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V-22 Prop Configuration, 3-vs-4 blades
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? |
#2
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V-22 Prop Configuration, 3-vs-4 blades
"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? Well, you can bet your arse that all configs were considered, number of blades, length pitch width of blades, RPM range etc etc...That a/c is a real departure from the conventional and must have been a real headache to design and proove. I hope that they now have a safe aircraft, they sure had their teething problems didn't they?... -- -Gord. (use gordon in email) |
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V-22 Prop Configuration, 3-vs-4 blades
"Don McIntyre" wrote in message
oups.com... 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 suspect it is a compromise due to the amount of force that has to be applied through comparatively small components and the strength of the materials out of which those components can be built. -- Andrew Chaplin SIT MIHI GLADIUS SICUT SANCTO MARTINO (If you're going to e-mail me, you'll have to get "yourfinger." out.) |
#4
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V-22 Prop Configuration, 3-vs-4 blades
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 |
#5
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V-22 Prop Configuration, 3-vs-4 blades
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) |
#6
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V-22 Prop Configuration, 3-vs-4 blades
"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 |
#7
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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) |
#8
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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 |
#9
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V-22 Prop Configuration, 3-vs-4 blades
"Don McIntyre" wrote in message oups.com... 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? More blades = less efficiency. Shorter blades = less efficiency in vertical flight. They probably couldn't have absorbed the performance loss from both increasing the number of blades and reducing blade length. KB |
#10
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V-22 Prop Configuration, 3-vs-4 blades
Kyle Boatright wrote: "Don McIntyre" wrote in message oups.com... 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? More blades = less efficiency. Shorter blades = less efficiency in vertical flight. They probably couldn't have absorbed the performance loss from both increasing the number of blades and reducing blade length. KB How does more blades equal less efficiency? If that is true why do all current Helicopters use 4-5 blades instead of two like the legacy systems of the Huey and Cobra? Why do all modern turbo-props have more then two blades? Somthing sounds off here. Guesses are like.... Anyone actually involved in the engineering of the V-22 or at least privy to some of the original evaluation documentation? Reed |
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