Royal Australian Navy (RAN) SAR/plane guard version

Source: ”Helicopters & Autogyros of the World”, Paul Lambermont with Anthony Pirie, Second edition 1970, Cassell & Company Ltd, SBN 304 93390 2

and,

Source: ”Bristol 171 Sycamore”, BAe Systems Heritage Team, BAe Systems Heritage Web site, Last accessed 11 Jul 2018 (with kind permission from BAe)

Overview

Data on design, manufacture and status

Design authority: Bristol Aeroplane Company, Helicopter Division

Primary manufacturer: Bristol Aeroplane Company, Helicopter Division

Parent type: Bristol Type 171 Sycamore

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 1

Crew seating: Side-by-side

Landing gear: Wheels (non-retractable)

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height:  
Overall Length:  
Overall Width:  
Airframe Dimensions
Airframe Length:  
Airframe Width:  
Airframe Height:  
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track:  
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width:  

Weights and Performance

Data on aircraft weight and flight characteristics

Weights
Max Gross Weight (ground): 2,449 kg 5,399 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 2,449 kg 5,399 lb
Empty Weight: 1,873 kg 4,129 lb
Useful Load: 576 kg 1,270 lb
Empty Weight Fraction: 0.765
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed:  
Never Exceed Speed:  
Service Ceiling:  
Range and Endurance
Max Range:  
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

Provided powerplant data is for uninstalled, sea level, static operations.

Powerplant
Number of engines: 1
Designation: Alvis Leonides 524/1 reciprocating
Manufacturer: Alvis Car and Engineering Company Ltd
Normal Ratings
Max continuous:  
Take-off / rated: 398 kW 533 hp
Intermediate:  
Maximum:  
OEI Ratings
OEI contingency:  
OEI continuous:  
OEI 30-second:  
OEI intermediate:  

Primary Lift Device

Data on primary lift devices such as main rotors

Main Rotor Characteristics
Diameter: 14.80 m 48.56 ft
RPM:  
Direction of Rotation: Clockwise
Hub Type: Fully articulated
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord:  
Blade Tip Geometry: Conventional , with mass balance at tip
Blade Twist:  
Number of Blades: 3
Main Rotor Derived Characteristics
Disc Area: 172.03 m² 1851.8 ft²
Disc Loading: 14.24 kg/m² 2.916 lb/ft²
Solidity:  
Main Rotor Blade Derived Characteristics
Blade area per blade:  
Tip Speed:  

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter:  
Configuration: Unknown
Direction of Rotation: Unknown
RPM:  
Tail Rotor Blade Characteristics
Number of Blades:  
Blade Construction: N/A
Blade Chord:  
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area:  
Solidity:  
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade):  

Related VFS Resources

Resources related to the Sycamore HR.50, provided by the Vertical Flight Society.
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Related Public Resources

Resources related to the Sycamore HR.50, provided by public sources across the internet.

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