Canadair CL-41 Tutor

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CL-41 Tutor

Snowbirds flying the Canadair Tutor c.2005
Type	Trainer, Ground-attack aircraft
Manufacturer	Canadair
Designed by	Karl Irbitis, Bob Ross and Bob Werett
Maiden flight	13 September 1960
Retired	2000 (Canadian Forces)
Status	Small numbers currently in flying condition for testing and aerobatic demonstration
Primary users	Canadian Forces Royal Canadian Air Force Malaysian Air Force
Produced	1963–1966
Number built	212

The Canadian Canadair CL-41, designated the CT-114 Tutor in RCAF and later unified Canadian Forces use, is a jet trainer aircraft. Ordered in September 1961, the aircraft went on to serve as the Canadian Forces primary jet trainer until 2000, when it was replaced by the CT-155 Hawk and CT-156 Harvard II. The CL-41G supplied to Malaysia was built as a ground-attack aircraft.

1 Design and development
2 Operational history
3 Aerobatics
4 Variants
5 Operators
6 Survivors
7 Specifications for CL-41A (CT-114)
8 References
9 External links
10 Related content

[edit] Design and development

The CL-41 was designed and manufactured as a privately funded project by Canadair. The CL-41 design incorporated a turbojet-powered, low wing monoplane with a tricycle undercarriage and a T-type tail assembly. The flying controls are manual with spring tabs. The cabin, closed by a bubble-type canopy, can be pressurised to a differential of 3 psi (20 kPa or 0.2 kg/cm²). It was designed to be a side-by-side trainer for providing elementary jet flight training and other training to an advanced level. The prototype first flew on 13 September 1960.

One critical area of design was the positioning of the fin. The CL-41 was intended to demonstrate spin recovery. If the fin is too far forward, spin can not be initiated, but if it is too far aft, recovery becomes impossible. Model tests were done to find the optimum position. The original Tutor prototype had a cruciform tail, which was revised to the T-tail design by removing the portion above the horizontal stabilizer.

[edit] Operational history

In September 1961 the Canadian government ordered 190 examples of the production variant, CL-41A for the RCAF as the CT-114 Tutor. For over 30 years, the Tutor, known affectionately as "Toot" in RCAF and CF use, served steadfastly and effectively as a primary trainer. In 1976, the Canadian Forces modified 113 survivors with provision for two external fuel tanks (drop tanks) and upgraded avionics.

The company also developed an armament training and light attack variant, the CL-41G, with an uprated engine and underwing hard points to allow the carriage of external stores (up to 4,000lb (1814 kg) of weapons ) and drop tanks.

CL-41G prototype

In March 1966, the Royal Malaysian Air Force ordered 20 (serials M-22-01 to M22-11) CL-41G-5 Tebuan (which means "Wasp" in the Malay language) aircraft as "Counterinsurgency" (COIN) aircraft . The Tebuan entered service in Malaysia in 1967, serving for over 20 years, before being phased out in June 1986 and replaced by the Aermacchi MB-339A.

One other variant was developed, the CL-41R which was fitted with an F-104 Starfighter nose as a proposed electronic systems trainer for future RCAF CF-104 pilots. The R model never went into production.

Golden Centennaires flew the Canadair Tutor

[edit] Aerobatics

In 1967, ten Tutors were modified for use as a formation aerobatic aircraft by the RCAF (and later the unified Canadian Forces) display team, the Golden Centennaires to celebrate Canada's Centennial year. The display team was later disbanded but, a few years later, 431 Air Demonstration Squadron was reactivated as the nine-aircraft team, the "Snowbirds," who continue to perform at air shows and special events including the annual flypast on Canada Day over the capital city, Ottawa.

Modifications for the Snowbirds include: a smoke generating system, a unique paint scheme for added crowd appeal, and a highly tuned engine to enhance engine response in low level flying.

[edit] Variants

CL-41: Two prototypes, CF-LTW-X and CF-LTX-X used for company engineering and testing program
CL-41A: A total of 190 trainers produced for RCAF and CF use as the CT-114
CL-41G: A total of 20 ground-attack variants, known as the "Teuban"
CL-41R: One conversion of CF-LTX-X with a CF-104 nose grafted on to demonstrate the use of CF-104/F-104G radar and avionics; no production examples were built.

[edit] Operators

Canada (CT-114 Tutor)
- Royal Canadian Air Force
- Canadian Armed Forces
Malaysia
- Royal Malaysian Air Force

[edit] Survivors

CT-114 Tutor of the Canadian Snowbirds display team

Although the CL-41 Tutor has been retired from active training, a total of 22 Tutors continue to fly with the Canadian Forces with the Snowbirds and the Aerospace Engineering Test Establishment at CFB Cold Lake. A number of airframes are held in reserve for future deployment as replacement Snowbird mounts.

Today, at least five CL-41s fly as civilian aircraft, including one Teuban. The original prototype, CF-LTW-X is displayed as a "gate guardian" at Southport Aerospace at the former CFB Portage la Prairie. while the CL-41R, CF-LTX-X, is now part of the Reynolds-Alberta Museum in Wetaskiwin, Alberta.

[edit] Specifications for CL-41A (CT-114)

General characteristics

Crew: 2
Length: 32 ft 0 in (9.75 m)
Wingspan: 36 ft 6 in (11.13 m)
Height: 9 ft 0.75 in (2.84 m)
Powerplant: 1× General Electric J85-CAN-40 turbojet, 2,700 lbf (1,338 Kg)

Performance

Never exceed speed: 474 mph (763 km/h)
Range: 403 miles (648 km)
Service ceiling: 38,000 ft (11,850 m)

Armament

No armament, but the Tutor can carry external fuel tanks.

[edit] References

Dishlevoy, Roy W. "Hatching the Snowbirds: The Canadair CL-41/CT-114 Tutor, Its Early History Remembered." CAHS Journal, Vol, 45, No. 1, Spring 2007.
Molson, Ken M. and Taylor, Harold A. Canadian Aircraft Since 1909. Stittsville, Ontario: Canada's Wings, Inc., 1982. ISBN 0-920002-11-0.
Pickler, Ron and Milberry, Larry. Canadair: The First 50 Years. Toronto: Canav Books, 1995. ISBN 0-921022-07-7.