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Bomber_12th
November 25th, 2010, 18:28
In spotlighting the F-6D Mustang "Lil' Margaret", I figured I would skip writing out a long background on the aircraft, as I did for previous variants, since there doesn't seem to be much interest in it. Instead, through several more screenshots, I figured I would highlight many of the details of the model.

In this first view, one can see the defining feature of what made an F-6D what it was, the camera ports. As configured within the "Lil' Margaret" restoration, a K-24 camera is installed in the bottom left-facing camera port. At any one given time, only one camera can be installed in the aircraft, as there is not enough room for the K-24 and one of the larger types, installed at the same time, and it would also off-set the center of gravity too far. Per operations, either the K-24 could be fitted, or the larger K-17 or K-22. Either of the larger cameras could be mounted facing out of the top left-facing port. While not featured in the restoration, most original F-6D's were fitted also with a downward facing camera port, in which any of the three camera choices could be mounted. Providing room for the cameras, the control-surface lines had to be routed differently, and some of them can be seen through the upper left-facing camera port. The red placard underneath the fuel cap, as well as being mounted to the camera access door on the other side of the aircraft, provided information on how much fuel could be put into the fuselage fuel tank based on which cameras were installed. Even with no cameras installed, the mounting brackets created enough weight, that only a limited supply of fuel could be put into the fuselage fuel tank for safe operation, otherwise the center of gravity could be shifted too far aft.

Information presented on the placard:

Without any cameras - only 60 gallons were to be filled in the fus. tank
When both a camera and the MX-241 are installed - no fuel was to be placed in the fus. tank
When any camera is installed - only 30 gallons were to be filled in the fus. tank
When the MX-241 is installed, but no camera - only 40 gallons were to be filled in the fus. tank

http://i7.photobucket.com/albums/y282/Bomber_12th/Image1-9.jpg

From this mostly top-down angle, you can more clearly make out the radio/battery/fuel tank installation in the back of the cockpit (this is the first time in flightsim, that this area has been recreated both accurately and authentically). On the left wing, the camera-sighting markings are applied exactly to how the original service manual specifies, by positioning and dimensions. Just as specified, each cross includes the angle, stenciled next to it. These marks correspond with accurate cross-hairs painted on the canopy (also applied both outside and in).

http://i7.photobucket.com/albums/y282/Bomber_12th/Image2-10.jpg

In this right-side view, one can see the camera access door, just behind the fuselage star & bars, accurately recreated as on the F-6D. The drop tank plumbing is completely accurate - featuring a feed line and a pressure line.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image3-9.jpg

In this head-on shot, the accurate tail-warning radar antenna array can be seen, on the vertical fin. Beneath the wings, a six-set of zero rail rocket launcher stubs are installed. Both the front and rear rocket stubs are fully accurate, and were modeled using original engineering drawings. They each feature original solenoids, clamps, plug-ins, wire knifes, and more. The squadron markings around the top of the nose, are exact to the paintwork on the restoration.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image4-9.jpg

In this exterior view, the camera access door can be seen more clearly. Beneath the aircraft, the plumbing of the overflow drain pipes have been modeled to match this exact aircraft. The drain pipes, extending out from the aircraft, allow the aircraft to stay cleaner much longer.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image5-8.jpg

And a final view, as posted before, showing the bottom of the wing, and the completely accurate rocket launcher stubs and drop tanks to advantage. All underwing stencils are accounted for, many of which have never been applied to a flightsim Mustang before.

http://i7.photobucket.com/albums/y282/Bomber_12th/lilmargaretrocketports.jpg

Cag40Navy
November 25th, 2010, 18:47
Very Awesome! My question is what purpose did the cross marks on the wing serve in relation to the camera?

Bomber_12th
November 25th, 2010, 19:20
Here are various views around the cockpit on this specific aircraft.

A general view of the instrument panel.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image10-7.jpg

Note in this view the camera controls and circuit breaker panel, mounted just in front of the engine control unit. This worked in conjunction with the cockpit-mounted camera intervalometer.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image7-7.jpg

An over-all view of the fully reproduced intervalometer, mounted to the floor. This device was used to control the interval at which photos would automatically be taken. In manaul setting, you could also use the device to take individual photos.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image8-8.jpg

Here are the cross-hairs painted on the inside of the canopy. These are reproduced exactly as the service manual specifies - each cross is 1" wide, with each line 3/64" thick. They are spaced and positioned individually, exactly according to the original service manual guide.

http://i7.photobucket.com/albums/y282/Bomber_12th/Imagecrosses.jpg

Standard late-model right-side cockpit, complete with AN/APS-13 tail warning radar panel and bell.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image9-7.jpg

A general view of the cockpit. The wood floors and kick plates are not WWII-authentic, but common in restorations, as the floor stays much cleaner this way, rather than if it was finished accurately, with non-slide black paint.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image14-5.jpg

A view looking down into the cockpit, showing the Warren McArthur manufactured seat and floor details.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image12-5.jpg

A view showing the armor plate, headrest, and canopy assembly.

http://i7.photobucket.com/albums/y282/Bomber_12th/Image13-4.jpg

Bomber_12th
November 25th, 2010, 19:38
Very Awesome! My question is what purpose did the cross marks on the wing serve in relation to the camera?

Cag40Navy - that, I am still not entirely confident on. The scans I have are from the original servicing manual, and only tell of how to exactly apply the markings - and I made sure I followed all of the instructions to the Nth degree. They do not cover how they were used. Within the manual itself, they are referred to as 'Compass Sighting Marks'. As far as I know, based on a factory photo, they seem to have been used for aligning the camera while on the ground.

Edit: I should add that, while I believe the left-wing marks were used to align the camera on the ground, the canopy cross-hair marks may have been used for sighting the target from the air, provided whatever angle was used (marked on the wing) to align the cameras.

JIMJAM
November 25th, 2010, 20:06
Thanks for the lesson. Good stuff!

TARPSBird
November 25th, 2010, 22:09
The canopy and wing X's were probably used to sight the oblique cameras for a desired view angle. A "high oblique" provides coverage of the target with a horizon reference for orientation, a "low oblique" looks down on the target from a steeper angle for more detail. I doubt that any of the F-6D's cameras were on rotatable mounts so the pilot had to raise/lower the wing to aim the cameras. An experienced photo driver will have a good feel for altitude and stand-off distance when doing oblique photo runs and can get the target positioned dead-center on the film. As a former photo intel guy I'd love to see some of the original imagery from the camera that shot 9"x9" negs with a 12" focal length, I'll bet that was nice stuff.

Bomber_12th
November 26th, 2010, 09:32
TARPSBird, thank you very much for that information, it is greatly appreciated!
Here are just a few of the documents I used, together with photos of the restored aircraft. During the restoration process, these same illustrations were used to accurately recreate all of the F-6D markings.

http://i7.photobucket.com/albums/y282/Bomber_12th/camera_alignment.jpg

http://i7.photobucket.com/albums/y282/Bomber_12th/camera_alignment2.jpg

The K-24 camera installation:

http://i7.photobucket.com/albums/y282/Bomber_12th/K-24.jpg

Lenop
November 28th, 2010, 16:17
Well, I really enjoyed reading about the Mustang's backgrounds! Thanks!