the rudder is.

  • Vintovka
    VintovkaBulan Yang lalu

    These late propeller planes are awesome, but the real magic is in those amazing engines. The technology had truly reached its apex.

  • rawills5339
    rawills5339Bulan Yang lalu

    Good extra post on elevators.

  • valdorhightower
    valdorhightowerBulan Yang lalu

    How fast do you think that the P-72 would have been capable of if it had been given swept wings like the MIg-15 and F-86?

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    I don't know.

  • valdorhightower
    valdorhightowerBulan Yang lalu

    More shortsightedness by the Army Air Force. While the P-72 wasn't as fast as the Mig-15, it certainly was faster than the P-51s stationed in Japan at the outbreak of the Korean War, and the P-72 was certainly more maneuverable than a Mig-15. An interesting what if.

  • Jay Babcock
    Jay BabcockBulan Yang lalu

    I died inside when you said republics records were destroyed.

  • Evan Moulds
    Evan MouldsBulan Yang lalu

    Hey I work at Continental!

  • David Whitesel
    David WhiteselBulan Yang lalu

    Do you know anybody that can use Continental or Lycoming cylinders

  • Chester Dougherty
    Chester DoughertyBulan Yang lalu

    The modern hemi is still a hemispherical chamber. It's actually a throwback to the early 354 hemi design, one that all top alcohol and fuel race teams have moved "back to". Valves stood up and piston domes flattened out to save recip mass. Just an FYI

  • Biker Max
    Biker MaxBulan Yang lalu

    Very good presentation. So many nostalgic people believe that it was a mistake abandoning advanced propellor aircraft - but it was all about the engineering and it made perfect sense. The only real advantage of propellor planes over early jets was in fuel consumption, especially at low altitude.

  • Lisa B
    Lisa BBulan Yang lalu

    I would love to see your analysis of the German 88mm. Why was it the best gun of the war? That statement was per my grandfather.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    I simply don't know enough about guns to comment on which was the best of the war.

  • Sic semper tyrannis
    Sic semper tyrannisBulan Yang lalu

    The XP-69 seems to me like it was heavil influenced by the Dornier Do-335 Pfeil :P

  • HairyPooNugget
    HairyPooNuggetBulan Yang lalu

    Greg, Have you seen this? idmilk.info/cycle/video/fp52pc2X1Y6MoZQ.html It answers some of the questions I had from your vids.

  • Sean M
    Sean MBulan Yang lalu

    Greg, I would highly recommend you watch this: idmilk.info/cycle/video/fp52pc2X1Y6MoZQ.html There is some rather interesting and perhaps unique information in the video.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    I have seen it, and I'll make a response to it at some point.

  • Robert Kovach
    Robert KovachBulan Yang lalu

    Hey Geg, I used to get this magazine about 25 years ago called War Birds. In one issue was a story about the P51H. I never new this modal existed and was fascinated. The article told that they were going to do a nuclear bomb test deep in the desert of Australia. They draged a bunch of P51Hs out there to see what would happen to them during the test. Apparently the planes received little damage and were left in place for decades if I'm not mistaken. The article said someone found out about this, I can't remember who or what organization it was but they got permission to remove the aircraft, so they worked out in the desert and got them into flying condition and flew them out. I remember the article said that they were going to be restord, I don't recall ever hearing about them again. I know the article said the H modal is the rarest and I think it said these were the only surviving examples and I believe they were able to fly 5 aircraft out but there were more left behind. I could be wrong. I was wondering if you had ever heard about this and know what happend to them or anyone else who happens to read this. I always wondered! Thanks!

  • Robert Kovach

    Robert Kovach

    Bulan Yang lalu

    @George Pantazis wow! Thanks for your reply! I was starting to think I imagined it or got the story wrong. I would think because there Hs they would be prised possessions and they would be famous in the war bird community. Yes if you know of a video about them I would be very interested to see it. This has been on my mind for decades. Thank you so much for your reply!!

  • George Pantazis

    George Pantazis

    Bulan Yang lalu

    YES IT IS TRUE .Out in the middle of the desert in South Australia,5/6 p51 where parked in pits ,out in the open,and behind Bourns ,to test the best way to park,in a atomic blast .the planes survived and at least one was in good enough shape after decades out side to be flown to Adelaide ,after some minor repairs,the rest where taken to Adelaide some where sold and are in the US.there is a film on it ,Utube I will send a like if I can find it.

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    That's interesting, I have never heard about it, and don't know what happened with those planes.

  • muskeptic sometimes
    muskeptic sometimesBulan Yang lalu

    I would call the f82 mustang n fehavilland hornet closest to superprop to see service (korea n Malay). P52H served in reserve units. F7F fought in Korea so did Sea Fury.

  • Cowboy Bob
    Cowboy BobBulan Yang lalu

    idmilk.info/cycle/video/fp52pc2X1Y6MoZQ.html July 27, 2020 _The Secret History of Fighter Aircraft Engine Development in WW2_ - An excellent presentation that I think Greg's subscribers might appreciate. A relatively long presentation that mostly compares Merlin, BMW and Daimler Benz engines from a problem solving perspective. Aerodynamics and even a comparison of the UK and German synthetic fuel work are touched upon when appropriate. The presenter refers to modern F-1 engineers' surprise that some of their design solutions appeared in those engines. IDmilk will probably suggest other work by this author, presenter. If YT doesn't you probably will search for it yourself after watching this.

  • Korben Dallas
    Korben DallasBulan Yang lalu

    The ground floor being zero makes sense: If your are at floor n, you are n floors up.

  • Korben Dallas

    Korben Dallas

    Bulan Yang lalu

    @zogworth That too: If you're busy at the Euro-2nd floor and want to get to your car in the 2nd basement, you have to go 2-(-2) floors down.

  • zogworth


    Bulan Yang lalu

    Especially if you can go down too.

  • Korben Dallas
    Korben DallasBulan Yang lalu

    I've seen one of your Sicily elevators in Bonn, Germany. Agreed, they are confusing at first but it offer more potential. I've read that many people step into a elevator going into the wrong direction, just because they don't want to wait anymore. That wouldn't happen with the Sicily system.

  • Dale Comer
    Dale ComerBulan Yang lalu

    I've long been amazed at how many dead end U.S. military aircraft programs there were during WWII. Excesses resulting from the perception that there was a bottomless well of OPM.

  • Knight Rider1223
    Knight Rider1223Bulan Yang lalu

    Great info, thanks Greg!

  • Joseph King
    Joseph KingBulan Yang lalu

    9:32 Actually, the British copied it. They were having cooling issues with a radial for _something_ (can't remember the aircraft) and it wasn't until they examined an FW 190 that crash landed on British soil that they found out how the Germans managed to keep the closely cowled engine cool so they copied the design and put a fan inside the cowl.

  • Mark Catton

    Mark Catton

    16 hari yang lalu

    It was a Radial engine version of the Typhoon/Tempest. Eventually becoming the awesome Fury.

  • Hoa Tattis
    Hoa TattisBulan Yang lalu

    Why were the records destroyed?

  • Greg's Airplanes and Automobiles

    Greg's Airplanes and Automobiles

    Bulan Yang lalu

    Check the description.

  • Hal Lo
    Hal LoBulan Yang lalu

    Hawker Sea Fury! But what makes we wonder is that all those US "Super Prop" designs bear resemblance to German late war designs like the Dornier Do 335 or Japaneese Nakajima Hayate or Kawanishi Shidenkai. Maybe the answer to this gave Dr Boelkow already: the Germans as the Japanese had to relay on aerodynamics whereas the allies had the engines and the high octane fuel.