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 Betreff des Beitrags: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 30. Sep 2011, 11:11 
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Die US Army hat einen 18-Monate Entwicklungsauftrag vergeben. Das Joint Multi Role (JMR) Programm soll 2017 zwei flugfähige Bewerber für die Black Hawk Nachfolge präsentieren. Einsatzbereitschaft: 2025-30
Eingeladen wurden:

Bell Boeing: Tiltrotor-Konzept
Boeing: mehrere Varianten denkbar
Sikorsky: X2 Konzept (Hochgeschwindigkeit, Coaxial-Rotor und Push-Rotor)
AVX (sehr beachtlich!): Coaxial-Rotor und Impeller ähnlich den vorgeschlagenen Bell OH-58D Kiowa Warrior Upgrade für das Armed Aerial Scout Programm.
Eurocopter oder Agusta-Westland sind nicht am Start und dürften daher auch wenig Chancen haben, in diesen lukrativen Prozess einzusteigen.

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Sikorsky X2 Konzept - hier als S-97 Raider
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AVX Transporthubschrauber

http://www.aviationweek.com/aw/generic/ ... 20Contract


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 30. Sep 2011, 12:11 

Registriert: 09. Sep 2008, 22:29
Beiträge: 20724
Zitat:
Objective vehicle attributes

    –Common core architecture that is scalable
    –Integrated ASE
    –Speed 170-200 kts
    –Range 424 km (radius)
    –Performance @ 6k/95
    –Shipboard Compatible
    –Fuel Efficient
    –Survivable
    –Supportable
    –Optionally Manned
    –CommonalityRangePayloadFuel


    Quelle: Advance Planning Briefings for Industry - Joint Multi Role (Quelle ist die Website des Redstone Arsenal, die leider ein problematisches Zertifikat hat.)

Dieser Hubschrauber wird sicher auch für die Nachfolge der österreichischen "Black Hawk" und AB-212 Relevanz haben, die ca. um 2035 / 2040 anstehen sollte.


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 04. Okt 2011, 16:40 

Registriert: 09. Sep 2008, 22:29
Beiträge: 20724
Da mit diesem Helikopter auch der AH-64 "Apache" ersetzt werden soll, scheidet ein Tiltrotor-Konzept auf jeden Fall aus. Man will wohl wieder eine "Joint Strike Fighter"-ähnliche "eierlegende Wollmilchsau". Ich bin schon gespannt auf zu erwartende Kostenüberschreitungen ....

US Army considers Texas start-up’s design for Black Hawk, Apache replacement

Zitat:
A Texas-based start-up will challenge three rotorcraft industry giants for a possible US Army contract to replace the Sikorsky UH-60 Black Hawk and Boeing AH-64 Apache with a single, high-speed aircraft


Zitat:
For the JMR requirement, the army wants an aircraft with a minimum speed of 170kt that can carry a 2,720kg (6,000lb) internal load.

AVX's concept would require two engines generating 4,000shp (2,984kW) each, said Troy Gaffey, president and chief engineer. The proposal depends on the development of the 3,000shp advanced affordable turbine engine (AATE), Gaffey said. He added that the AATE, which is in competition between General Electric and a Honeywell/Pratt & Whitney team, should be scalable to 4,000shp.




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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 31. Mär 2012, 20:30 

Registriert: 09. Sep 2008, 22:29
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U.S. Army Charts Path To New Rotorcraft

Zitat:
The Army wants to field a medium-utility JMR by 2030.

The JMR TD will be divided into two parts—Phase 1 for the air vehicle and Phase 2 for its mission system, which lags by two years in recognition that electronics advance faster than airframes, rotors, engines and drive systems. Both phases are to be completed by the end of fiscal 2019, when the Army plans to be in position to launch the engineering and manufacturing development program for a next-generation rotorcraft.


Zitat:
The Army has committed funds for a single air vehicle, with $188 million budgeted in fiscal 2012-16, but AATD hopes funding from other services and cost-sharing by industry will enable it to afford two competing aircraft. “I think we can find a way to do two,” Chase says.

Of the money budgeted, $75 million is so-called BA4 dollars, usually provided by programs to fund prototypes. By establishing this funding line, the Army hopes to bridge the “valley of death” that often prevents technology transitioning from S&T to programs, Chase says.

Whether the funding is sufficient is another issue. “It’s not clear how much technology will be demonstrated,” says Mike Hirschberg, executive director of the American Helicopter Society International. “It’s easy to do a demo with a certain amount of money. It’s easy to demonstrate advanced technology with sufficient money. You can’t demonstrate a lot of next-generation technology with an inadequate amount of funds.”


9. Dezember 2011

Army developing next-generation helicopter

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Bild

Zitat:
VISION OF CAPABILITIES

Building a helicopter able to sustain speeds in excess of 170 knots, achieve an overall combat range greater than 800 kilometers (combat radius of 424 kilometers) and hover with a full combat load under high/hot conditions (altitudes of 6,000 feet and 95 degrees F) are among the many capabilities sought after for the JMR.

Plans for the next-generation aircraft also include having a degree of autonomous flight capability or being "optionally manned," successful weapons integration and compatibility, a core common architecture in terms of next-generation electronics, sensors and on-board avionics, manned-unmanned teaming ability and shipboard compatibility.


Zitat:
The JMR program, which seeks to begin designing several "demonstrator" aircraft by 2013 and conduct a first flight in 2017 as a series of first steps toward developing a next-generation fleet of helicopters, is a subset of the Pentagon's Joint Future Vertical Lift effort squarely aimed at exploring emerging technologies and best identifying the realm of the possible with respect to future aircraft and helicopter capabilities.


Zitat:
JMR CONFIGURATIONS

Planned mission sets for the JMR include cargo, utility, armed scout, attack, humanitarian assistance, MEDEVAC, anti-submarine warfare, anti-surface warfare, land/sea search and rescue, special warfare support, vertical replenishment, airborne mine countermeasures, and others, according a Nov. 9 Joint Multi-Role Technology Demonstrator Phase 2 Mission Systems Demonstration Request for Information, or RFI.

The over-arching JFVL efforts span a range of four classes of future aircraft, ranging from light helicopters to medium and heavy-lift variants and an ultra-class category designed to build a new fleet of super-heavy-lift aircraft. The ultra-class aircraft will be designed to lift, transport and maneuver large vehicles around the battlefield such as Strykers and mine-resistant, ambush-protected vehicles known as MRAPs. The ultra-class variant, described as a C-130 type of transport aircraft, is part of an Air Force led, Army-Air Force collaborative S&T effort called Joint Future Theater Lift, or JFTL.


Zitat:
TWO PHASES

The JMR Technology Demonstrator effort is broken down into two distinct, measurable phases; phase one includes an 18-month Configuration and Trades Analysis, or CT&A, designed to explore technological possibilities for a new platform or Air Vehicle. Phase one also includes the design, fabrication and test of several demonstrator aircraft, Chase explained.

Phase two will be focused on trade studies and the development of mission systems. The idea is to build several "Technology Demonstrator" helicopters as a method of refining and informing the requirements for the new aircraft, requirements which will likely evolve and change as technologies mature and emerge over time, officials said.

The JFVL effort, which includes both the JMR acquisition program as well as the JMR Technology Demonstrator effort, is designed to incorporate findings from a series of OSD-led studies and analyses on Future Vertical Lift directed by the secretary of Defense in 2009, including a Rotorcraft Survivability Study, a capabilities-based assessment, an S&T plan and a strategic plan.


Zitat:
While the JMR program includes the exploration of light, medium and heavy-lift helicopter variants, the effort will initially focus on medium-lift options.

The Army' s Aviation Applied Technology Directorate, or AATD, at Fort Eustis, Va., which leads the execution of the tech-demo effort on behalf of AMRDEC, awarded 18-month Technology Investment Agreements to Boeing, a Bell-Boeing team, Sikorsky and a 15-month contract to the AVX Corporation. The first phase of the process will be for the government and its industry partners to conduct analytical studies and trade assessments designed to articulate the scope of what might be technically possible. These initial findings will help inform the specifications to describe the rotorcraft demonstrator vehicles which will then be built.


Zitat:
PHASE I - Air Vehicle

The goal of the JMR S&T program is to leverage the S&T needed to successfully influence the development of a program of record, Weller explained. The program plans to have an approved initial capabilities document by April 2013.

The areas of S&T focus on the JMR Technology Demonstrator program span a wide spectrum of emerging technologies from composite materials to electronics and various rotor configurations designed to increase speed without compromising hover ability, Weller said.

For example, one of several existing "compound helicopter" technologies under examination is the potential use of a coaxial rotor system. With this technology, the idea is to place auxiliary propulsion technologies or "thrusting" devices at the back end of the aircraft to provide extra speed, Weller explained.

Another example of these so-called configurations is to build a helicopter which uses two turbo-shaft engines and two small fixed wings on each side of the aircraft fitted with a pusher-propeller for extra propulsion.

TILT-ROTOR TECHNOLOGY

Also under examination is the potential use of tilt-rotor aircraft technology such as that currently used for the V-22 Osprey; with this design, the aircraft can reach high speeds in airplane mode and then maintain its ability to hover successfully in helicopter mode.

"When you develop capability like these, however, you give up some hover ability. A main focus of the research is to look at ways of increasing speed without sacrificing the ability to hover," Weller said. "Part of the Science and technology program is to look at different configurations."

One of the options being taken up through this effort is the exploration of multi-speed transmission capability, a unique configuration designed to increase speed while avoiding the aerodynamic phenomenon of transonic shock, Dinning explained.

"All of the helicopters we develop now are built with a single-speed transmission. We are looking at how we can leverage technology and put in a multi-speed capability," he said.

NEW MATERIALS

In addition, the new Air Vehicle may contain composite materials and or items now in development, Chase explained.

"We are exploring how to get the most efficiency out of the new structure that we can. One way to do that may be by using composite materials," he added.

Increasing Air Vehicle speed can shorten the response time for these extended missions or combat radius, a critical necessity for saving lives through MEDEVAC operations, and getting supplies such as food, water and ammo to forward-positioned forces, Dinning explained.

"Current helicopter systems are designed to operate for about two hours without refueling. Typical cruise speeds of 140 knots limit the range that these aircraft can operate in," Dinning said.

Short of off-loading payload (troops, weapons, cargo) to add extra fuel bladders, extended-range operations must rely on Forward Arming and Refueling Points, or FARPs, where fuel and armaments are prepositioned.

"The Army recognizes the need to reduce the manned footprint of these forward operation positions," Dinning said.

Non-linear, asymmetric or counterinsurgency-type environments, such as the current conflicts in Iraq and Afghanistan, underscore the need to reduce the risks associated with having deployed units travel to potentially hostile prepositioned locations to set up FARPs, he said.

Phase 1 will be followed by a Phase 2 extensive Mission Systems and Aircraft Survivability Equipment, or ASE S&T developmental effort.


P.S.: Pankl Aerospace wird übrigens Teile für die Sikorsky S-97 RAIDER zuliefern.



Zuletzt geändert von theoderich am 21. Okt 2013, 16:25, insgesamt 2-mal geändert.

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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 05. Mär 2013, 07:47 

Registriert: 09. Sep 2008, 22:29
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HELI-EXPO 2013: Bell will pitch third-gen tilt-rotor for JMR/FVL

Zitat:
Bell Helicopter will pitch a third-generation tilt-rotor design for the US Army's Joint Multi-Role/Future Vertical Lift (JMR/FVL) programme, a top company official says.

"We felt we needed to lead on tilt-rotors going forward on the JMR/Future Vertical Lift," says John Garrison, president and chief executive officer of Bell Helicopter, speaking at the Heli-Expo 2013 trade show in Las Vegas, Nevada. "We think that puts us in the best position to exploit the capabilities of the tilt-rotor in the JMR/FVL arena."

Garrison says that his company's proposed third-generation tilt-rotor design will be unveiled in April at the Army Aviation Association of America conference in Dallas, Texas. He adds that the company is attracting high-powered design talent for the effort.

While a risk-sharing partner might prove to be beneficial, Bell does not need outside financial help to develop its new tilt-rotor design, Garrison says. Nonetheless, the Bell is currently looking at potential partners. Garrison cautions, however, any partner would have to contribute both technically and financially.


Zitat:
But Garrison says that the army believes that tilt-rotors are the most "operationally effective" high-speed rotorcraft concept. He added that he expects that the JMR/FVL programme will ultimately come down to a battle between a tilt-rotor design and a pusher-propeller design like the X-2.

Garrison notes that the Boeing teaming up with Sikorsky has no bearing on their collaboration on the V-22 programme.


Etwa weil man mit dem Tiltrotor V-22 "Osprey" so wahnsinnig gute Erfahrungen gemacht hat? Der JMR-Wettbewerb wird sicher ein Heimspiel für Sikorsky/Boeing.


21. Jänner 2013

IN FOCUS: Mixed reaction over US plans for new prototype attack helicopter

Zitat:
Speaking at a Credit Suisse conference in New York in November, undersecretary of defense for acquisition, technology and logistics Frank Kendall said the helicopters sector was one area he is concerned about "preserving our capacity" for new designs. "I sent a letter out to the services recently on starting a prototyping programme that DARPA [Defense Advanced Projects Research Agency] will lead that I'd like the services to be involved in."

The prototype attack-helicopter development programme could get under way "a year or two down the road", says Kendall. However, the Pentagon first plans to undertake a concept-definition phase, after which it will proceed with an "X-plane" programme.

The idea, Kendall says, is to preserve the USA's engineering design talents which, if allowed to atrophy, would be extremely difficult to rebuild.


Zitat:
"I think something like this is important in the USA if we want to sustain a rotary-wing technical base," says Paul Kaminski, head of the Pentagon's Defense Science Board, who formerly held Kendall's position. "We haven't done a lot of fundamental work in new designs in rotary-wing aircraft for some time now."

Dan Goure, an analyst at the Lexington Institute, notes that "with the exception of the Sikorsky S-97 Raider, there really hasn't been anything new in helicopters in a very, very long time".


Zitat:
Jacques Gansler, a former Pentagon procurement chief, and Roger Lipitz, chair in public policy at the University of Maryland, make the argument that "it would be desirable to maintain our leadership in that helicopter field. Therefore, investments in that area would be important."

The DoD used to partner NASA to develop such technologies, but that effort has largely ended. "Which makes something like this even more important," notes Kaminski.

One of the biggest advantages to building prototypes is it affords policymakers options to put any useful designs that emerge into production at a later date, adds Kaminski. That is especially true if a production effort is not financially feasible in the imminent future.

However, the importance of competition is stressed by Gansler. Ideally, multiple contractors should submit proposals and at least two different prototype designs should be built to broaden the industrial base and force competition, he says.

Developing prototypes could afford the DoD a chance to radically advance technology. "One of the things we might consider doing is looking at some less aggressive and some more aggressive paths and maybe we'll be fortunate and see both turn out," Kaminski says. "In that case, we might have a hard decision on what to do. Maybe we won't be successful in either, in which case we might see the industry decline some. Or we may be successful in one of the two."

Fiduciary discipline must be among the critical drivers for any prototype programme the DoD embarks upon. "A key piece of the R&D [research and development] effort for the next-generation helicopter is affordability. Cost will be a principal design consideration," says Gansler.


Zitat:
But transitioning a design from a prototype to a production model tends to be expensive. "Where the expense comes is in transitioning to the scale of an engineering and manufacturing development programme and into production," Kaminski says.

Another problem building prototypes cannot address are problems below the level of the big prime contractors, Gansler says. Often, second- and third-tier component manufacturers, which often supply multiple primes, are much more vulnerable during a downturn than larger companies.

Richard Aboulafia, an analyst at the Teal Group, suggests that instead of building prototypes of a new airframe, it might be wiser to invest in the design and development of subsystems. Prototype airframes have historically tended to be single-purpose technology demonstrators, he notes.

"I'd say, let's look at bang for buck," Aboulafia says. "What if we were to take this airframe development concept and divert the cash to engines, avionics, weapons and sensors. Would we not be better serving the war­fighters and taxpayer?"


Zitat:
Kaminski says he is an advocate of "aggressive prototypes" that can potentially offer revolutionary capabilities, particularly in this sort of difficult budget environment.

"It's not a bad time to take some risks expecting that many of the things won't turn out," he says. "But you might see some very interesting game-changing designs come out of some of these activities."

Potentially, such efforts could yield breakthroughs in range, payload and speed. It could also yield benefits in avionics and stealth. But perhaps more importantly, at policy level, it gives senior decision-makers a menu of options to choose from once the fiscal climate is more favourable.

"The prototyping programmes aren't that expensive in the big scheme of things," notes Kaminski. However, Gansler cautions that the DoD should not build prototypes simply for the sake of building them. "What good is that? You can't use it," he says. "Even If you have demonstrated it in terms of technology, if you put it on the shelf until you need it, you still have to then produce it in volume affordably."



Zuletzt geändert von theoderich am 20. Aug 2013, 12:02, insgesamt 1-mal geändert.

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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 05. Mär 2013, 15:41 
Mich würd es wundern, wenn der zukünftige Hubschrauber vor 2035 in Serie gehen würde. Man braucht sich doch nur die derzeitigen "Multi-Role-Projekte" ansehen. Da gibt es Probleme ohne Ende und damit verbunden jahrelange Verzögerungen.

Von der Qualität auch mal ganz zu schweigen.


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 08. Mär 2013, 19:42 

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EADS (ie Eurocopter) Bids for Army's JMR

Bild

Zitat:
EADS North America confirms it has submitted a bid to build one of two advanced-rotorcraft technology demonstrators planned under the the US Army's Joint Multi Role (JMR) program - putting its foot on the first rung of a ladder that could lead to replacing all of the Army's UH-60 Black Hawks and AH-64 Apaches beginning in the mid-2030s.

EADS is not saying what configuration it has proposed for JMR, but the Army's Aviation Applied Technology Directorate has called for a cruise speed of 230kt - 50% faster that a conventional helicopter - so it is likely to be based on Eurocopter's X3 hybrid helicopter technology demonstrator, which has reached 232kt in flight tests.


Zitat:
The JMR technology demonstrators are to fly in 2017 as a precursor to the planned Future Vertical Lift (FVL) medium utility program to develop a replacement for the UH-60 to be fielded from 2035.

Boeing and Sikorsky have already teamed to offer a JMR demonstrator based on Sikorsky's X2 high-speed coaxial-rotor compound helicopter configuration, which has exceeded 260kt in flight tests. Bell Helicopter has proposed a tiltrotor and AVX Aircraft has offered a coaxial-rotor, dual ducted-fan design.

Talking to Boeing and Sikorsky a week or so ago, Sikorsky's military head Samir Mehta asked if we were surprised when the companies in January announced their long-term teaming on JMR and FVL. I said I was more surprised that the Army would allow its two major helicopter suppliers to team for its biggest-ever rotorcraft program. What about competition?

Mehta replied that he expected Eurocopter, through EADS North America, to provide the competition the Army needs. And he has been proved right. But building a technology demonstrator for the US Army could be a much bigger step for EADS than modifying the commercial EC145 into the light-utility UH-72, and now the armed-scout AAS-72.

And, before you all say the Army would never buy a troop-carrying helicopter with propellers whirling right next to the cabin doors, here is a US patent application from 2010 that shows Eurocopter has some other ideas on how a X3-style compound helicopter could be configured:


Bild


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 19. Mär 2013, 00:44 

Registriert: 09. Sep 2008, 22:29
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Sieht das schräg aus!

Bild

Bild


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 19. Mär 2013, 09:00 

Registriert: 12. Mai 2011, 11:05
Beiträge: 3392
Bin ich der Einzige dem das Ganze System etwas suspekt ist?

Will man ab 2035 wirklich weg vom dedizierten Kampfhelicopter und hin zu einer dicken grossen westlichen Hummel ähnlich einer MI-35 HIND mit Truppentransportkapazität?

Dann bin ich auf das Schutzniveau und Gesamtgewicht gespannt, die neuen Turbinen für MH-60 und AH-64E die es laut Blog erst ab 2020 gibt und ohne denen die beiden Demonstratoren auskommen müssen, werden dann ja wohl dringend gebraucht werden.

Das wird spannend.


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 19. Mär 2013, 09:27 

Registriert: 20. Apr 2010, 13:10
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Wobei mir die Boingdarstellung noch am Besten gefällt. Relativ kurz, kleiner Rotordurchmesser und keine Rotoren im Türbereich.


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 19. Mär 2013, 09:57 

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Dr4ven hat geschrieben:
Bin ich der Einzige dem das Ganze System etwas suspekt ist?

Will man ab 2035 wirklich weg vom dedizierten Kampfhelicopter und hin zu einer dicken grossen westlichen Hummel ähnlich einer MI-35 HIND mit Truppentransportkapazität?


Wenn ich es richtig sehe, soll der Nachfolger für OH-58D und AH-64D etwa so aussehen wie das Mock-up der S-97 Raider und das Nachfolgemuster für den UH-60 eben wie die zuletzt von mir gepostete Grafik. Aber da wird sich sicher noch viel ändern, denn dieses Programm ist momentan ungefähr an dem Punkt angelangt, wo die US Air Force mit ASTOVL Anfang der 80er-Jahre war.


Ich bin von diesem möglichen Mi-35-ähnlichen Kampfhubschrauber auch nicht hundertprozentig überzeugt. Als Nachfolger der Oh-58D sicher ganz passabel, aber als Ersatz für den AH-64D?

Bild

Man erinnere sich an den "Comanche", der vor zehn Jahren gestrichen worden ist:

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      Comanche Helicopter Makes First Flight (4. Jänner 1996)



      Comanche Power System Test Bed Lights Off (7. August 1995)



      First Comanche Helicopter Prototype Unveiled (25. Mai 1995)

      Zitat:
      The Army awarded the Comanche contract to the Boeing Sikorsky team in April 1991. Since that time, the program has undergone a number of changes in response to modifications in funding. The current contract calls for the first prototype to fly in November 1995. A second prototype is scheduled to begin test-flying the Comanche reconnaissance mission equipment package in September 1998.

      Six evaluation aircraft will be delivered in 2001. The Army will use those helicopters to exhaustively field-test the Comanche's design and performance. Production should begin in 2005, with the first complete Comanche unit fielded in 2006.


Hmmwv hat geschrieben:
Wobei mir die Boingdarstellung noch am Besten gefällt. Relativ kurz, kleiner Rotordurchmesser und keine Rotoren im Türbereich.


Die Grafiken von Boeing und Sikorsky zeigen ein und denselben Helikopter - es gibt nur einen Unterschied in der Perspektive und der Inszenierung.


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 24. Mär 2013, 20:20 

Registriert: 12. Mai 2011, 11:05
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theoderich hat geschrieben:
Wenn ich es richtig sehe, soll der Nachfolger für OH-58D und AH-64D etwa so aussehen wie das Mock-up der S-97 Raider und das Nachfolgemuster für den UH-60 eben wie die zuletzt von mir gepostete Grafik.


Der Raider wäre der OH-58D Ersatz und eher dieselbe Gewichtsklasse,ja, aber AH-64D/E und UH-60 werden mit 1 (!) Modell ersetzt, so stehts im Eingangspost...deswegen meine Skepsis.

Der Raider könnte dann sowieso auch Aufgaben des AH-64 übernehmen.


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 25. Mär 2013, 01:04 

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Dr4ven hat geschrieben:
theoderich hat geschrieben:
Wenn ich es richtig sehe, soll der Nachfolger für OH-58D und AH-64D etwa so aussehen wie das Mock-up der S-97 Raider und das Nachfolgemuster für den UH-60 eben wie die zuletzt von mir gepostete Grafik.


Der Raider wäre der OH-58D Ersatz und eher dieselbe Gewichtsklasse,ja, aber AH-64D/E und UH-60 werden mit 1 (!) Modell ersetzt, so stehts im Eingangspost...deswegen meine Skepsis.

Der Raider könnte dann sowieso auch Aufgaben des AH-64 übernehmen.


Ich bin nochmals die wenigen öffentlich verfügbaren Dokumente des US-Verteidigungsministeriums (u.a. von der Website des Defense Technical Information Center) bezüglich "Joint Multi Role" durchgegangen und bin zu dem Schluss gekommen, dass man dort scheinbar auch noch keine wirklich klare Vorstellung davon hat, welche Muster mit diesem Programm nun ersetzt werden sollen. Am 7. Dezember 2012 wurden zwar gewisse Richtwerte (u.a. VTOL, Geschwindigkeit > 170 kts) für die Leistungsanforderungen im Broad Agency Announcement No. W911W6-12-R-0021 veröffentlicht, was aber noch keine Rückschlüsse darauf ziehen ließ, welche Hubschraubertypen nun wirklich ersetzt werden sollen. In der unten zitierten Präsentation sind UH-60, AH-64 und OH-58 aufgelistet, aber diese Angaben sind auch schon fast sechs Jahre alt.

Future Directions in Tactical Vertical Lift (AMRDEC, 29. April 2010)



Modernizing the Army’s Rotary-Wing Aviation Fleet (Congressional Budget Office, November 2007)

Zitat:
Also over the next decade, the OH-58C/D Kiowa reconnaissance helicopters would be replaced with a mix of Lakotas and the new Armed Reconnaissance Helicopters (ARHs); upgrades of AH-64A Apache attack helicopters to the D-model Longbow configuration would be completed; and a further upgrade of Longbow Apaches to the Longbow Apache Block III (AB3) configuration would begin around 2011. By 2020, the Army plans to begin developing a new attack aircraft that currently is known as the Joint Multi-Role rotorcraft (JMR).


Zitat:
The Joint Multi-Role quantity would replace, one-for-one, all Longbow Apache Block III, Armed Reconnaissance Helicopters, and UH-60M helicopters. The Joint Heavy Lift quantity could equip 15 aviation battalions (one for each planned Future Combat Systems brigade) including training and spare aircraft. Data reflect Army purchases only.



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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 25. Mär 2013, 09:21 

Registriert: 12. Mai 2011, 11:05
Beiträge: 3392
Danke fürs eruieren, ich denke wir werden bis Ende des Jahres sehen was sie mit den OH-58D Ersatz wirklich machen, diese Entscheidung wurde ja schon mehrmals vertagt.
Ich hab den Eindruck dass das ein separates Programm wird weil es durch den früher notwendigen Ersatz der Kiowas nach 22 Jahren (1991-2013) Vollzeiteinsatz im Irak und Afghanistan wohl zeitsensitiver ist.


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 Betreff des Beitrags: Re: OT: Nachfolger UH-60 Black Hawk
BeitragVerfasst: 11. Apr 2013, 01:14 

Registriert: 09. Sep 2008, 22:29
Beiträge: 20724
PICTURES: Bell unveils V-280 Valor

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Zitat:
Bell Helicopter is unveiling a new third-generation tiltrotor aircraft concept called the V-280 Valor, which it is pitching for the US Army's Joint Multi-Role (JMR)/Future Vertical Lift (FVL) programme


Zitat:
Called the V-280, the Bell concept features a V-tail, a large cell carbon core wing and a composite fuselage. Unlike the older V-22 design, the engines do not move, only the rotor-system tilts, Bell says. Coupled with a fly-by-wire system, the aircraft should have excellent high and low-speed handling qualities, the company says.

The V-280 will be able to cruise efficiently at 280kt carrying 11 passengers comfortably with a mission radius of over 250nm (463km).


Der Rumpf erinnert mich stark an die Dornier Do 228:

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