RQ-4 Global Hawk (Two)
Saturday, April 28, 2012RQ-4 Global Hawk Wallpaper 2 | AirSkyBuster. RQ-4 Global Hawk (Two) RQ-4 Global Hawk, Northrop Grumman, Surveillance UAV, United States Air Force, United States Navy, NASA, Luftwaffe, unmanned aerial vehicle, aircraft, airplane, military, defense, attack, widescreen, wallpaper, photo, picture, image. On 26 January 2012, the Department of Defense announced that the Global Hawk Block 30 program would be terminated. It had been determined that though the RQ-4 Global Hawk (Two) 30 program had been initiated to provide essentially the same capability as the U-2 manned aircraft, but at a much reduced cost to both purchase and operate, these savings had not materialized. Although this was said to be "a significant disappointment," the experience with Global Hawk Block 30 was expected to help other Global Hawk programs like the US Air Force Global Hawk Block 40, NATO's Alliance Ground Surveillance (AGS), and the US Navy's Broad Area Maritime Surveillance (BAMS). The Global Hawk (Tier II+) High-Altitude, Long-Endurance Unmanned Aerial Vehicle (HAE UAV) program was an Advanced Concept Technology Demonstration (ACTD) designed to satisfy the Defense Airborne Reconnaissance Office's (DARO) goal of providing extended reconnaissance capability to the Joint Force commander. Extended reconnaissance was defined by the Director, DARO, Major General Kenneth Israel, as "the ability to supply responsive and sustained data from anywhere within enemy territory, day or night, regardless of weather, as the needs of the warfighter dictate." Two complementary HAE UAV systems were being developed under this program, a conventional design (Tier II Plus) and an Low Observable configuration (Tier III Minus). RQ-4 Global Hawk (Two) UAV was designed to be optimized for high altitude, long range and endurance. It is to be capable of providing 28 hours of endurance while carrying 3,000 pounds of payload and operating at 65,000 feet mean sea level. The integrated sensor suite consists of SAR, EO, and IR sensors. Each of the sensors provides wide area search imagery and a high-resolution spot mode. The radar also has a ground moving target indicator mode. The HAE UAV was expected to be capable of long dwell, broad area coverage, and continuous spot coverage of areas of interest with high resolution sensors. Global Hawk's 24-hour operationally persistent dwell would support persistently viewing and tracking targets like critical mobile targets. The Global Hawk was focused on the radar integrated into the system for all-weather, wide-area and spot capability that could provide high quality imagery with targeting accuracy. The Global Hawk radar and EO/IR payload are carried simultaneously. Radar is capable of multiple modes, SAR strip at one meter, SAR spot at a foot, GMTI mode down to four knots operating all at 20 to 200 kilometers range. The EO/IR payload provided NIIRS 6 or 5.5 depending on whether it's EO or IR. Global Hawk was designed to integrate with the existing tactical airborne reconnaissance architectures for mission planning, data processing, exploitation, and dissemination. It would provide both wide area search radar and EO/IR imagery (40,000 sq nm per mission) at 1m resolution and up to 1900 spot images per mission at 0.3m resolution, and would support targeting accuracy of at least 20m CEP. The Global Hawk UAV system comprises an air vehicle component (with air vehicles, sensor payloads, avionics, and data links), a ground segment (with a launch and recovery element or LRE), a mission control element (MCE) (with embedded ground communications equipment), a support element, and trained personnel. RQ-4 Global Hawk (Two) |
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