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Classic Wings Magazine WWII Naval Aviation Research Pacific Luftwaffe Resource Center
When Hollywood Ruled The Skies - Volumes 1 through 4 by Bruce Oriss


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PostPosted: Sat Jan 05, 2019 7:29 pm 
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by Dr. Marshall Michel
86th Airlift Wing historian

"During World War II, one of the constant tensions for combat air force leaders was quantity versus quality, usually played out in answering the question of “what modifications produced enough added value they were worth slowing the production line for?”

The usual answer was “very few,” so may air forces took a short cut and produced field modifications to improve the combat performance of front line aircraft. The most numerous and formal were the German Luftwaffe’s “Rüstsätz,” or field modification kits, to increase or vary the armament of its fighters.

The U.S. had a less formal system of modifications at forward field depots, notably “Pappy” Gunn’s armament modifications on A-20s and B-25s in the South Pacific, but the Army Air Force considered the most important field modifications were those on the 8th Air Force Bomber Command’s B-17 “Flying Fortresses” flying out of England.


Though the B-17 was one of the war’s outstanding bombers, when it began flying combat missions over Europe in late 1942, its first encounters with Luftwaffe fighters made it seem anything but a “flying fortress.”

The most common complaint was the limited, hand-held forward firing armament, which the German fighters exploited with head-on attacks. Other complaints were with tail heaviness, which made it tiring to fly in tight formation, poorly organized crew positions and a flawed oxygen supply system.

One of the 8th Air Force’s engineering officers, Maj. Robert J. Reed, was given the task of solving the problems, and in a few months he came up with a long list of suggested improvements for the B-17. The changes were beyond the capability of the U.S. depots in England to make, so the 8th Bomber Command gave Major Reed a B-17E and sent him back to Wright Field, Ohio, to make the modifications.

Major Reed’s changes were radical, especially in armament. He took the nose and tail power-operated turrets from a B-24 Liberator and mounted them on the B-17, where they provided much more firepower and better armor protection. The tail turret had a field of fire about six times greater than the original B-17 turret.

Since the nose was now taken up by the turret, the bombardier was moved to an under nose gondola, which provided such excellent visibility that he acted as the navigator too, reducing the number of crew members from 10 to nine.

The radio operator and his equipment were moved from the middle of the aircraft forward to a compartment next to the bombardier gondola, making it possible for them to communicate if the inter phone was shot out. More importantly, this moved the center of gravity forward and eliminated the tail heaviness. As an added benefit, this required a longer antenna wire, which provided a stronger signal.

The dorsal and ball turrets were replaced with lighter, roomier and better armored models, and the two waist gun positions were removed and replaced by a power boosted twin .50 machine gun mounted on top of the fuselage just above the old waist gun positions. It required only a single gunner, so the number of crew members was further reduced to eight.

The “barn door” type bomb bay doors were replaced with folding doors that extended only 8 inches into the slip stream. This cut drag during the bomb run and provided a tactical advantage, since the folding bomb bay doors were invisible from a distance. This meant that open bomb bay doors would not alert German fighters when the bomb run was beginning and the bombers could not maneuver. The oxygen system was redesigned so each crew member had double lines so if one was cut he would still receive a half supply.

The final results for the “Dreamboat,” as the project was nicknamed, were weight reduction of more than 1,000 pounds, the center of gravity moved forward to a nearly ideal point, all the manually operated machine guns were replaced with power operated weapons, and two crew members were eliminated. Speed and altitude performance remained the same because the drag of the bombardier’s “gondola” offset the reduced weight and improved the center of gravity.

When Major Reed brought the “Dreamboat” back to England in September 1943, it was well received. The formation flying characteristics were vastly improved, and the folding bomb bay doors and new oxygen system, seemingly minor points, were praised by the crews flying daily combat over Germany. The main complaint was the concentration of all the key crew members in the nose where they could be taken out with a single cannon shell.

Despite the improvements, incorporating the changes into the B-17 production line would have resulted in unacceptable delays for retooling and they were too extensive to be done in England, so Major Reed’s “Dreamboat” remained an object of curiosity in various depots for the rest of the war. The project was not, however, for naught. Many of Major Reed’s changes were incorporated in the new Boeing B-29 Superfortress and Convair B-32 Dominator, which were in their initial test stages and were to replace the B-17".

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The experimental B-17E "Dreamboat" 41-9112 at RCAF STATION GANDER

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PostPosted: Sun Jan 06, 2019 8:52 am 
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Mark,
Wow, thanks for this. Never even heard of this one.


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PostPosted: Sun Jan 06, 2019 9:21 am 
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I think Major Reef may have done more than he's given credit for...
The article simply states that they grafted B-24 turrets into the aircraft.
But given the 1943 timeframe of the conversion, was the B-24J ...presumably the donor aircraft since it was the first major version to have those turrets, even in production yet?

My point is rather than simply adapting the power nose and tail turrets into the Boeing, he may if had to work with prototype or preproduction equipment. And technical issues being what they are, that would have likely meant a lot of adapting and "de-bugging".

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PostPosted: Sun Jan 06, 2019 5:10 pm 
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JohnB wrote:
I think Major Reef may have done more than he's given credit for...
The article simply states that they grafted B-24 turrets into the aircraft.
But given the 1943 timeframe of the conversion, was the B-24J ...presumably the donor aircraft since it was the first major version to have those turrets, even in production yet?

My point is rather than simply adapting the power nose and tail turrets into the Boeing, he may if had to work with prototype or preproduction equipment. And technical issues being what they are, that would have likely meant a lot of adapting and "de-bugging".


From the looks of this pic, it appears that both turrets are rear B-24 turrets. So, that would be more inline with the date of the mods.

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PostPosted: Mon Jan 07, 2019 8:06 am 
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Jesse C. wrote:

From the looks of this pic, it appears that both turrets are rear B-24 turrets. So, that would be more inline with the date of the mods.

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That jives with the B-24 nose turret originally being a field modification itself, using a spare tail (only) turret to begine with

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PostPosted: Mon Jan 07, 2019 8:35 am 
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Is the top turret B-24 also?

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PostPosted: Mon Jan 07, 2019 8:45 am 
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Favorite post of 2019


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PostPosted: Mon Jan 07, 2019 9:20 am 
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Note about modifications to the B-17 in production

The Pearl Harbor attack of December 7,1941 finally brought the United States into the war and production of the B-17 rapidly increased. By July 1942, the US began forming the Eighth Air Force in Britain, equipped with B-17Es. The 'E' represented an important improvement over the earlier B-17s, in that it had a tail turret, eliminating a previous defensive blind spot. Production of the B-17F was undertaken by Douglas and Vega, a subsidiary of the Lockheed Aircraft Corp., but modifications were taking their toll in airspeed. There were more than four hundred modifications on the B-17F. The B-17F, now armed with eleven .50-cal. guns, could only reach 299 mph (481 km/h), but landing speed was up to 90 mph (144 km/h)! Service ceiling was 37,500 ft. (11,430 m) and range 2,880 miles (4,634 km). It took twenty-five and a half minutes to climb to 20,000 ft. (6,096 m). Three thousand, four hundred B-17Fs were produced by the three companies.


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PostPosted: Mon Jan 07, 2019 10:13 am 
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Some more views of that ugly looking thing.

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PostPosted: Mon Jan 07, 2019 12:42 pm 
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Did the modified B-17 "Dreamboat" ever fly in combat?


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PostPosted: Mon Jan 07, 2019 4:19 pm 
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Just when you thought you'd seen it all. Very nice!


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PostPosted: Thu Jan 10, 2019 6:55 pm 
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I remember seeing a model of this hanging from the ceiling of a model shop in CA when I was a kid in the 1970's... I believe somewhere close to Alhambra. At the time, I thought it must have been someone's fantasy mash-up. Nice to see it was an actual reality!


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PostPosted: Thu Jan 10, 2019 7:20 pm 
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Cool post Mark.

Ken wrote:
Is the top turret B-24 also?

Yes the top turret is indeed a Martin 250CE like what was used on the B-24, B-26, A-20 etc.

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