Hummingbird Posted February 3, 2018 Share Posted February 3, 2018 (edited) I've been looking through the NACA TN 1044 report Yo-Yo says he has used as the basis for his lift coefficient figures for the P-51 & Fw190, and long story short there appears to be no reason for modeling a similar CLmax for the P-51 & Fw190, as the real life difference appears to be in the range of +0.2 in the Fw190's favour at any realistic dogfighting speeds. TN 1044 report numbers summarized Link to full report: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930084610.pdf NACA 23XXX (F6F, Fw190 etc) results: FT high alt / FT low alt M 0.30 = -- / -- M 0.35 = 1.35 / -- M 0.40 = 1.28 / -- M 0.45 = 1.16 / -- M 0.50 = 1.02 / -- NACA 00XX (P-39, Me262 etc) results: FT high alt / FT low alt M 0.30 = 1.20 / 1.24 M 0.35 = 1.12 / 1.18 M 0.40 = 1.05 / 1.14 M 0.45 = 0.97 / 1.08 M 0.50 = 0.92 / -- NACA 66-XXX (P-51, Tempest etc) results: FT high alt / FT low alt M 0.30 = 1.12 / 1.23 M 0.35 = 1.07 / 1.16 M 0.40 = 1.05 / 1.19 (2nd peak low alt) M 0.45 = 1.02 / -- M 0.50 = 1.05 / -- (2nd peak high alt) Note: One unusual phenomenon to be noted in the report is the sudden and very short rise in lift measured on the NACA 66 series at M 0.37 to 0.4 at low alt, and a longer one at high altitude from M 0.47 to M 0.65. This curiousity is noted on pages 10 & 11 in the report. Edited February 3, 2018 by Hummingbird Link to comment Share on other sites More sharing options...
Hummingbird Posted February 9, 2018 Author Share Posted February 9, 2018 For further confirmation the F4U-1, despite a slightly higher wing loading, rather easily beat the P-51B in turns during comparative trials: http://www.wwiiaircraftperformance.org/f4u/p-51b-f4u-1-navycomp.pdf Snippets: "each plane was loaded to it own specified full fighter load, 9,100 lbs. for the P-51B, and 12,162 lbs. for the F4U's" "© The F4U-1 is everywhere superior in maneuverability and response." The F4U also uses the same NACA 23015 to 23009 airfoil selection as the Fw190 & F6F. Link to comment Share on other sites More sharing options...
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