Another crack at the chart I posted earlier, better formatting this time:
From the chart Bronk posted, some impressions and comparisons:
1) WOW what a difference between Mfr Data and USAAF data.
2) Let's use the less-favorable USAAF data and compare speed against the LA-7 as modeled in AH.
<td>V@SL,mph V@5K',mph V@10K',mph V@15K',mph V@20K',mph</td>
P-63A-8, "wet", WEP 340* 360 379 396 408
P-63A-8, Mil Power 318* 337 355 373 388
LA-7, WEP 380 401 396 391 410
LA-7, Mil Power 358 380 396 391 410
*extrapolated from chart
3) For completeness, the mfr data:
<td>V@SL,mph V@5K',mph V@10K',mph V@15K',mph V@20K',mph</td>
P-63A-8, "wet", WEP 378 398 412 422 421
P-63A-8, Mil Power 344 364 382 399 416
4) Rate of climb using the mfr data (USAAF didn't report R/C directly but based on time-to-altitude comparisons, the mfr data is reasonably close)
<td>R/C@SL,fps R/C@5K',fps R/C@10K',fps R/C@15K',fps R/C@20K',fps</td>
P-63A-8, "wet", WEP 4100* 3900* 3800 3750 2900
P-63A-8, Mil Power** 3200 3200 3300 3100 2600
LA-7, WEP 4400 4100 3300 2850 2400
LA-7, Military Power 3600 3750 3300 2850 2400
*"dry"; no data for "wet"
**extrapolated from time-to-altitude data
Conclusion 1:
If you accept Mfr's data as correct, the P-63A-8 is nearly competitive with the LA-7 below 10K and faster above 10K at WEP output.
If you accept USAAF data as correct, the P-63A-8 is much slower than the LA-7 up to about 12K and is then a match but at WEP output only.
Conclusion 2:
The P-63A-8 is nearly a match for the LA-7 in rate of climb below 7K and climbs better than the LA-7 above that mark.
Moot, thanks a lot for the table format tips
