Aces High Bulletin Board
General Forums => Aircraft and Vehicles => Topic started by: oboe on March 30, 2017, 09:54:19 AM
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I'm working on a skin for the P-51B and noticed my invasion stripes weren't lining up correctly with the gun barrel ports in the leading edge of the wing, when it dawned on me - our '51B has the wrong pair of wing guns deleted from the P-51D wing. The '51B has the outer pair of wing guns in each wing, when it should instead have the inner pair.
The wing tank/bomb hardpoint should be well outside the gun barrels, but instead it sort of sits under the wing between them.
I don't recall if anyone brought this up way back when the '51B came out; but maybe by calling attention to it again, this error can be fixed whenever the P-51s are re-modelled.
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Yeah, you have to do some goofy things to line up the stripes. It still doesn't work 100%. Offset the strip on top board from the leading edge aft about seven or maybe ten pixels. You use a variation of this for the bottom.
I will post some screenshots.
Another bug is you can see the wing on the opposite side when looking through the fuselage/glareshield junction.
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51B wing was not identical to the D wing at the wing root and elsewhere. The gun bays would not line up regardless I don't believe.
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Yeah, you have to do some goofy things to line up the stripes. It still doesn't work 100%. Offset the stripe on top inboard one pixel-- from the leading edge aft about seven or maybe ten pixels. You use a variation of this for the bottom.
I will post some screenshots.
Another bug is you can see the wing on the opposite side when looking through the fuselage/glareshield junction.
Fixed.
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51B wing was not identical to the D wing at the wing root and elsewhere. The gun bays would not line up regardless I don't believe.
The wing structure of B was Exactly the same as the D save the LE extension and Root Chord. The P-51B/C positioned two 50's between landing gear and bomb rack. The P-51D/K had the same two 50's between bomb rack and gear plus one just outboard of the bomb rack.
Same airfoil, same span, same Mean Aero Chord, etc - no change required to mount the guns vertically instead of angled. The same wing that mounted 2xHispano II 20mm in the Mustang IA/P-51 went to A-36 (mod for bomb rack and replace 20mm w/50 cal), P-51A (same as A-36, but no dive brake), P-51B/C (same as A), P-51D/K (same as Mustang I, IA, P-51, A-36 and P-51A/B/C except for adding one more 50 cal and greater ammo capacity). Landing lights and pitot tube and aileron mods differed but airfoil, span, rib locations, spar location, flaps - remained the same. The new LE introduced a secondary spar as well as landing gear uplock and door changes but did not change the wing.
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The wing structure of B was Exactly the same as the D save the LE extension and Root Chord. The P-51B/C positioned two 50's between landing gear and bomb rack. The P-51D/K had the same two 50's between bomb rack and gear plus one just outboard of the bomb rack.
Here's an image showing the discrepancy:
(http://i.imgur.com/b4AGrp6.jpg)
If the line drawings are accurate, it looks like there was greater spacing between the guns in the '51B's gun bay. The D has 3 guns fit into the same size bay, resulting in closer spacing between the barrels. I think HTC simply deleted the inboard guns to create the 4 gun B from the D's wing.
I also recall the orientation of the guns were changed, to address some belt feed problem caused by G forces when manuevering?
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It's one of several P-51B model quirks. The top cowling line makes an S turn by the windscreen.
There are some other problems with it like the left wing root fairing--the vertical line moves a pixel aft then forward again.
You can see through the fuselage by the canopy frame.
The horizontal stab fairing distorts near the rudder.
The wing root has a glossy silver/white section at the leading edge that you can't tame.
The wing leading edge shines no matter what paint or specularity you use.
The invasion stripes won't wrap around in a straight line no matter how hard you try. All you can do is camouflage it with a fading gray line.
Still, I enjoyed working on it. Learned a lot.
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Yes that S turn is wild - I tried counteracting it, but it turns into a real mess. Best left alone, that one.
The scale of the horizontal stabs is different than the scale of the wings and fuselage. A 1 px rivet is larger on the stab than it is on the wing or fuselage. It's much worse on the P-38's tail though.
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The wing structure of B was Exactly the same as the D save the LE extension and Root Chord. The P-51B/C positioned two 50's between landing gear and bomb rack. The P-51D/K had the same two 50's between bomb rack and gear plus one just outboard of the bomb rack.
Same airfoil, same span, same Mean Aero Chord, etc - no change required to mount the guns vertically instead of angled. The same wing that mounted 2xHispano II 20mm in the Mustang IA/P-51 went to A-36 (mod for bomb rack and replace 20mm w/50 cal), P-51A (same as A-36, but no dive brake), P-51B/C (same as A), P-51D/K (same as Mustang I, IA, P-51, A-36 and P-51A/B/C except for adding one more 50 cal and greater ammo capacity). Landing lights and pitot tube and aileron mods differed but airfoil, span, rib locations, spar location, flaps - remained the same. The new LE introduced a secondary spar as well as landing gear uplock and door changes but did not change the wing.
Referring to the shape.
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The plan view shape was different for the strake, different due to the Root Chord increase sweeping from Root to Sta 61.