Why the US Built a WWII Fighter Twice as Heavy as the Enemy’s



Nicknamed “The Jug,” America’s 17,000-pound P-47 Thunderbolt was twice as heavy as Germany’s 7,000-pound Bf 109—so big pilots joked you could dodge bullets by running around the cockpit.
From its giant high-altitude turbocharger above 25,000 feet to an air-cooled radial tough enough to survive 20+ cannon shells and finish WWII with a 4.6-to-1 kill ratio, here is why that bulk was built to come home alive.

#P47Thunderbolt #Bf109 #P47 #WWII #aviation #aerospace #engineering #warbirds #USAAF #military #howitworks #shorts

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33 Comments

  1. ━━━━━━━━━━━━
    Sources · Further Reading
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    ■ 1. How much they weighed

    Wikipedia — Messerschmitt Bf 109
    Bf 109 G-6: empty weight 4,954 lb, gross weight 6,940 lb, max takeoff weight 7,496 lb. Powered by a 1,455 hp Daimler-Benz DB 605A inverted V-12, liquid-cooled
    https://en.wikipedia.org/wiki/Messerschmitt_Bf_109

    Wikipedia — Republic P-47 Thunderbolt
    P-47D-40: empty weight 10,000 lb, gross weight 13,230 lb, max takeoff weight 17,500 lb. Fully loaded, it weighed up to eight tons. Powered by an 18-cylinder air-cooled Pratt & Whitney R-2800 radial
    https://en.wikipedia.org/wiki/Republic_P-47_Thunderbolt

    ■ 2. The Jug and the cockpit joke

    Wikipedia — P-47 Thunderbolt (same page as #1)
    British pilots joked that a Thunderbolt pilot could defend himself from a Luftwaffe fighter by running around and hiding in the fuselage. The cockpit was relatively roomy and comfortable. The nickname "Jug" came from its milk-jug profile; some historians say it was short for "Juggernaut"

    Smithsonian National Air and Space Museum — Republic P-47D-30-RA Thunderbolt
    The fighter was nicknamed "Juggernaut," soon shortened to "the Jug"
    https://airandspace.si.edu/collection-objects/republic-p-47d-30-ra-thunderbolt/nasm_A19600306000

    ■ 3. The Bf 109's design rule and cramped cockpit

    Britannica — Bf 109
    In essence, the smallest airframe that could carry useful armament, built around the most powerful in-line engine available
    https://www.britannica.com/technology/Bf-109

    RAE (Royal Aircraft Establishment) — Bf 109E flight test report
    Results from trials of a Bf 109E captured in 1940, presented to the Royal Aeronautical Society in 1944. Listed among its bad points: "Cockpit too cramped for comfort"
    https://pilotfriend.com/flight_reports/reports/33.htm

    ■ 4. The propeller-hub cannon and low-altitude performance

    Wikipedia — Bf 109 (same page as #1)
    From the F-series on, a 20 mm cannon fired through the propeller shaft (the Motorkanone); the G carried a centerline MG 151/20. Its climb rate was outstanding, and leading-edge slats greatly improved its turning ability

    Luftwaffe Resource Center — Bf 109 F variants
    The F carried a Motorkanone firing through the propeller hub. Coolant radiators sat in each wing
    https://warbirdsresourcegroup.org/LRG/bf109_variants_F.html

    ■ 5. High altitude and the P-47's turbocharger

    Wikipedia — P-47 Thunderbolt (same page as #1)
    The turbine sat at the bottom of the fuselage, about halfway between the cockpit and the tail, fed by exhaust pipes running along each side of the cockpit. Air entered through an intake under the engine, traveled back to the turbosupercharger behind the pilot, and returned to the engine compressed. The system took up roughly half of the fuselage's internal volume

    Smithsonian National Air and Space Museum (same page as #2)
    Designer Alexander Kartveli fit the turbosupercharger system inside the aft fuselage, a particularly complex design challenge

    Wikipedia — 8.8 cm Flak 18/36/37/41
    US daylight raids generally flew at 21,000–24,900 ft
    https://en.wikipedia.org/wiki/8.8_cm_Flak_18/36/37/41

    ■ 6. The dive and the Bf 109's stiffening controls

    Wikipedia — P-47 Thunderbolt (same page as #1)
    P-47s were able to out-dive enemy fighters

    RAE — Bf 109E flight test report (same as #3)
    Above 250 mph the elevator became too heavy. At 300–400 mph test pilots described the ailerons as "solid," and at 400 mph a pilot pushing with full strength could apply only one-fifth aileron

    ■ 7. Eight .50-caliber guns

    Wikipedia — P-47 Thunderbolt (same page as #1)
    The primary armament was eight .50-caliber machine guns, with a combined rate of fire of around 100 rounds per second

    ■ 8. Toughness: liquid-cooled vs air-cooled

    Wikipedia — Bf 109 (same page as #1)
    Fighters with liquid-cooled engines were vulnerable to hits in the cooling system. The F, G and K had two radiators with a cut-off system, so the pilot could fly on one if the other was lost, or for at least five minutes with both closed

    Wikipedia — P-47 Thunderbolt (same page as #1)
    Its radial engine had a high tolerance for damage compared with liquid-cooled engines

    ■ 9. Robert Johnson, June 26, 1943

    Wikipedia — Robert S. Johnson
    A pilot with the 61st Fighter Squadron, 56th Fighter Group, flying a P-47C. An Fw 190 put twenty-one 20 mm cannon shells into his fuselage, rupturing the hydraulic system and shattering the canopy, and hydraulic fluid left him partly blinded. A single Fw 190 that followed ran out of ammunition, rocked its wings in salute, and turned back. Johnson landed at RAF Manston with more than 200 bullet holes. He finished the war with 27 victories
    https://en.wikipedia.org/wiki/Robert_S._Johnson

    ■ 10. The 4.6-to-1 kill ratio

    Smithsonian National Air and Space Museum (same page as #2)
    Jug pilots achieved an aerial kill ratio of 4.6:1. In Europe they destroyed more than 7,000 enemy aircraft, more than half in air-to-air combat, over more than half a million missions, with a loss rate of 0.7 percent per mission

    Wikipedia — P-47 Thunderbolt (same page as #1)
    The Thunderbolt ended the war with an aerial kill ratio of 4.6:1

    ■ 11. Simplifications in the script

    · "7,000-pound" and "17,000-pound" come from the Bf 109 G-6's gross weight (6,940 lb) and the P-47D's max takeoff weight (17,500 lb). Like for like, gross weights are 6,940 vs 13,230 lb and max takeoff weights 7,496 vs 17,500 lb.

    · "Twice as heavy" ranges from about 1.9 to 2.3 times, depending on which weights are compared.

    · In the source, the joke belongs to British pilots, who said a Thunderbolt pilot could run around and hide in the fuselage.

    · "The biggest engine in the smallest airframe" condenses Britannica's "most powerful in-line engine available."

    · The pilot's shoulders touching the canopy is an image for the cramped cockpit. The test report says only that it was "too cramped for comfort," and the aircraft tested was a 1940 E model.

    · "Above 25,000 feet, where the bombers flew" is a round figure. Actual daylight bombing altitudes were mostly 21,000–25,000 ft.

    · "The 109 gasped in the thin air" describes relative performance. By Wikipedia's figures, the G-6 topped out at 399 mph at 20,700 ft and 386 mph at 26,200 ft, while the P-47's turbocharger kept its power higher up.

    · "Behind its cockpit" refers to the turbocharger's place in the fuselage; it sat low, about halfway between the cockpit and the tail.

    · The stiffening stick is based on tests of a captured E model. The G is also described as heavy at high speed, but no equivalent G-model figures were confirmed.

    · One bullet stopping the engine within minutes sums up a typical cooling-system hit. From the F on, a damaged radiator could be shut off.

    · The twenty-one cannon shells came from the first Fw 190 to attack Johnson; the pilot who ran out of ammunition and rocked his wings was a single Fw 190 that followed. Some accounts name him as German ace Egon Mayer, but this is unverified.

    · What covered the windshield was hydraulic fluid, according to the record.

    · "Johnson made it home" means he got back to England alive. He landed at RAF Manston on the English coast, not at his own base.

    · The 4.6:1 ratio covers air combat against all German fighters. No ratio counting Bf 109s alone was confirmed.

    · The narration uses pounds and feet, while the on-screen graphics show metric units (≈3 t, UP TO 8 t, 8,000 m+, 8 × 12.7 mm).

    · Scenes in the video are reconstructions based on real photos and drawings, not archival footage.

  2. 米軍の撃墜報告はだいたい実数の十倍とみてよいようだ。これは、ラバウル航空戦を戦後調査した結果からも言える。

  3. Bob Stevens, USAF cartoonist, half-joked that a 47 could get a kill by staying in front of the enemy until the enemy wasted all his ammo trying to shoot through the cockpit's armored backplate, then drop behind and finish him off.

  4. 1 hole in the Radiator. The Bf 109 Pilot hit the kill switch to the side which was hit, and opens the remaing radiator on the other side all the way and keeps on fighting.

    It is a Bf 109 not s Spitfire or Mustang.

    Of the 10.000 P47 shipped overseas 5500 were lost.
    The P47 claimed 3800 aircraft in the ETO.
    How the americans count their kill to loss ratio, every fighter must have a positive kill to loss Ratio. Thats pointless propaganda.

  5. Ты это разрабам Ван тендера скажи как кувшин сбивает 4 месера и раненый летит до базы😂

  6. Тот факт что "Тандерболт" выдержал 20 попаданий из 20 мм авиационной пушки Bf-109 говорит о большой живучести этой американской машины .
    Скорее всего установка на более поздних моделях Вf -109 большего числа пушек (до 3 х 20мм) или замена центральной пушки стреляющей через полый вал винта с 20мм на 30ми , как раз и была вызвана тем фактом ,что для сбития таких самолётов как Р-47 или В-17 у немецких истребителей не всегда хватало бортовой огневой мощи.

  7. "Тандерболт" сражался в большинстве своем над Тихим океаном ,потому число его побед над Ме(Bf)-109 не так велико,как могло бы быть .
    К тому же счёт "Тандерболта" 1 к 4 к сбитым немецким пилотам явно надуманный, скорее всего он был близок 1 к 1 .

  8. Yea the P47 also had an armored cockpit, it was the most survivable fighter of the war!! Most people wanted to fly the Mustang, not me, I would have wanted to survive the war in a P47!!

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