Trisha Shetty (Editor)

Brantly 305

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Top speed
  
193 km/h

Length
  
7.44 m

Wingspan
  
8.74 m

First flight
  
January 1964

Brantly 305 wwwbrantlyinfoB305pic014ajpg

The Brantly 305 is an American five-seat light helicopter of the 1960s. It is an enlarged version of the Brantly B-2 which was produced by the Brantly Helicopter Corporation.

Contents

Design and development

The five-seater Model 305 helicopter is based on the smaller two-seat Brantly B-2 that was designed by Newby O. Brantly. The helicopter is powered by a Lycoming IVO-540 flat six piston engine. The enlarged cabin has room for five passengers, two side-by-side forward-facing seats and a bench seat at the rear for three passengers. The Model 305 first flew during January 1964 and FAA type approval was received 29 July 1965. 45 were built during the mid 60's by Brantly and Brantly-Hynes produced an improved version in 1985 of which 4 were built. The Brantly 305 suffered from a ground resonance problems. Hynes developed a more powerful and streamline version in 1993, none were produced.

Specifications

Data from Jane's All The World's Aircraft 1976-77

General characteristics

  • Crew: 2
  • Capacity: 3 passengers
  • Length: 24 ft 5 in (7.44 m)
  • Rotor diameter: 28 ft 8 in (8.74 m)
  • Height: 8 ft 0⅛ in (2.44 m)
  • Disc area: 35.8 sq ft (3.33 m²)
  • Empty weight: 1,800 lb (817 kg)
  • Max. takeoff weight: 2,900 lb (1,315 kg)
  • Powerplant: 1 × Lycoming IVO-540-A1A air-cooled flat-six engine, 305 hp (227.5 kW)

    • Performance

  • Maximum speed: 120 mph (104 knots, 193 km/h) at sea level
  • Cruise speed: 110 mph (96 knots, 177 km/h) (75% power)
  • Range: 220 miles (191 nmi, 354 km)
  • Service ceiling: 12,000 ft (3,3660 m)
  • Rate of climb: 975 ft/min (4.95 m/s)

    • References

    Brantly 305 Wikipedia
    (Text) CC BY-SA