Author Topic: P-51 flaps partially fixed, but...  (Read 202 times)

Offline TDeacon

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P-51 flaps partially fixed, but...
« on: June 03, 2006, 12:58:38 AM »
Based on re-doing some of my previous measurements in the thread http://www.hitechcreations.com/forums/showthread.php?s=&threadid=176856, the P-51 flaps have been partially fixed, but still show a bug in version 2.08-1.  

According to my new measurements, the discontinuity has been removed from the 4/5 flap position, and now kicks in at the full (5/5) flaps position.  I also spot checked my control aircraft (Bf-109f4), and it has no such discontinuity at full flaps.  I have not yet checked the F4U, but I bet it has no discontinuity either, as it didn't before, and no mention of changes to the F4U were in HTC's release notes.  

FLAPS - v(mph) - t (s) - r(yds) - rate(dps) - comment
*******************************************
P-51b
0/5 159 150 371 12.0
1/5 156 152 369 11.8
2/5 150 151 352 11.9
3/5 139 156 337 11.6
4/5 128 157 313 11.5
5/5 120 204 381 08.8  jump in radius, r !!!
********************************************
Bf-109f4
0/4 139 143 309 12.6
1/4 140 142 309 12.6
2/4 133 139 288 12.9
3/4 124 139 268 13.0
4/4 108 139 234 12.9
********************************************

Again, this appears to be a bug because I am not aware that the P-51 was uniquely unmaneuverable at full flaps, when compared with say the Bf-109 or the F4U series, and I assume that this behavior is not intentional on HTC's part.  

Hopefully, therefore they can further tweak the P-51 flaps, so the turn radius decreases further at full flaps, as in the other planes.

Offline TDeacon

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P-51 flaps partially fixed, but...
« Reply #1 on: June 03, 2006, 09:50:54 PM »
Here's the 2.08-1 data for the F4U-1.  As with the 109-F4, no jump in radius at full flaps.  Test method as described in my first post, per the link above.  

FLAPS : v(mph) : t (s) : r(yds) : rate(dps)
*******************************************
F4U-1   (50% fuel = 180 gal)
0/5 141 158 346 11.4
1/5 138 153 329 11.8
2/5 126 150 294 12.0
3/5 116 148 267 12.2
4/5 106 147 242 12.3
5/5 099 145 223 12.4

So the P-51 is still the only one I've tested which shows the "jump in radius" at full flaps.