wdolson
Posts: 7029
Joined: 6/28/2006 From: Near Portland, OR Status: offline
|
quote:
ORIGINAL: witpqs It seems clear that the US gave a high priority to protecting the pilot in single seat fighters. It's also clear that (at least for the most part) that had the luxury of having that alternative available. So, if the US had been stuck with (essentially) the same engines that Japan had, then what choices do you think the US would have made in single seat fighter design re pilot protection? The engine in the Zero, the Sakae series, was based on the P&W 1830 Twin Wasp. This was the same engine the F4F Wildcat had. So this is not a theoretical question. All but one of the world's flying Zeros today have P&W 1830s in place of the original engine. The one flying on an original engine was the first one restored, which belongs to the Chino Planes of Fame Museum. Before the war, the US led the world in radial engine design. This was driven by the civilian airliner market. The US also had the resources to boost the octane in aviation fuel as high as 140. Though 100 octane was most common. When existing engine designs were adapted to this high grade of fuel, they got much better performance. Most Axis aircraft flew on 87 octane. The BMW 801 caused logistical problems because it required a minimum of 92 octane. The development of the Ju-88 was plagued by a tug of war with FW for engines. The higher performing Ju-88s used BMW-801s, but demands for Fw-190s required Junkers to use lower rated Jumo engines for most Ju-88s. This made the C series night fighters somewhat anemic. The battles between F4F and Zeros in 1942 show what the design philosophies produced when using the same engines. The F4F was not as good as the fighters built around the P&W 2800, which was a scaled up 1830, but in the right hands it could hold its own against the Zero. Bill
_____________________________
WitP AE - Test team lead, programmer
|