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#11
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V-22 Prop Configuration, 3-vs-4 blades
Reed Judd-Dyer wrote
How does more blades equal less efficiency? Those of us that flew rubber band powered contest model aircraft way back ('40s-'50s) KNOW that the most efficient propellor has only ONE blade...and a counterweight on the other side. :-) Bob Moore |
#12
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V-22 Prop Configuration, 3-vs-4 blades
"Keith W" wrote:
"Gord Beaman" wrote in message .. . Dan wrote: Don McIntyre wrote: Why did they settle on the 3-blade configuration? Wouldn't a 4-bladed system allow for a smaller footprint on the ground (or ship)? Or is there too much thrust loss involved? I would think folding 3 blades would be easier and lighter than folding 4. Dan, U.S. Air Force, retired ?? Folding ?? -- -Gord. (use gordon in email) http://www.paravion.com/products/407...e_fold_kit.htm Keith Thanks Keith...I thought that Dan was referring to the V-22...I don't think that it 'has' folding blades does it?... -- -Gord. (use gordon in email) |
#13
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V-22 Prop Configuration, 3-vs-4 blades
Gord Beaman wrote:
"Keith W" wrote: "Gord Beaman" wrote in message ... Dan wrote: Don McIntyre wrote: Why did they settle on the 3-blade configuration? Wouldn't a 4-bladed system allow for a smaller footprint on the ground (or ship)? Or is there too much thrust loss involved? I would think folding 3 blades would be easier and lighter than folding 4. Dan, U.S. Air Force, retired ?? Folding ?? -- -Gord. (use gordon in email) http://www.paravion.com/products/407...e_fold_kit.htm Keith Thanks Keith...I thought that Dan was referring to the V-22...I don't think that it 'has' folding blades does it?... Yep, it sure does. If you could ever describe an aircraft as folding up like a pretzel, the V-22 is it: http://www.globalsecurity.org/milita...d-wing-seq.htm |
#14
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V-22 Prop Configuration, 3-vs-4 blades
Jim Carriere wrote:
Gord Beaman wrote: "Keith W" wrote: "Gord Beaman" wrote in message ... Dan wrote: Don McIntyre wrote: Why did they settle on the 3-blade configuration? Wouldn't a 4-bladed system allow for a smaller footprint on the ground (or ship)? Or is there too much thrust loss involved? I would think folding 3 blades would be easier and lighter than folding 4. Dan, U.S. Air Force, retired ?? Folding ?? -- -Gord. (use gordon in email) http://www.paravion.com/products/407...e_fold_kit.htm Keith Thanks Keith...I thought that Dan was referring to the V-22...I don't think that it 'has' folding blades does it?... Yep, it sure does. If you could ever describe an aircraft as folding up like a pretzel, the V-22 is it: Absolutely amazing!...Sorry Dan, I'm still shaking my head in amazement...quite an aircraft!. -- -Gord. (use gordon in email) |
#15
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V-22 Prop Configuration, 3-vs-4 blades
Bob Moore wrote: Reed Judd-Dyer wrote How does more blades equal less efficiency? Those of us that flew rubber band powered contest model aircraft way back ('40s-'50s) KNOW that the most efficient propellor has only ONE blade...and a counterweight on the other side. :-) Bob Moore A Helo with one blade would have to be the most uncomfortable ride, until after a minute or so, when it had shook itself to pieces. Jeremy Thomson |
#16
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V-22 Prop Configuration, 3-vs-4 blades
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#17
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V-22 Prop Configuration, 3-vs-4 blades
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#18
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V-22 Prop Configuration, 3-vs-4 blades
Best configuration for the V-22, you ask? In combat, a heap of burning
wreckage or in peace time... a cancelled project piece of scrap metal. Transitional a/c are inherently dangerous no matter what, and if the primitive Iraqis can down an Apache how much more vunerable is the tilt-rotor Osprey... or rather "Easy Prey"? Imagine an Osprey loaded with troops as it transitions to take off or land in Iraq. One RPG or heavy MG fire to the rotor system and the US will be scraping the remains of its troops out of the dirt and sand with shovels. Why doesn't someone cancel this flying cemetery already? Like the F/A-22 seems the number "22" in US inventory= disaster. The Craptor and Easy Prey need the axe. Cancelling the Craptor will save money while cancelling Easy Prey will save lives. Rob |
#19
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V-22 Prop Configuration, 3-vs-4 blades
Rob,
I don't understand your point. The same could apply to any "lift" vehicle. Helos, C-130s, C-17s, H-60s, you name it. The advances in design, the increase in speed and range over conventional helos seem to me to make the V-22 a large advance of helos. We've become so conditioned to our "safe" world that we tend to forget that new technology does take tme to mature and develop. Some have forgotten that the F4, F-14 and in particular the Century series jets that many of we aviation fans have come to know and love had their fair shre of crashes and developmental disasters before the matured into useable RELATIVELY safe systems. Cancelling the V-22 and F-22 leaves us with, what? When the F-35 comes along will you want to cancel that as well? I want our Armed forces to have the best. What can beat the F-22? Oh, wait, maybe we should buy Su-30s! I don't think so. |
#20
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V-22 Prop Configuration, 3-vs-4 blades
Rob Arndt wrote:
Best configuration for the V-22, you ask? In combat, a heap of burning wreckage or in peace time... a cancelled project piece of scrap metal. Transitional a/c are inherently dangerous no matter what, and if the primitive Iraqis can down an Apache how much more vunerable is the tilt-rotor Osprey... or rather "Easy Prey"? Imagine an Osprey loaded with troops as it transitions to take off or land in Iraq. One RPG or heavy MG fire to the rotor system and the US will be scraping the remains of its troops out of the dirt and sand with shovels. Why doesn't someone cancel this flying cemetery already? Like the F/A-22 seems the number "22" in US inventory= disaster. The Craptor and Easy Prey need the axe. Cancelling the Craptor will save money while cancelling Easy Prey will save lives. Rob This is from the fool who thinks Japan needs ICBMs, nuclear powered aircraft carriers and nuclear powered submarines to protect itself from China and North Korea. Then again he also believes a 34 pound weapon is an excellent E&E choice for downed air crews, the Earth is hollow, there's a secret still operational Nazi underground U-boat base in Antarctica.....etc. Dan, U.S. Air Force, retired |
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