Recent content by skychimp

  1. skychimp

    Which was the best night fighter?

    I know this comment is 4 years old, but interesting nonetheless. I cannot find a record of any P-61 having been lost to an enemy fighter. Can you elaborate as to what "popped" mean? Presumably you mean the P-61 was shot down, but given that there are no documented losses to enemy fighters...
  2. skychimp

    Question about ADI

    There was a significant difference. :lol: 115/145 was ultra-high performance fuel.
  3. skychimp

    Question about ADI

    I'm still looking the for the USAAF MAC document, but let me refer you in the meantime to this site's page on 150 grade fuel: http://www.spitfireperformance.com/150grade/150-grade-fuel.html Particularly, look at these documents: http://www.spitfireperformance.com/150grade/25225-doc.html...
  4. skychimp

    Question about ADI

    I believe that directive was in response to the availability of 100/150 PN fuel. 60" remained the limit for planes using 100/130, but the Material Air Command allowed the plane to be boosted to 64" when 100/150 PN fuel became available. The only USAAF units to use 100/150 PN fuel were fighter...
  5. skychimp

    P36 Mohawks vs JAF

    Bloody Shambles is an excellent series, even if very expensive.
  6. skychimp

    Best aircraft engine to see widespread use

    I agree, the R-2800. It wasn't really best at anything (< arguable), but it was good at everything. It's power ratings always seemed to be on the conservative side which led to very high reliability.
  7. skychimp

    Question about ADI

    67” was the Mustang’s rating on 100/130 PN fuel, not 100/150 PN fuel. The Americans used 72” on 100/150 PN fuel, and the British used as high as 80”. Again, 67” is the Mustang’s rating on 100/130 PN fuel. 70” is not the F4U-4’s rating on 150 grade fuel, 70” is its rating on 115/145 PN...
  8. skychimp

    Question about ADI

    The 1st pic is from Zeno's site. It comes from the Pilot's Handbook for the F4U-1. The second pic comes from Gruenhagen's book "Mustang: Story of the P-51 Mustang Fighter." With respect to the original question: we know the R-2800 B series engine (the engine in the F4U-1, F6F and...
  9. skychimp

    Question about ADI

    Ok. Here's a schematic of the Corsair system. Actually, I said the air flowed from the 2nd stage to the carb, actually if flows from the carb to the 2nd stage. No matter, this schematic shows the intercooler is between the 1st and 2nd stage superchargers: The Merlin used glycol to keep...
  10. skychimp

    Question about ADI

    This is only correct to the extent that the after and intercooler are both heat exchangers. Otherwise this is wrong. Examine a schematic. An AFTERcooler lies between both supercharger stages and the carb. The induction air goes from the 1st stage supercharger to the 2nd stage supercharger...
  11. skychimp

    Question about ADI

    Hi. My first post here. Someone asked this exact question on another board. Here was my answer: The answer is because the Mustang didn’t have an INTERCOOLER, it had an AFTERCOOLER. An intercooler is a heat exchanger between superchargers. An aftercooler is a heat exchanger between...
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