Thunder over Michigan '21 Flightline Life
Jun 8, 2022 15:22:57 #
Jun 8, 2022 15:25:58 #
fourlocks wrote:
Amazing to see that many (flying) B-25's together like that.
As for the A400, why the 8 propeller blades? I'd been taught that fewer blades = more efficient. With too many blades, each blade is trying to pull through the turbulence created by the preceding blade. Or doesn't that count at high speed?
As for the A400, why the 8 propeller blades? I'd been taught that fewer blades = more efficient. With too many blades, each blade is trying to pull through the turbulence created by the preceding blade. Or doesn't that count at high speed?
It probably takes that many blades to absorb all that power.... from the "Aviation Pros" website... "Driven by an 11,000-horsepower engine, Hamilton Sundstrand's FH385/386 handles twice the power of any existing in-service propeller and offers a thrust efficiency peak close to 90 percent at high cruise speeds. Each wing features a pair of clockwise and counter-clockwise rotating propellers, which enhance overall aircraft stability and control, and further contribute to overall operating efficiency."
Jun 8, 2022 15:29:15 #
boncrayon wrote:
B-24's have 4 engines. The first 2 photos are B-25's. My Dad, "Doc" Clements bombed over Ployesti Rumania and was the 3rd and last of 21 B-24's to return. He and his crew got out just before it went up in flames!
My old professor was a cryptanalyst in WWII. He was on the team that decoded the German wind speed and directions over the target zone for those bombers. At that time on a 'need to know' basis, he did not know anything about that raid, but they did break the code. Glad your dad and crew made it home.
Jun 8, 2022 15:40:44 #
Thanks for this post. My Dad was a waist gunner on the B-24 in the Pacific. This brought back memories.
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