by Tommy H. Thomason

Thursday, March 31, 2016

Exterior Lights

A couple of people have suggested that I do a post on exterior lights. As it happens, I've done bits and pieces on the subject so herewith a summary of what I know so far. At the moment, it's a work in progress. Comments, additions, and corrections are welcome.

An overview of lights on the wing in the 1950s:

Position/Navigation/Running Lights

These are the standard red (left wingtip), green (right wingtip), white (tail) lights. On some late 1940s and 1950s Navy airplanes, there is a separate orange tail light. This appears to be a holdover from a pre-World War II CAA (the forerunner of the FAA) requirement for separate orange and white tail lights that would flash alternately (white-orange-white- orange) to improve visibility at night.


Anti-collision Lights

As a result of the midair collision of two civil airliners over the Grand Canyon in 1956, the CAA required anti-collision lights (rotating or flashing beacons) on aircraft for which type certificate applications were submitted after 1 April 1957. (Presumably, there was also a retrofit requirement.) My understanding is that the armed services were not obligated to comply, but they had midair collision concerns of their own so they were added. (When the Israelis got used A-4 Skyhawks, they were amused that they came with a red police-car gumball light.) Note that the anti-collision lights on the A3J Vigilante were retractable.

On aircraft with a long service life like the AD Skyraider, anti-collision lights were a retrofit. Blue ones generally didn't have the anti-collision light on the top of the vertical fin while gray/white ones did.

On some air-refueling tankers the anti-collision light on the bottom of the fuselage was green instead of red to differentiate them at night from other airplanes in the vicinity.

Approach Lights

These were provided for the Landing Signal Officer's benefit in judging the orientation of an approaching aircraft at night. See:
http://thanlont.blogspot.com/2012/04/night-carrier-landings-in-beginning.html
http://thanlont.blogspot.com/2012/11/approach-lights-redux.html

Recognition Lights

These were added at some point in the early 1940s for IFF (Identification Friend or Foe) and signaling purposes. They consisted of three lights, red/green/amber, on the fuselage belly or under the right wing and a white light on the top of the fuselage.


The lights could be separately turned on and off and also used to flash a Morse code signal with a "key" switch.
Landing and Taxi Lights

Some aircraft were fitted with landing and/or taxi lights. The first F4U Corsairs had a retractable light under the left wing but it disappeared early on in production. (It was not, as some would have you believe, replaced by a light in the wing leading edge. That was the approach light and it had been there since the XF4U-1)



Formation Lights

At some point, apparently in the late 1940s, formation lights were instituted for use at night. At least at first, these were blue lights "embedded" in the wings, sometimes only on the lower surface, along with possibly a light on the top of the fuselage. See http://tailhooktopics.blogspot.com/2013/02/f8f-formation-lights.html

Later on, the lights became small rectangles on the side of the fuselage along with a light on each wingtip separate from the position lights. These were eventually replaced by larger and more numerous so-called "slime" lights that appeared to be yellow when not lit in daylight and a glow-stick green when lit at night.


Refueling Stores

Buddy tanks had lights to signal the receiving pilot. See http://tailspintopics.blogspot.com/2015/06/things-under-wings-inflight-refueling.html

Monday, March 28, 2016

Early U.S. Navy Ejection Seat

Up until the late 1950s, each airplane company building carrier-based jets for the U.S. Navy was  responsible for providing the ejection seat in accordance with a Navy-furnished specification. (See http://thanlont.blogspot.com/2011/02/transition-to-martin-baker-ejection.html)

The specification reflected some of the features developed by Martin-Baker, the most notable being the use of a face curtain for the final step of ejecting. (There originally was a preparatory step, which in part served as a safety to assure the pilot seating on the seat that it would not fire accidentally.)

The Navy tested the contractor seats by ejecting them from the rear compartment of a Douglas JD.

This is an early Douglas seat with a separate seat bucket inside the seat frame.

This is a Grumman seat photographed by the Navy test unit in July 1949. Note the large headrest and "figure-8" face curtain handle.

While taking a closer look at pictures of the F9F-3, I was surprised to see that the ejection seats in ones taken in 1949 appeared to have a different headrest than later Panthers: the bottom of the cushion was notably lower. The shoulder harness attachment to the seat also appeared to be lower as a result. While the headrest was not the same as in the picture above, it was similar in terms of the size of the cushion behind the pilot's head.


The F9F-3s used to carrier qualify pilots on Boxer in 1949 definitely appear to have the larger headrest. I can't be sure about the ones that deployed with the air group on Valley Forge. For more on the F9F-3, see http://tailspintopics.blogspot.com/2012/01/f9f-3-panther.html

Thursday, March 3, 2016

Obscureco F11F Detail Set

The Grumman F11F was a gorgeous carrier-based day fighter. Like it's propeller-driven equivalent, the F8F Bearcat, the timing was wrong. The F8F couldn't compete with jets (except in rate of climb contests) and the F11F wasn't as fast as the Vought F8U or have the endurance (for a more complete F11F story, see chapter 13 in http://www.amazon.com/dp/1580071104).

Once upon a time, Hasegawa produced a 1/72 scale F11F kit. Paul Boyer did it justice as he has so many other kits, only in this case was presented with one with a relatively low degree of difficulty.

The kit is a little deficient on cockpit interior and wheel well detail. Obscureco has responded to that with one of their excellent detail sets. The parts are very thin and well detailed.

1. Instrument shroud
2. Cockpit tub
3. Ejection seat
4. Rear Cockpit bulkhead
5. Cockpit detail, fuselage under sliding canopy
6. Sliding canopy shear web structure
7. Instrument panel
8. Nose wheel well
9. Left cockpit sidewall
10. Right cockpit sidewall
11. Ejection seat headrest
12. Control column
13. Left main gear well rear wall
14. Right main gear well rear wall
15. Left main gear center wall
16. Right main gear center wall
17. Left main gear front bulkhead
18. Right main gear front bulkhead

I haven't had a chance to dry fit it yet. Generally, cockpit detail sets run up against the fact that the thickness of the plastic forming the side of the kit fuselage is much thicker from a scale standpoint than the skin of the actual aircraft (also see http://tailspintopics.blogspot.com/2012/09/fitting-in.html). One hint in this case is the kit instruction to "Sand the sidewalls as thin as possible". They are already pretty thin.

The kit does not provide the prominent antenna under the aft part of the canopy on some F11Fs (or maybe the part provided is not a good representation; in any event it should be curved and not flat).
However, this particular antenna wasn't present in many F11Fs.

I am dubious about the accuracy of parts 13 and 14. A good part of the main landing gear wheel well was taken up by structure that resembles a can lying on its side. I don't think this is accurately represented by the large flat parts provided.
Note that the above is one of many, many Don Hinton F11F walkaround pictures that can be found here: http://www.philsaeronauticalstuff.com/f11f/f11f.html

However, the compete F11F he photographed (as opposed to the cockpit section preceding that series) has a black instrument panel. I'm pretty sure that it should be dark gull gray with black instruments like the cockpit section.

Although it's not currently on the Obscureco website (http://www.obscureco.com/products.html), it can be ordered as OBS72026 for $17 plus shipping as shown on the Purchasing Line on the website.

One build note I made on the kit once upon a time was changes necessary to make the main landing gear fit correctly in the well and together: