Continental tiara
| Teledyne Continental Motors | |
|---|---|
 Tiara 0-405 |
|
| Continental tiara | |
| Production period: | 1969-1975 |
| Manufacturer: | Teledyne Continental Motors |
| Developing country: |
 United States
|
| First run: | 1960s |
| Working principle: | Otto |
| Motor design: | Boxer engine |
| Cylinder: | 4-8 |
| Mixture preparation: | Injector |
| Engine charging: | Turbocharger optional |
| Cooling system: | Air cooling |
| Previous model: | none |
| Successor: | none |
Continental Tiara is a series of air-cooled airplane boxer engines that was developed and built by the US manufacturer Teledyne Continental Motors . The series was not a commercial success and caused the company losses of several million US dollars .
construction and development
Continental began developing the Tiara series in 1965. At the time, Continental's subsidiary Teledyne CAE, which developed turbine engines, had just developed the T65 , a small shaft turbine that Bell was considering for its new Model 206 . In order to make the price of the T65 acceptable, Continental would have had to finance the cost of the production tools. The management therefore had to choose between the T65 and the Tiara series. The choice fell on the Tiara series.
Although the Tiara engines are basically conventional boxer engines, they have some unique properties. The engines worked at high speeds. Therefore, gears with a reduction of 0.5: 1 were used to reduce the propeller speed with the extended camshaft supporting the propeller. The propeller shaft was equipped with a Hydra-Torque drive, which reduced vibrations from the shaft. All engines were fuel injected with optional turbochargers .
The fuel consumption of the engines was high and was a competitive disadvantage during the oil crisis . In addition, the performance of the Tiara engines was not significantly higher than that of the engines already on the market, so that it was difficult for the aircraft manufacturers to reduce the costs of their approval Justify machines for the tiara motors. All of these problems resulted in Continental finally stopping production of the engines in 1980.
variants
Four-cylinder
Six-cylinder
- Tiara 6-260 (O-405)
- 260 hp (191 kW), displacement 6.6 liters
- Tiara 6-260A
- Tiara 6-285 (O-405)
- 285 PS (210 kW), displacement 6.6 liters
- Tiara 6-285A
- Tiara 6-320 (O-405)
- 300 PS (221 kW), displacement 6.6 liters
- Tiara T6-260 (O-405)
- 260 hp (191 kW), displacement 6.6 liters, turbo-charged
- Tiara T6-285 (O-405)
- 285 PS (210 kW), displacement 6.6 liters, turbo-charged
- Tiara T6-320 (O-405)
- 300 PS (221 kW), displacement 6.6 liters, turbo-charged
Eight-cylinder
- Tiara 8-380 (O-540)
- 380 hp (279 kW), displacement 8.8 liters
- Tiara T8-450 (O-540)
- 450 PS (331 kW), displacement 8.8 liters, turbo-charged
commitment
Tiara 6
- Cerva CE.44 Couguar
- Piper PA-36-285 Pawnee Brave
- Robin HR100 / 285TR tiara
- Spencer S-12-EAir Car ( prototype )
- Transavia PL-12 T-320 Airtruk
- Trident TR-1 Trigull (prototypes)
Individual evidence
- ^ A b c d Bill Gunston: The Development of Piston Aero Engines . 2nd Edition. Haynes Publishing, Sparkford, United Kingdom 2006, ISBN 0-7509-4478-1 , pp. 119 (English).
- ^ A b c d Richard A. Leyes II: The History of North American Small Gas Turbine Aircraft Engines . Smithsonian Institution, Washington, DC 1999, ISBN 1-56347-332-1 , pp. 119 (English).
- ↑ Part 1: Introduction and O-110 through OL-300. (No longer available online.) Teledyne Continental Motors, archived from the original ; accessed on December 2, 2008 .
