Search results for query: Sikorsky tilt

What if????? Those paintings got me to wondering how it would fly if you installed the tail rotor in a hole (fenestron) cut in one half of the V tail? Think of the tilted tail rotor on Sikorsky CH-53 ... which helps adjust pitch trim. Pitch trim is important on cargo helicopters that frequently...

Boeing Teams with Sikorsky on JMR program http://www.shephardmedia.com/news/rotorhub/sikorsky-boeing-team-us-armys-jmr-td/ Nice way to hedge your bet. As Boeing is also teamed with Bell on Tilt-Rotor there is a good chance now that Boeing will be involved in the Joint Multi-Roll effort...

Actually there are five JHL concepts in three speed bands. The Sikorsky X2 Lifter and Boeing ATRH (Advanced Tandem Rotor Helicopter) at <170 knots The Sikorsky X2 High Speed Lifter in the 170-240 knot band The Bell/Boeing QTR (Quad Tilt Rotor) and Karem Industries OSTR (Optimum Speed Tilt...

Sikorsky will promote the CH-53K as the heavy solution. Boeing will advocate a larger CH-47 (already some NATO work done in this regard). Bell may or may not even consider participation, however if they did, I would expect them to advocate a Tilt Rotor.

No idea. I haven't followed the 609 that closely. This is the first I heard they bought Bell out of the project.

@Scott Kenny - size growth might reduce the number of ships that would be accessible. It would also have to auto-fold per USN shipboard requirement. If "the juice is worth the squeeze" for the expense I would agree larger more productivity to the fleet would be warranted. I think that the...

ooooohhhhhhh thank you that makes so much more sense as far as i know they have never done that thx!

Actually the fold TR concept has been demonstrated with a scaled run in the NASA Langley Wind Tunnel about a decade ago. I would certainly be interested in why you think it not feasible today, although this is not the correct forum for it. Cammnut I want to add my thanks for the great picks...

Yeah, it's an idea that comes up fairly often. Sometimes they talk about changing the whole blade diameter, like Sikorsky's Variable Diameter Tiltrotor concept. https://www.flightglobal.com/news/articles/sikorsky-tries-out-variable-tilt-rotor-22590/

I think the challenge for the Sikorsky co-axial compound will be the height of the rotor mast as well as the folding of rotor blades. Not sure that Bell is going to be much better with folding up a tilt rotor to fit. Going to be interesting to watch for sure.

Funny, I almost started a topic yesterday on the same subject! Here are some additional pics: 1°) Boeing's RIA concept (two images) 2°) Bell's RIA concept = Quad Tilt Rotor (two images) 3°) Sikorsky's RIA concept = Reverse Velocity Rotor (one image) ... plus the basic specs for all three...

Thanks @yasotay. I’m somewhat surprised as this will give Leonardo access to tons of confidential competitive info on the strengths and weaknesses of X2 technology. Which it can then use to sell more tilt rotors and defend/grow its market position. Sounds a little desperate of Sikorsky...

@sferrin - Indeed near the end of the JHL effort Sikorsky elected to go with a tilt rotor solution. @_Del_ - On the face of it I agree with your reasoning regarding landing, but heard many a ancient Huey pilots make the same argument about the "huge" Blackhawk a number of years ago.

I was watching from the bleachers, rather than being personally involved, but my sense of it was that HXM was moving (not very decisively - I don't think I ever saw Sikorsky or Bell ideas for HXM) and then the TR advocates came on board, arguing that with economies of scale, the tilt-rotor would...

@yasotay Do you know the source of that picture? Could it be a SOFTA proposal? BR Michael

Well, after the ABC concept got rejected for vibration reasons (and I assume the person whose pet project was ABC finally retired), there's really only one way to go fast and take off vertically.

According to what I read, JHL is dead and the services are getting together on the Joint Future Theater Lift concept. The VTOL people are, unfortunately, still wedded to the tilt rotor concept. Seems to me that, having been through a development cycle with a tilt rotor, now would be a good time...

Thanks yasotay. I saw your artwork for a possible Sikorsky ABC rotor system version of the V-22 Osprey and a chart on this forum in another thread titled that had various configurations of ABC rotor system aircraft. It led me to believe that Sikorsky's ABC technology had competed against the...

I suspect that it is actually a case of an easier industrial teaming approach. Whereas the BB Tilt-Rotor is a straight 50/50 across the board that leaves both parties with an equal vote/veto (a situation both partners have likely been frustrated with) I see in the press release Sikorsky is...

Yeah thats why the Army are throwing them the lifeline of the change to the Black Hawk program, instead of upgrading UH-60L to UH-60V for the National Guard they will buy clean build UH-60M instead.