P-51D versus P-47M

Discussion in 'Aviation' started by Jank, Mar 25, 2006.

  1. Jank

    Jank Member

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    Which of these would you rather go into combat with at 20,000ft?
     
  2. lesofprimus

    lesofprimus Active Member

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    P-47M hands down, no question...
     
  3. the lancaster kicks ass

    the lancaster kicks ass Active Member

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    P-47, comfortably.......
     
  4. Gnomey

    Gnomey World Travelling Doctor
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    P-47 for me as well.
     
  5. Sal Monella

    Sal Monella Member

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    Hell, I'd take one of those late war D models with the 2,535 horsepower and paddle blades over a P-51.
     
  6. FLYBOYJ

    FLYBOYJ "THE GREAT GAZOO"
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    A P-47M will feast with joy on the little Mustang....
     
  7. Jank

    Jank Member

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    Does someone know the climb rates and max speeds for the P-51D at WEP for the following altitudes:

    5,000ft -

    15,000ft -

    28,000ft -

    I'm curious to see how they stack up against the "M" in combat loaded weight of 13,275lbs:
    (Data comes from Republic Aviation)

    5,000ft - 3,775fpm climnb and 386mph max speed

    15,000ft - 3,425fpm climb and 422mph max speed

    28,000ft - 2,375fpm climb and 470mph max speed

    Sal, the late war P-47D with water injection and paddle prop at 14,500lb combat loaded weight has the following performance (Data comes from the following chart: http://img377.imageshack.us/img377/6500/p47dclimbandspeed7kd.jpg)

    5,000ft - 3,150fpm climb and 365mph max speed

    15,000ft - 2,950fpm climb and 405mph max speed

    28,000ft - 1,800fpm climb and 435mph max speed
     
  8. DerAdlerIstGelandet

    DerAdlerIstGelandet Der Crew Chief
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    P-47M as well. Better design, more rugged and as FBJ put it, it woudl feast on the overated P-51D.
     
  9. the lancaster kicks ass

    the lancaster kicks ass Active Member

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    and even if the P-51 got on the tail on the -47, she'd need to land to re-arm to get enough ammo to take out the -47..........
     
  10. mosquitoman

    mosquitoman Active Member

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    Very true, I'd go for the P-47 aswell
     
  11. Jabberwocky

    Jabberwocky Active Member

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    P-51D based on the Wright Field and Inglewood tests

    5000 ft - 3575 ft/min and 390-396 mph (radiator shutter closed vs shutter open)

    15,000 ft - 2975 ft/min and 409-412 mph

    28,000 ft - 1030 ft/min and 434-439 mph

    For comparison with British fighter of the same period


    Tempest V (ADFU and Hawker Trials)


    5,000 ft - 3,640 ft/ min and 405-412 mph

    15,000 ft - 2,750 ft/min and 420-430 mph

    28,000 ft - 850 ft/min and 405 mph


    Spitfire XIV (ADFU and Boscombe Down trials):


    5,000 feet - 4,650 - 4,870 ft/min and 382 - 391 mph

    15,000 feet - 3,600-3750 ft/min and 407-416 mph

    28,000 feet - 2,600-2,960 ft/min and 444-446 mph

    Of the three:

    The P-51D wins out overall in speed; more speed with less horsepower (1720 vs 2000-2050 for the Spit and Tempest). It had a very fast airframe.

    The Tempest is clearly the fastest below 15,000 ft, but the Sabre sucked above that because of its very simple supercharging.

    The Spitfire climbs like a lift. Its climbing harder at 15,000 feet than the others are at 5,000 feet. Sometimes there is no substitute for the small airframe, powerful motor, big wing combination. Fastest at high alt, but only by a squeak.
     
  12. Gnomey

    Gnomey World Travelling Doctor
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    P-47 for me too (to reiterate what I said earlier is this thread), may not be as agile as the P-51 but can take a lot more punishment.
     
  13. Jank

    Jank Member

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    Thanks Jabberwocky.

    Well, I am not surprised that the P-47 M is far superior to the P-51 but I am surprised that as low as 15,000ft, the P-47 D is about on par with the P-51 in climb and at the margin at which it exceeds the P-51 at 28,000ft.

    Are those P-51 figures at WEP and combat weight (full internal fuel and ammunition)?
     
  14. Sal Monella

    Sal Monella Member

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    How about the P-47-N. If you reduced the internal fuel load to that of the P-47-M or P-47-D, I wonder how she would climb? I understand that the P-47-N had fuel cells and not tanks and that they didn't need to be kept full or even used at all. Normally, you get condensation in tanks from the unused, air filled volume.
     
  15. Twitch

    Twitch Member

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    P-47 unless we end up corkscrewing down to low altitude and on the deck. Then I'll take the P-51.
     
  16. Jank

    Jank Member

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    The P-47 D and M models had an internal fuel capacity of 370 gallons. The N had an internal fuel capacity of 570 gallons. At about 6.5lbs per gallon, that would be 1,300 pounds. The P-47 N had a combat weight of 16,300lbs so the weight would drop to 15,000 lbs.

    P-47 D - 14,500lbs

    P-47 M - 13,275lbs

    P-47 N - 15,000lbs

    It would still weigh 500lbs more than a D but would have the benefit of larger wing area and the horsepower of the M.

    Frankly, I don't think that at 5,000 ft, she would be able to climb much more than about 3,350fpm or so.

    At combat load (16,300lbs), she climbed 2,950fpm at 5,000ft. Still, I might add, impressive for a single engined airplane weighing more than 8 tons. In fact, even at combat weight, she could climb at 1,600fpm vs. the P-51D at 1,030fpm at an altitude of 28,000ft.
     
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