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Ingenium Canada Aviation and Space Museum

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Bell CH-135 “Twin Huey”

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Open 9 a.m. to 5 p.m., Thursday to Monday
Address
11 Aviation Parkway, Ottawa, ON
Admission
Browse all Visitor Information for Canada Aviation and Space Museum
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Bell CH-135 “Twin Huey”

Bell CH-135 “Twin Huey”

Highlights:

  • An American military utility helicopter manufactured by Bell Aircraft Corporation / Bell Helicopter Company / Bell Helicopter Textron, starting in 1960
  • Twin-engine version of the single-engine Iroquois, known as the "Huey"
  • Developed through a program funded by the Canadian government, Pratt & Whitney Canada, and Bell Helicopter
  • Fifty operated by Canadian Armed Forces; about six by Canadian Department of Transport
  • Production transferred to Bell Textron Canada Ltd., a world leader in civilian helicopter production in 1988
  • Used worldwide for troop and cargo transport, reconnaissance, medical evacuation, and search-and-rescue work; also used by civilian operators
  • First flight was on October 20, 1956 (XH-40)

Image Gallery:

CASM-30197

CASM-30197

CASM-30195

CASM-30195

CASM-30196

CASM-30196

History:

The aircraft nomenclature system introduced by the U.S. Army during the 1950s included the letters HU, which stood for “helicopter utility”. From this, the famous but unofficial nickname “Huey” was derived for the Bell UH-1 Iroquois as the Twin Huey. An American design, it was developed to Canadian specifications and utilized Canadian-built turbine engines. Entering armed forces service in 1971, it has subsequently been purchased by military and civilian operators worldwide. Production was transferred to Bell Textron Canada Ltd in 1988 and over 900 of the type have been delivered as major exports.

The twin-engine installation is coupled to a combining gearbox and single output shaft that drives a semi-rigid rotor, endowing the helicopter with increased reliability and safety. Used for troop and cargo transport, reconnaissance, medical evacuation and search and rescue work, the Twin Huey was replaced in 1996-97 by the newer Bell CH-146 Griffon helicopter.

Current Location:

Reserve Hangar, Canada Aviation and Space Museum

Provenance:

Transfer from Canadian Forces

This CH-135 was manufactured by Bell Aircraft Corporation, at Forth Worth, Texas in 1971, and was taken on strength by the Canadian Armed Forces that same year. It served throughout Canada until the CH-135s were phased out of service in 1997. One of the highlights of the helicopter's career was its use in search and rescue operations in Goose Bay, Labrador in the mid-1970s.

Of the 50 Twin Hueys operated by the Forces, this example was among those that had flown the most hours.

This helicopter was stored in Trenton, Ontario after it was retired from service, and was donated to the Museum in 1998.

Technical Information:

Rotor diameter 14.7 m (48 ft 2 1/2 in)
Length 12.9 m (42 ft 4 in)
Height 4.5 m (14 ft 10 in)
Weight, Empty 2,720 kg (5,997 lb)
Weight, Gross 5,080 kg (11,200 lb)
Cruising Speed 185 km/h (115 mph)
Max Speed 201 km/h (125 mph)
Rate of Climb 400 m (1,320 ft) /min
Service Ceiling 4,570 m (15,000 ft)
Range 420 km (260 miles)
Power Plant 1,800 hp Pratt & Whitney Canada T400-CP-400 Twin-Pac turboshaft

Bell CH-135 Twin Huey plan

AVIATION
Canada Aviation and Space Museum
Artifact No.
1998.0851
Manufacturer
Bell Aircraft Corporation
Manufacturer Location
United States
Manufacture Date
1971
Acquisition Date
19998
Registration Number
135114
  • View all the collection highlights at the Canada Aviation and Space Museum
  • View other collection highlights related to Aviation

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About Canada Aviation and Space Museum

Canada Aviation and Space Museum
Located on a former military air base just five kilometers from the Prime Minister’s residence at 24 Sussex Drive in Ottawa, the Canada Aviation and Space Museum focuses on aviation in Canada within an international context – from its beginnings in 1909 to today.
Read more about the museum

Contact Us

Canada Aviation and Space Museum
11 Aviation Parkway
Ottawa ON K1K 2X5
Canada

613-991-3044
1-866-442-4416
contact@IngeniumCanada.org
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  • Plan Your Visit
    • Health and Safety
    • Hours
    • Admission
    • Location and Directions
    • Accessibility
    • Browse All Visitor Information
    • Buy Tickets
    • Online Resources for Science at Home
    • About the Museum
  • What's On at the Museum
    • Events
    • Exhibitions
    • Flights and Simulations
    • Spaces and Studios
  • Bookings and Rentals
    • School Programs
    • Summer Camps
    • Venue Rentals
    • Travelling Exhibitions
    • Virtual Field Trips
    • Group Visits
    • Birthday Parties
  • Educational Programs
    • School Programs
    • Virtual Field Trips
    • Program Location
      • At the Museum
      • At your School
      • Online
      • Browse all Educational Programs
    • Popular Links
      • 3D Educational Resources
      • Digital Learning Kits
      • Games and Apps
      • Online Resources for Science at Home
      • Try This Out
  • Collection and Research
    • Research Institute
    • Research Projects
    • Collection Resources
      • Ingenium Collection
      • Collection Highlights
      • Conservation and Collection Services
    • Library and Archives
      • Library and Archives Services
      • Library Catalogue
      • Digital Archives
    • Open Access
      • Ingenium APIs
      • Open Data
      • Open Documents
  • Projects and Initiatives
    • Ingenium Channel
    • The Legacy Series
    • Let's Talk Energy