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13 février 2012 1 13 /02 /février /2012 12:55
Army Rangers Test New Software-Defined Radio

Feb 12, 2012 By Kris Osborn Source : US Army / ASDNews

 

The U.S. Army's 75th Ranger Regiment in Afghanistan recently completed an operational assessment of the software-programmable Joint Tactical Radio Systems, or JTRS Rifleman Radio. The assessment highlighted the radio's ability to share combat-relevant information, voice and data across small units in real time.

 

"We have just entered the era of the networked Soldier," said Col. John Zavarelli, program manager, Joint Program Executive Office, or JPEO JTRS, Handheld Manpack Small. "The individual rifleman now has a game-changing capability."

 

The Operational Assessment marked the first formal combat use of the single-channel, software-defined Rifleman Radio, which uses Soldier Radio Waveform, or SRW, a high bandwidth waveform which draws upon a larger part of the available spectrum compared to legacy radios to share information and "network" forces.

 

Rifleman Radio is part of a family of software-programmable JTRS radios, which make use of NSA-certified encryption to safeguard and transmit information. The radios are built to send packets of data, voice, video and images via multiple waveforms between static command centers, vehicles on-the-move and even dismounted individual Soldiers on patrol.

 

The operational assessment of Rifleman Radio is part of an overall acquisition strategy aimed at rapidly and effectively harnessing Soldier feedback as a vital element of procurement and technology development efforts, said Brig. Gen. Michael Williamson, Joint Program Executive Officer, JTRS.

 

"This is a near perfect example of how early engagement by the warfighter working closely with the PM and the acquisition community can deliver capability smarter and faster," said Williamson. "There was a tremendous amount of work done by the program manager, the Rangers and the acquisition leadership within the DOD and the Army to achieve this milestone."

 

The general said the Rangers spent a lot of time using the radios and "clearly had a significant level of confidence" in the system. Rangers liked the size, weight and power of the Rifleman Radio, which provided a battery life of up to ten hours and increased the units' ability to communicate despite obstacles such as buildings and nearby terrain.

 

The elite Ranger unit, which outfitted multiple platoons with the Rifleman Radio while conducting various tactical missions in Afghanistan, indicated that the systems greatly assisted their unit's ability to exchange key information such as position location information faster, further and more efficiently across the force, Zavarelli said.

 

"Communications were effective and reliable," Zavarelli said. "Team leaders and squad leaders benefitted from the position location information because of the information carried by the SRW waveform."

 

Rifleman Radio and SRW allowed the Ranger units to establish a mobile, ad-hoc network. Using that network, squad leaders, commanders and dismounted infantry shared and viewed mission essential information using small, hand-held, end-user devices with display screens. The devices displayed digital maps that allowed users to view surrounding terrain and to also locate nearby friendly forces, Zavarelli explained.

 

"The Rangers felt the radio was very effective for conducting infantry operations, especially at the small unit level," Zavarelli said. "Rifleman Radio allowed them to execute missions very rapidly because they had an improved awareness of where they were in relation to surrounding troops. Mission Command decisions were achieved faster."

 

Using the software programmable Rifleman Radio and SRW, the Rangers were able to "network " voice, data and information across deploying units in austere environments, without needing to rely upon a "fixed" infrastructure or GPS system to communicate across the unit while on the move.

 

"With the SRW networking waveform all you have to do is get to the next node," Zavarelli said. "The waveform that we were using is critical to bending around corners. Instead of having to push through obstacles you just have to hop to the next node. They were in a situation where the networking function worked well for them."

 

The success of this Rifleman Radio Operational Assessment, which included 125 radios, is expected to inform ongoing JPEO JTRS, Army and U.S. Special Operations Command considerations regarding planned future deployments of the radio. In fact, further development of the JTRS Rifleman Radio is being greatly assisted by feedback from Army Rangers who used the device in theater.

 

Overall, incorporating feedback from the Rangers is consistent with the aims of the Army's ongoing bi-annual Network Integration Evaluations, which are geared toward identifying, integrating and assessing capability, systems and technologies for Soldiers before they are sent to theater, Williamson explained.

 

Placing a premium upon Soldier feedback is a key element of the Army's "agile process" approach to acquisition, which seeks to expedite development and delivery of emerging technologies by evaluating them in tactically-relevant, combat-like scenarios such as the NIE.

 

Ultimately, the Army plans to broadly deploy the JTRS Rifleman Radio across the entire force.

 

(Kris Osborn writes for the assistant secretary of the Army for acquisition, logistics and technology.)

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5 février 2012 7 05 /02 /février /2012 18:35

K-MAX-source-Defensetech.jpg

 

05.02.2012 DEFENSETECH

 

Check this out. We’ve been wondering how the cancellation of the C-27J Joint Cargo Aircraft would impact the Army’s tactical airlift needs. While the Air Force says canning the JCA won’t hurt anyone, it looks like the Army is eying the optionally-manned K-MAX helo to carry realatively small but urgent loads of cargo to remote bases.

Now, the Marines have been experimenting with using the K-MAX for this role in Afghanistan for a while now and the Army is very interested in seeing how that effort goes, according to AvWeek.

And you can bet the Army is keeping a close eye on the program. In August, the service awarded the Lockheed/Kaman team $47 million to continue work on the K-MAX program—testing was done this past fall at Ft. Benning—while wrapping up a larger study on a full range of unmanned cargo options.

The tests will help the service build a formal program of record for an unmanned vertical takeoff and landing (VTOL) capability, a program which we already know Textron/AAI is very interested in. Steve Reid, the company’s senior vp and general manager for unmanned systems says that the company has signed a license agreement with Carter Aviation for a manned, four-person rotary winged asset that Textron is working on turning into an unmanned asset that the company feels “would do the cargo mission that’s being talked about” quite nicely. The Navy has also been busy with other unmanned options, including awarding Northrop Grumman a contract in September to supply twenty-eight MQ-8C Fire Scout VTOL-UAS’s (based on Bell’s 407 helicopter airframe), which the company has touted for its cargo-lugging capabilities.

Very interesting.

 

Via SNAFU

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27 janvier 2012 5 27 /01 /janvier /2012 08:25
USAF, Army Still Squabbling Over C-27J

Photo: C-27J Team

Jan 26, 2012 By Amy Butler - aviation week and space technology

Washington - U.S. military officials are keen on saying they never intend to fight the last war. This is their way of indicating a focus on future conflicts, not on the past.

Apparently, this sentiment does not apply to the interservice skirmishes at the Pentagon. The U.S. Army and Air Force are in the final throes of hashing out an updated agreement on the time-sensitive, direct-support airlift mission, the latest chapter in a years-long saga over how to ship supplies to remote soldiers despite two wars and one stunted buy of Alenia’s C-27J.

The agreement is being made between the chiefs of staff of both services. At issue is how the time-sensitive airlift mission will be handled; this includes the shuttling of small loads of supplies to forward Army units in the field.

The outcome of this cargo rub between the two services could be the first of many such roles-and-missions scrapes. As the Pentagon looks to save money by killing some programs or nixing new ones, the Army and Air Force are also on a crash course regarding the small fleets of tactical, fixed-wing intelligence, surveillance and reconnaissance (ISR) aircraft that each have procured since the start of the Iraq invasion in 2003. In the case of the General Atomics Gray Eagle and Reaper UAS, the developmental Enhanced Medium-Altitude Reconnaissance and Surveillance System (Emarss) and MC-12W Project Liberty aircraft, the services operate very similar systems. In at least one case—with Emarss and the MC-12W—lawmakers have suggested that only one service manage a unified fleet.

As it did with its rotary-wing fleet, the Army is trying to reduce the number of unique airframes in its tactical ISR fleet, says Maj. Gen. Anthony Crutchfield, who heads up the Army Aviation Center of Excellence at Fort Rucker, Ala. “We have a plan to divest of some of the different types of aircraft [and shift to] fewer single airframes.” Without saying which aircraft would be let go, Maj. Gen. Tim Crosby, the Army’s program executive officer for aviation, says the service must “pick those that have been the best bang for the buck.”

Though Crosby notes there is still more work to be done on this, the airlift debate is raging.

“The concern is the logistics part,” says Crutchfield. “What we have to sort out is: ‘Who does that?’”

If this sounds familiar, it is.

The last installment of this tug-of-war took place in 2005 when, during his first major speech to the Air Force Association, the then Chief of Staff of the Air Force, Gen. T. Michael Moseley, announced he wanted a new light cargo aircraft. This was considered odd as the Army was in the midst of setting up its future cargo aircraft program, which was then crafted to replace old C-23 Sherpas and provide more immediate access to commanders for cargo support. At the time, the Army moved ahead with its own program because it felt that it had lackluster support by the Air Force to properly back its needs.

Underscoring the need for direct-support activities were the ongoing wars in Afghanistan and Iraq that called for distributing supplies around small, remote Army outposts. Not only were the Sherpas aging, they lacked pressurized cabins, making it difficult to operate them at high altitude in places such as Afghanistan, says Col. Patrick Tierney, director of the Army’s aviation directorate.

Moseley’s push, along with his similar and later move to take over the Army’s burgeoning UAV force, was seen as an abrupt roles-and-missions grab by the Air Force in the midst of these two wars. In the case of the cargo aircraft role, the USAF won.

At the direction of then-Defense Secretary Robert Gates, in 2009 the Air Force took over authority for the C-27J buy and control of the direct-support mission; service officials said they would combine the use of C-27Js and C-130s to provide cargo lift for the Army (though Army officials had long complained that C-130 support was inefficient owing to underloading of these larger aircraft).

Army officials say that in actuality, the CH-47 Chinook fleet has been unduly burdened in providing timely support because the helicopters are used to shuttle goods from C-130s that land at hubs to the remote locales where soldiers are stationed.

“The major rub to us is responsiveness and not efficiency,” says one Army official who requests anonymity. “When a part is needed at the front line, it flies” and shouldn’t have to wait for enough requests to fill a C-130, the official adds. “We are more about effectiveness than efficiency, and [the Air Force is] more about efficiency than effectiveness.”

So, the questions now are: What is the right number of small cargo-lifters for the direct-support role, and how should the mission be managed?

Though both branches agreed to USAF control of the mission in the 2009 pact, the Army is now insisting that language be added to clarify its needs—specifically emphasizing responsiveness, especially when parts or supplies are called for at forward-operating locations.

USAF Lt. Gen. Herbert Carlisle, deputy chief of staff for operations, acknowledges what he calls a “natural tension” for Army commanders wanting quick support.

The outcome of this deal will directly impact how soldiers at such sites are supported in Afghanistan.

Army officials had long argued that an Army officer must oversee this mission to ensure that its commanders’ needs take priority; the fear is that the USAF will de-emphasize Army unit requirements against the more strategic priorities of regional cargo movements. USAF, however, has long countered that it best knows how to provide airborne logistics support across a fleet of aircraft, including the C-27J, C-130 and C-17.

In 2009, the Air Force conducted a demonstration of the direct-support mission using C-27Js and C-130s in Iraq; this validated the service’s plans for a mix of the two for the mission.

Two C-27Js were deployed to Afghanistan in late July 2011 and quickly started flying operational direct support missions, Gen. Raymond Johns said last fall. The C-27Js are apportioned to Army officials there via Tacon (tactical control), although USAF pilots fly the missions, but the C-130s are not. This means the C-27Js are specifically set aside only for intratheater/direct-support missions under Army authority. Though C-130s are used for this mission, they can be reassigned elsewhere in the area, if needed, Johns said.

Army officials are less than satisfied with the Air Force’s delays in delivering C-27Js to the field. At least six were to be in Afghanistan by now, and why they have not been deployed is the “golden question,” the anonymous Army official said.

One industry official says the Army is “trying to hold the Air Force’s feet to the fire to do what they signed up for” in the 2009 pact.

Alenia has delivered 13 of 21 C-27Js on contract. Originally, Alenia officials projected the U.S. market for the C-27J (including Army/Air Force buys) to support as many as 125 aircraft. Tierney said that in 2005, the Army’s projections set a low risk of handling the mission with a fleet of 78 C-27Js and a moderate risk at 54. When Gates shifted the C-27J program from Army control to the Air Force, the buy shrank to 38 aircraft.

The sharp reduction in procurement numbers prompted Alenia to scrap its plans to open a final assembly facility in Florida; the aircraft are being delivered from a plant in Italy.

Air Force Chief of Staff Gen. Norton Schwartz indicated during a recent testimony to Congress that the C-27J faces termination—possibly before all 38 are delivered—due to fiscal pressure. Service officials contend that maintaining a separate fleet for this mission adds to its spending for unique training and logistics, whereas a C-130-based mission could build off of an existing infrastructure. It is unclear whether the service would keep the C-27Js already delivered or divest of them entirely.

Numerous lawmakers and governors associated with states slated to host C-27J Guard units have written to Schwartz, Defense Secretary Leon Panetta and Deputy Defense Secretary Ashton Carter advocating the program. Some of them argue not only for the national security advantages of the aircraft but also note that without those units, jobs in their districts will be in jeopardy.

Meanwhile, Crutchfield notes that the Army’s C-23 Sherpas still support war operations. Without better direct support from USAF, the Army would have to pay $350 million to keep old C-23s operating, and they would still lack a pressurized cabin, Tierney says. Carlislie expects the updated pact to be signed in days.

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10 octobre 2011 1 10 /10 /octobre /2011 17:25

http://www.army-guide.com/eng/images/ampv1318249287.jpg

 

10.10.2011 KMW - army-guide.com

 

Outstanding levels of tactical, operational and strategic mobility, compelling combat effectiveness and maximum survivability are key requirements imposed on modern military vehicles today – whether they are designed primarily for combat, command and control, mission-specific roles or transport.

 

In contemporary conflicts, where the threat is often asymmetric yet deadly, protecting troops deployed in harm’s way from hostile fire, IED attacks, CBRN agents and even extreme climates conditions has become a top priority for commanders worldwide: around the clock and in every branch of every service.

 

This is reflected in the current procurement plans of the armed forces of many nations, including the Bundeswehr’s GFF/GTF project to develop protected C4I and mission-specific vehicles as well as protected transport capacity.

 

Under this programme, Rheinmetall and Krauss-Maffei Wegmann (KMW) of Germany have joined forces to develop a highly protected family of armoured multipurpose vehicles (AMPV) in the weight class up to 9 ton. Their design and layout take full account of operational experience accumulated by the German armed forces in Afghanistan and elsewhere. Engineered exclusively to meet the needs of the modern military, the AMPV family consists of two separate branches.

 

The AMPV,a prototype version of which is currently undergoing qualification by the German armed forces, is slightly over five metres long, two metres wide and two metres high. Empty, it weighs 7.3 tons and can carry a two-ton payload. The highly protected vehicle cell consists of a self-supporting steel hull with composite armour. Spall liners, reinforced flooring and cellular design offer excellent protection against mines and IEDs; while add-on armour modules supply extra ballistic protection.

 

High mobility likewise contributes to a vehicle’s overall battlefield survivability, and the AMPV design reflects this. The vehicle’s robust chassis, featuring independent wheel suspension, is engineered to withstand maximum punishment. An automatic transmission, permanent all-wheel drive, automatic differential locking management and combat wheels with a central tyre inflation system combine to assure superb mobility even in the toughest terrain.

 

A patrol version of AMPV (with an unprotected load space) will be available, as well as mission module carriers with a safety cell extending all the way back to the rear of the vehicle. For enhanced lethality, a remote control weapon station up to calibre .50 can be mounted on any AMPV vehicle.

 

Extremely compact, all members of the AMPV family largely consist of identical components, especially the logistically relevant parts of the vehicle. Moreover, their essentially uniform, highly ergonomic design makes all AMPV vehicles easy to operate as well as facilitating logistics and training.

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26 mars 2011 6 26 /03 /mars /2011 13:00
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