Tilt-Rotor Aircraft

[taiidantomcat]

Nose job! Quack!



***added html link to article where the image resides-jjf***

[Jeffry Fontaine]

^ is that supposed to represent a dedicated SAR Osprey variant?

[elmayerle]

Hmm, that might go good on my SV-22 build for a surface-search radar to compliment the dipping sonar, sonobuoys, and MAD boom.

[Daryl J.]

Has the Bell HV-911 been resurrected?

[elmayerle]

http://www.bellv280.com

[GTX_Admin]

http://www.bellv280.com

Very interesting...

[jcf]

Looks like a Blackhawk crossed with the CTR7500 concepts:
http://beyondthesprues.com/Forum/index.php?topic=298.msg6220#msg6220

 

[elmayerle]

Looks like a Blackhawk crossed with the CTR7500 concepts:
http://beyondthesprues.com/Forum/index.php?topic=298.msg6220#msg6220

 

Well, t he US Army's initial requirement is for a Black Hawk replacement.  Oh, minor terminological item, the Sikorsky S-67 is the Blackhawk, the S-70/H-60 is the Black Hawk with navalized variants denominated as Naval Hawks in Sikorsky's documentation.

[elmayerle]

For those who've wondered about some of what I work on, check out "Xworx Osprey" in the middle of page 13 of the May, 2013 issue of Combat Aircraft.  The caption is a tad bit in error, it wasn't an engine fire, it was a major engine surge due to a high-time engine problem.  This photo shows the LH nacelle with the test & demo project I worked on installed.  If it continues to perform as well in testing as it has so far, I'll become quite busy this fall as we warp into developing the production version (I've already been told I will be very heavily involved as one of the last designers left who worked on the demonstrator).

[GTX_Admin]

Real World Westland Proposal from 1968:

[elmayerle]

Real World Westland Proposal from 1968:

The gearboxes and transmissions would be "challenging", considering what's needed for just one three-bladed proprotor.  Still, 'twould be nice to see a Bell/Westland teaming on tiltrotors.

[kim margosein]

Just did a little cipherin'.  Assuming the roters are 60 ft long, you would have to keep the props under 180 rpm or so to prevent the tip from going supersonic.

[elmayerle]

Odd thought that occurred to me; LV-22 sued by VX-6 for Antarctic operations along isde their LC-130J Hercules aircraft.

[Rickshaw]

Quick question:  I assume that tilt-rotors are rather load limited because of c-of-g limitations?  I expect you need to really balance fore-aft loading because of the central position of the rotors?

[Old Wombat]

Real World Westland Proposal from 1968:

I can see prop-tip velocities being an issue with this design, wouldn't take much for them to go way past supersonic.

Wonder if a 4-engined tilt-rotor design is workable? Maybe with the inner engine nacelles extended ahead of a (more) forward canted wing to reduce interference with/by the wing?

:)

Guy

[Gingie]

I wonder what a Italier 1/48 Osprey wing & engine combo would look like positioned on the 1/72 C-27 Spartan. I tried a quick mock-up on the 72nd C-130, and it didn't look quite right, but maybe the smaller C-27 could pull it off?

And yes, it would be RCAF FWSAR :-)

[finsrin]

Spartan concept seems like it otta work.  :)
Looked on ebay and they are on the pricey side.

[elmayerle]

For those who've wondered about some of what I work on, check out "Xworx Osprey" in the middle of page 13 of the May, 2013 issue of Combat Aircraft.  The caption is a tad bit in error, it wasn't an engine fire, it was a major engine surge due to a high-time engine problem.  This photo shows the LH nacelle with the test & demo project I worked on installed.  If it continues to perform as well in testing as it has so far, I'll become quite busy this fall as we warp into developing the production version (I've already been told I will be very heavily involved as one of the last designers left who worked on the demonstrator).

It's probably bad form to quote yourself, but I shall, anyway, for reference.  The test and demo program finished with results that were every bit as good as Bell's most optomistic analyses and starting 9/16/13 I'll be very heavily involved in developing the production version.

[elmayerle]

I wonder what a Italier 1/48 Osprey wing & engine combo would look like positioned on the 1/72 C-27 Spartan. I tried a quick mock-up on the 72nd C-130, and it didn't look quite right, but maybe the smaller C-27 could pull it off?

And yes, it would be RCAF FWSAR :-)

ISTR that someone did just that conversion here and the result was a most attractive aircraft.  How about a Russian derivative using a 1/72 AN-12 fuselage and 1/48 V-22 wings and engine?  The tail gun position would be a nice touch.

Alternatively, a Russian Quad Tilt Rotor using bits from two 1/72 V-22's and an AN-12 fuselage.

[GTX_Admin]

For those who've wondered about some of what I work on, check out "Xworx Osprey" in the middle of page 13 of the May, 2013 issue of Combat Aircraft.  The caption is a tad bit in error, it wasn't an engine fire, it was a major engine surge due to a high-time engine problem.  This photo shows the LH nacelle with the test & demo project I worked on installed.  If it continues to perform as well in testing as it has so far, I'll become quite busy this fall as we warp into developing the production version (I've already been told I will be very heavily involved as one of the last designers left who worked on the demonstrator).

It's probably bad form to quote yourself, but I shall, anyway, for reference.  The test and demo program finished with results that were every bit as good as Bell's most optomistic analyses and starting 9/16/13 I'll be very heavily involved in developing the production version.

I expect an in depth, detailed breifing next weekend...

[Old Wombat]

I wonder what a Italier 1/48 Osprey wing & engine combo would look like positioned on the 1/72 C-27 Spartan. I tried a quick mock-up on the 72nd C-130, and it didn't look quite right, but maybe the smaller C-27 could pull it off?

And yes, it would be RCAF FWSAR :-)

ISTR that someone did just that conversion here and the result was a most attractive aircraft.  How about a Russian derivative using a 1/72 AN-12 fuselage and 1/48 V-22 wings and engine?  The tail gun position would be a nice touch.

Alternatively, a Russian Quad Tilt Rotor using bits from two 1/72 V-22's and an AN-12 fuselage.

This is the build, by tc2324; Boeing CV-230 Herculean



:)

Guy

[elmayerle]

I expect an in depth, detailed breifing next weekend...

I'll bring you up to the same level of ignorance I enjoy.

[Gingie]

:)

Guy

BOOYAH! Love it!!

Luckymodels has the C-27 on sale too. But now that I see it does work quite well with a C-130, I may go that route.

[Frank3k]

With all the mods done to the C-130 over its long life, why hasn't something like  tc2324's Boeing CV-230 Herculean been tried? Is it technical or would the VTOL arrangement mean a greatly reduced payload? Even being able to tilt the engines up slightly would shorten takeoffs.

[elmayerle]

With all the mods done to the C-130 over its long life, why hasn't something like  tc2324's Boeing CV-230 Herculean been tried? Is it technical or would the VTOL arrangement mean a greatly reduced payload? Even being able to tilt the engines up slightly would shorten takeoffs.

I'd hazard a guess that engine and transmission design would probably be the main factor since your two tilting nacelles are going to need the power of the four engines the C-130 normally has.  That's either two very large engines (perhaps a pair of A400M engines?) or two engines coupled to one transmission.  In either case, the transmission is going to be a major effort to handle that much power as well as the control inputs that proprotors require; this would not be an insignificant challenge.