Bell 412 from the Huey family

HELIHoMe history 📜 😉 : Today, we tell you about American, utility helicopter, from the Huey family... Of course this is Bell 412! Bell 412 is a twin-engine helicopter of the Huey family manufactured by Bell Helicopter. It is a development of the Bell 212, with the major difference being the composite four-blade main rotor. 📝 Development began in the late 1970s with two Bell 212s being converted into 412 prototypes. An advanced four-blade main rotor with a smaller diameter replaced the 212's two-blade rotor. A Bell 412 prototype first flew in August 1979. The initial model was certified in January 1981 with deliveries commencing in the same month. 📰 The 412 model was followed by the 412SP (Special Performance) version featuring larger fuel capacity, higher takeoff weight and optional seating arrangements. In 1991, the 412HP (High Performance) variant with improved transmission replaced the SP version in production. The current production version, 412EP (Enhanced Performance), is equipped with a dual digital automatic flight control system. In 2013 Bell introduced the 412EPIwhich includes an electronic engine control (FADEC) for a PT6T-9 engine upgrade, and a glass cockpit display system similar to the Bell model 429. 📚 Also featured is a Garmin touchscreen navigation system, and the BLR Strake and Fast Fin upgrades for improved hover performance. Over 700 Model 412s (including 260 by AgustaWestland) have been built. 📖 Bell 412 Standard Model with P&WC PT6T-3B Bell 412SP Special Performance version with P&WC PT6T-3BF engines Bell 412HP High performance version with P&WC PT6T-3BG or -3D engines Bell 412EP Enhanced performance version with P&WC PT6T-3DF engines Bell 412EPI Glass cockpit version with P&WC PT6T-9 electronic controlled engines Bell 412CF (CH-146 Griffon) 100 custom-built utility transport helicopters for the Canadian Forces, based on 412EP and designated by Bell as 412CF Bell Griffin HT1 Advanced training helicopter based on the Bell 412EP, operated by the Royal Air Force (RAF) since 1997 as an advanced flying trainer. Operated by the Defence Helicopter Flying School at RAF Shawbury and the Search and Rescue Training Unit at RAF Valley. Bell Griffin HAR2 Search and Rescue helicopter based on the Bell 412EP, operated by No. 84 Squadron RAF since 2003 at RAF Akrotiri in Cyprus. Agusta-Bell AB 412 Civil utility transport version, built under license in Italy by Agusta. Agusta-Bell AB 412EP Italian-built version of the Bell 412EP. Agusta-Bell AB 412 Grifone Military utility transport version, built under licence in Italy by Agusta. Agusta-Bell AB 412 CRESO Italian-built version, fitted with a ground surveillance radar. NBell 412 IPTN's licensed product of Bell 412 Panha 412EP Iranian domestically reverse-engineered version of AB 412EP, which has been in use with Iranian military. 4 of these variant were introduced at October 8, 2016 by Red Crescent of Iran. 🚁 General characteristics * Crew: one-two pilots * Capacity: up to 13 passengers, maximum external load of almost 6,614 lb (3,000 kg) * Length: 56 ft 1 in (17.1 m) * Rotor diameter: 46 ft (14.0 m) * Height: 15 ft (4.6 m) * Disc area: 1,662 ft² (154.4 m²) * Empty weight: 6,789 lb (3,079 kg) * Max. takeoff weight: 11,900 lb (5,397 kg) * Fuselage length: 43 ft (13.1 m) * Powerplant: 1 × Pratt & Whitney Canada PT6T-3D or PT6T-3DF Twin-Pacturboshafts, 1,250 shp (932 kW), 900 shp (671 kW) for each power section Performance * Maximum speed: 140 knots (161 mph, 259 km/h) * Cruise speed: 122 knots (140 mph, 226 km/h) * Range: 609 mi (up to 980km) * Service ceiling: 20,000 ft (6,096 m) * Rate of climb: 1,350 ft/min (6.86 m/s) * Power/mass: 0.2663 hp/lb (437 W/kg) * Goodnight, flight, landing and friday 🌙 😜 * #Helihome #helihomehelihistory #helicopter #bellhelicopters #bell #bell412 #helihistory #history #goodnight 🚁 💨  

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