A description of the aircraft and its characteristics can be found in the following references,

The Cierva W-11 "Air Horse", J. Gordon Leishman, VERTIFLITE Spring 2003, Page 52

Discussing the Helicopter, FLIGHT Staff, FLIGHT, December 2nd 1948, Pages 665-668

Overview

Data on design, manufacture and status

Design authority: Cierva Autogiro Company Ltd.

Primary manufacturer: Cierva Autogiro Company Ltd.

Parent type: Cierva Air Horse

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Multi-rotor (x3)

Crew required: 2

Crew seating: Side-by-side

Landing gear: Wheels (non-retractable)

Overall Dimensions

Data on aircraft size

Overall Height: 5.41 m (17.8 ft)

Overall Length: 30.05 m (98.6 ft)

Overall Width: 28.96 m (95.0 ft)

Engine Details

Aircraft powerplant (lift and/or propulsion)

Total number of engines: 1

Engine designation: RR Merlin 24 reciprocating

Engine manufacturer: Rolls-Royce

Take-off / rated power: 1209 kW (1620 hp)

Weights and Performance

Data on aircraft weight and flight characteristics

Max Gross Weight (ground): 7938 kg (17500 lb)

Max Range: 556 km (300 nm)

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