Search results for query: Sikorsky tilt

thanks, makes sense at least for one of the reasons, but it is a pity, that they don't make public the all report, about why they choose one over the other, at least Boeing/Sikorsky will have access the army report and to the reasons why they choose Bell craft.

I'm talking S-3 Viking replacement, but deployable on STOVL as well as conventional carriers, not duplicating ASW helicopter capabilities. Something along the lines of the ASW and AEW CL-84 proposals.

The Boeing team has proposed non-X2 solutions for the larger aircraft in the past, including large tilt-rotors or tandems. I don't know what their current mix is, but I doubt they're expecting a one-winner-takes-all segments outcome.

For full disclosure I must again acknowledge that after looking at both technologies for some time, I am in the Tilt-Rotor camp, so evaluate my comments accordingly. Regarding FLRAA/FVL-Medium, there really isn't a need for both designs, even if there was the money for both, which there isn't...

Reality of US politics. Army awards Bell Textron contract worth billions to replace Black Hawk helicopter (KERA-PBS (TX), Dec. 6, Seth Bodine) Bell Textron Inc. beat two of the biggest defense contractors in the industry for a U.S. Army contract to manufacture the replacement of the UH-60...

The problem with any commercialized X2 is that the juice isn't worth the squeeze - even if all the inherent physics problems were magically remedied. The X2 rotor is designed around high power and therefore high SFC to achieve high speeds, which also imparts an absolutely terrible ride (even...

CarterCopter's initial focus was of course a relatively small (3,600 lb) vehicle, and the company's refocus on its PAV designs after its brief excursion into heavylift vehicles is reminiscent of Groen's own transition to the production of kit autogiros when the money ran out. Personally, I...

I just stumbled upon these last posts today, so excuse the tardiness. The way the Army did it, they originally asked for a certain level of performance and capability and were looking to advance rotorcraft technology that might be used on future programs. . Bell proposed a Tilt-Rotor. Since...

NGRC inching forward. https://www.flightglobal.com/helicopters/bidders-line-up-for-ngrc-concept-study-tender/157136.article Some highlights from this piece: Bidders will likely be allowed to pitch multiple solutions in this phase, so we may see teams offering a modern but conventional helo and...

So far the details are not available in public domain... and maybe never will. In regard to future battlefield scenarios I would think range was the decisive factor. And there is no way a compound helicopter could outperform a tilt rotor aircraft in this regard. Or in other words: Bell...

The way I see this, you’re eliminating one tail rotor and replacing it with 2 side rotors... net gain of only one rotor. Same with any folding mechanism. As for shaft length, it’s about the same in both cases as the side rotors are closer to the MGB than the tail rotor... so no weight gain...

If Army goes with high risk and low risk approach for choosing 2 bids. I would see high risk being Karem/Northrop/Raytheon team obviously. I see the raider X as low risk considering it already has a smaller prototype flying and a bigger brother being tested. It has alot of room for unforeseen...

JAZZ, a very interesting complilation, several designs are unknown for me. But I can't understand the difference between support convoy duty and support aircraft. The S-66 was the rival design to Lockheed AH-56, so it role was similar to USAF Skyriders. This is full combat support duty and not...

Bell Helicopter sees new aircraft matching Asia pivot By Andrea Shalal-Esa FORT WORTH, Texas Thu Dec 19, 2013 3:15pm EST A full-sized representation of the Bell Helicopter V-280 Valor sits on display at the 2013 AUSA Annual Meeting and Exposition in Washington D.C in this handout photo...

"Sikorsky head cites highlight in advance of potential sale" Alexander Soule Published 8:02 pm, Friday, March 13, 2015 Source: http://www.stamfordadvocate.com/business/article/Sikorsky-head-cites-highlight-in-advance-of-6133255.php

"Sikorsky, Bell Tout Flying Characteristics Of JMR Rotorcraft Candidates" Replacing U.S. Army medium helicopters is about more than speed by Graham Warwick Oct 20, 2014 Source: http://aviationweek.com/technology/sikorsky-bell-tout-flying-characteristics-jmr-rotorcraft-candidates

Agree with Yasotay. Generally speaking, a Tilt-Rotor is going to be more expensive to acquire than a conventional helicopter of comparable size, although you'll get that back in fuel and overall maintenance. If all you want/need is what a conventional helicopter can do, then it's harder to...

Lots of stuff gets recycled. Look at a number of MDD and Northrop's concepts in the early '90s. You'll see features that clearly came from the F-23. You can trace the ancestry of a lot of Bell's civil helo shapes to the JetRanger. Regarding the V-tail, that's a function of the...

How so? It was my understanding that the X-wing rotor just used compressor bleed air, not the exhaust stream. I'm not convinced that compressor bleed air would be any hotter than the friction of the blades through the air.

Newer technology I suspect. While there is a significant amount of information on tilt rotors out there including operational deployment, the coaxial rotor compound helicopter has relatively little data to go on. Especially when you significantly size up the aircraft. There are more than...