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“I know that some of the requirements are the same that they were then and some of them I scratch my head on,” he says. “But they seem very reluctant to re-engage the process to try and redefine what those requirements are and justify them at this point...All I can say is, I’m not gonna throw a rock at them, they have a set of requirements they passionately believe in and they think they require all that stuff.”
originally posted by: Zaphod58
a reply to: dragonridr
And there are very few helicopters that operate well there. They can op erate there, but they don't handle the altitude well. Many of them are pushing their limits to operate at that altitude.
The UH-1N has a fifteen-seat configuration, with one pilot and fourteen passengers. In cargo configuration it has an internal capacity of 220 ft³ (6.23 m³). An external load of up to 5,000 lb (2,268 kg) can be carried. The UH-1N was later developed into the civil Bell 212.
Maximum speed: 120 knots (135 mph, 220 km/h) Cruise speed: 110 knots (126 mph, 207.3 km/h) Range: 248 nmi (286 mi, 460 km) Service ceiling: 17,300 ft (5,273 m) Rate of climb: 1,755 ft/min (8.9 m/s) Power/mass: hp/lb (W/kg)
The AW139M is classified as a mid-size helicopter, and can be used for the following missions: Firefighting, Medical, Military, and Police. It can transport up to 15 passengers, just about the same as competitors of a similar size. The AW139M can fly as far as 573 nautical miles on a tank of fuel, a range that's 148 mi farther than other similarly sized rotorcraft. Its maximum altitude ceiling (HOGE) is 8130 feet, which is 470ft lower than average for its class. Top speed comes in at 165 knots, or 14% faster than the average mid-size helicopter.
The NH90 is classified as a mid-size helicopter, and can be used for the following missions: Military. It can transport up to 20 passengers, 6 more than competitors of a similar size. The NH90 can fly as far as 530 nautical miles on a tank of fuel, a range that's 105 mi farther than other similarly sized rotorcraft. Its maximum altitude ceiling (HOGE) is 8530 feet, which is roughly average for its class. Top speed comes in at 162 knots, or 12% faster than the average mid-size helicopter.
The MH-139 is based on the Leonardo Helicopters AW139, of which there are 900 in service with more than 250 governments and private companies. Designed for day and night operations in a variety of climates, the AW139 is powered by two Pratt & Whitney Canada PT6 engines with full digital electronic engine control (FADEC) that give the aircraft an airspeed of 165 kt (190 mph, 306 km/h). Inside, there's a glass cockpit with advanced avionics and a four-axis digital autopilot with auto-hover.
Boeing Co. on Thursday announced it will offer an MH-139 helicopter variant, based on Leonardo-Finmeccanica’s AgustaWestland AW139, for the Air Force’s UH-1N Huey helicopter replacement program. “This Northeast Philadelphia-built aircraft is sized to meet U.S. Air Force requirements and offers more than $1 billion in acquisition and lifecycle expense savings over 30 years when compared to competitor aircraft,” David Koopersmith, vice president and general manager of Boeing Vertical Lift, said in a release. The company unveiled its concept at the Air Force Association’s Air Warfare Symposium in Orlando, Florida. The multi-role aircraft is a 15-seat, medium-sized twin-engined helicopter. More than 250 of the aircraft have been assembled and delivered from the Philadelphia plant, Boeing said. “The fact that the AW139 is being built today on an active production line will speed it to meet the time-critical demand following the competition,” said retired Air Force Lt. Gen. Judy Fedder, director of global sales and marketing for Boeing Integrated Logistics.