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AMS-Flight Carat: Difference between revisions

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The plane uses the [[wing]] from the [[Schempp-Hirth Discus]], one of the most successful [[sailplane]] wing designs.
The plane uses the [[wing]] from the [[Schempp-Hirth Discus]], one of the most successful [[sailplane]] wing designs.


It is a [[tail dragger]], and has [[retractable gear]]. Launch and powered flight is done by means of its 60 horsepower, 4 cylinder, 4 stroke engine. The engine is manufactured by [[VW]], modified by Sauer for aviation use. The airplane can not be towed aloft like traditional sailplanes.
Launch and powered flight is done by means of its 60 horsepower, 4 cylinder, 4 stroke engine. The engine is manufactured by [[VW]], modified by Sauer for aviation use. The airplane can not be towed aloft like traditional sailplanes.


It is a [[tail dragger]]. The Carat has electrically-operated [[retractable landing gear]] and a steerable tailwheel. Breaking is performed using a hydraulic hand break mounted on the control stick.
This wing is has [[turbulator]]s on the underside to achieve a controlled transition from laminar to turbulent flow.

This wing has [[turbulator]]s on the underside to achieve a controlled transition from laminar to turbulent flow.





Revision as of 19:26, 23 July 2007

AMS/
Carat
A Carat at the municipal airport in Hollister, California.
Type designation Carat A
Competition class n/a
Number built unknown
Crew 1
Length (fuselage) 6.21 m (20.4 ft)
Wingspan 15 m (49.2 ft)
Wing area 10.58 m² (114 ft²)
Aspect ratio 21.3
Empty mass ca. 325 kg (717 lb)
Maximum mass 470 kg (1037 lb)
Wing loading ca. 36.8 – 44.4 kg/m²
(7.5 - 9.1 lb/ft²)
Maximum speed 250 km/h (135 knots)
Cruising Speed
2400 rpm at sea level
165 km/h (89 kts)
Maneuvering speed 185 km/h (100 knots)
Best climb w/ max power 3.5 m/s at 125 km/h (700 fpm at 68 kts)
Stall speed 80 km/h (43 knots) at 470 kg
Minimum sink rate ca. 0.75 m/s at 85 km/h
(150 ft/min at 46 kts)
Best glide ratio ca. 35 at 108 km/h (58 kts)
Range under power ca. 900 km (486 NM)
Detail of the Carat's propeller with the engine off
Carat in flight

The Carat A is a single-seat, high performance motorglider. The sailplane is designed and manufactured by AMS Flight in Slovenia.

General description

The Carat is a racing motorglider. It has an unique propeller: the blades fold forward like a set of spears to minimize drag when the engine is off. This is in contrast to other motorgliders which either store the propeller inside the fuselage, or feather the propeller blades. The Carat's propeller is opened strictly by centrifugal force from the running engine, and folds automatically by a spring mechanism when the engine is stopped. The advantage is simplicity in the mechanism. However, one implication of this design is that the engine can not be windmill-started in the case the battery is drained.

The plane uses the wing from the Schempp-Hirth Discus, one of the most successful sailplane wing designs.

Launch and powered flight is done by means of its 60 horsepower, 4 cylinder, 4 stroke engine. The engine is manufactured by VW, modified by Sauer for aviation use. The airplane can not be towed aloft like traditional sailplanes.

It is a tail dragger. The Carat has electrically-operated retractable landing gear and a steerable tailwheel. Breaking is performed using a hydraulic hand break mounted on the control stick.

This wing has turbulators on the underside to achieve a controlled transition from laminar to turbulent flow.


Major features

  • Fast crusing speed and long range
  • Glide Ratio: 35/1
  • Conventional T-tail with fixed stabilizer and moving elevator
  • Retractable landing gear
  • Automatic control connections
  • Schempp-Hirth air brakes on upper wing surface
  • Can be rigged and de-rigged by one person


Sources