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Mar 11 14 4:39 AM
Dave Bender wrote:B29A
26,760kg. Max payload. (max weight minus empty weight)
357mph. Max speed.
220mph. Cruise speed.
22,700kg. Max payload. 4,060kg less. 15% less then the B29.
354mph. Max speed. Almost identical.
286mph. Cruise speed.
The cruise speed is what gets my attention. A whopping 66mph faster. That translates into higher survivability as you are spending less time exposed to enemy
A bit of He-277 history. (4 engine variant of He-177)
June 1936. Bomber A specification.
Nov 1939. He-177 prototype first flight.
1940. Heinkel proposes a 4 engine variant of the He-177. Funding was refused.
Jan to Dec 1942. 145 x early model He-177s built with troublesome DB606 engines.
1943 to Aug 1944. An additional 950 x He-177s built with improved DB610 engines.
May 1943. Funding approved for He-277 program. Too late to matter as the He-177 is finally fixed!
Dec 1943. First flight of He-277 prototype. A total of 15 prototypes in all (including He-274).
The program was terminated during the spring of 1944 even though the He-277 appears to have been production ready. It did not have many teething problems.
Mar 11 14 4:47 AM
Capn Carl wrote:The only way to make the He-277 comparable with the B-29 is using apples to oranges comparisons: max cruise vs. normal cruise, 277 ext&int bomb load vs. B-29 internal only bomb load, etc. When compared apples to apples, the B-29 will come out on top in most categories. No wonder, it's 1/3 to 1/2 again bigger in almost every measurable vital statistic, and was designed several years later. It's lifting abilities were astounding for the time. They rigged up some underwing racks and got one in the air carrying TWO 22,000 lb Grand Slams. Try that with an He-277 or any other WW2 bomber. Nothing against the He-277, but the Boeing was a generation ahead of the WW2 4 engine bomber herd.
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Mar 11 14 7:25 PM
SimonG wrote:That is not a point about the relative qualities, rather an irrelevant point about production rates. Yep the B-29 was an inferior aircraft produced in superior numbers because USA was not under the burden of day and night bombing. Production of the He-277 at Schwechat Vienna was actually cancelled in April 1944. It is a little known fact that there was an overproduction of He-177 airframes at Mareinenhe Rostock where I have read figures suggesting 8,000 uncompleted airframes. The He-277 was a modification kit able to be used to convert the He-177 A-5 with a pressurised cockpit, new tail empennage, and longer span outer wings. Heinkel was well geared up to mass produce this aircraft early in 1944 and a political decision which has never been explained was taken to abandon the He-277. This has nothing to do with the quality of the aircraft and seems to pre-date fuel shortage issues. The point remains the B-29 was inferior in altitude and bomb load versus distance.
Mar 11 14 9:31 PM
Indeed the British were so frightened of the He-277 they rushed into development a special twin engined aircraft which looked like an overweight Mosquito called the Vickers Type 432 with twin Griffon engines and a mix of 40mm and 20mm cannon. Informally the Vickers 432 high altitude fighter was also referred to as the "He-277 Killer"
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Mar 12 14 12:18 AM
modern centimentric bombing radar can solve the major problem of strong high level winds with the right doctrine, training and equipment,
How accurate? Even with modern bomb sight CEP with iron bombs must be greater then 100 meters. Otherwise there would be no need for aircraft such as A-10 to fly low and slow for CAS missions.
Mar 12 14 12:42 AM
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Mar 12 14 1:26 AM
art wrote:He-177 had to get to Ural mountains. Let say the center of Russia. It did not. I do no know why.
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