Vertipedia - AgustaWestland EH101-411 Merlin HC.3

Utility version for the RN (Royal Navy), now part of the Commando Helicopter Force. Previously operated by the RAF (Royal Air Force) as part of the Support Helicopter Force in the United Kingdom.

Overview

Data on design, manufacture and status

Design authority: AgustaWestland N.V.

Primary manufacturer: AgustaWestland N.V.

Parent type: AgustaWestland AW101/EH101

Aircraft status: Operational

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift devices: 1 Single main rotor

Dedicated control device: 1 Tail rotor

Crew required: 2 in Side-by-side arrangement

Landing gear: Wheels (all retractable)

Key Characteristics

Data on key physical features

Aircraft Details

Data on aircraft configuration, weights, flight performance and equipment

Layout and Dimensions

Weights and Performance

Engine Details

Primary Lift Device

Primary Control Device

Overall Dimensions
Overall Height:	6.66 m	21.9 ft
Overall Length:	22.83 m	74.9 ft
Overall Width:	18.59 m	61.0 ft

Airframe Dimensions
Airframe Length:	19.30 m	63.3 ft
Airframe Width:	5.06 m	16.6 ft
Airframe Height:	5.09 m	16.7 ft

Landing Gear Dimensions
Landing Gear Base:	6.99 m	22.9 ft
Landing Gear Track:	3.82 m	12.5 ft

Cabin Dimensions
Cabin Internal Height:	1.83 m	6.0 ft
Cabin Internal Length:	6.50 m	21.3 ft
Cabin Internal Width:	2.49 m	8.2 ft

Weights
Max Gross Weight (ground):	14,600 kg	32,187 lb
Max Gross Weight (airborne):
Max Take-off Weight:	14,600 kg	32,187 lb
Empty Weight:
Useful Load:
Empty Weight Fraction:

Climb Performance
Max Rate of Climb:

Hover Performance
Hover Ceiling IGE:	3,307 m	10,850 ft
Hover Ceiling OGE:

Limitations
Max Level Flight Speed:	278 km/h	150 kts
Never Exceed Speed:	309 km/h	167 kts
Service Ceiling:

Range and Endurance
Max Range:	1,360 km	734 nm
Max Endurance:	7 hrs

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

Powerplant
Number of engines:	3
Designation:	Turbomeca RTM 322 02/8 turbine
Manufacturer:	Turbomeca

Normal Ratings
Max continuous:	1406 kW	1885 hp
Take-off / rated:	1689 kW	2264 hp
Intermediate:
Maximum:

OEI Ratings
OEI contingency:
OEI continuous:	1689 kW	2264 hp
OEI 30-second:	1864 kW	2499 hp
OEI intermediate:

Main Rotor Characteristics
Diameter:	18.59 m	61.00 ft
RPM:
Direction of Rotation:	Counterclockwise
Hub Type:	Fully articulated with elastomeric bearings

Main Rotor Blade Characteristics
Blade Construction:	Glass/carbon with metallic erosion shields
Blade Chord:	0.680 m	2.23 ft
Blade Tip Geometry:	BERP III with anhedral
Blade Twist:
Number of Blades:	5

Main Rotor Derived Characteristics
Disc Area:	271.51 m²	2922.6 ft²
Disc Loading:	53.77 kg/m²	11.014 lb/ft²
Solidity:	0.1164

Main Rotor Blade Derived Characteristics
Blade area per blade:	6.32 m²	68.0 ft²
Tip Speed:

Tail Rotor Characteristics
Diameter:	4.10 m	13.45 ft
Configuration:	Pusher
Direction of Rotation:	Top blade aft
RPM:

Tail Rotor Blade Characteristics
Number of Blades:	4
Blade Construction:	Composite
Blade Chord:
Blade Twist:

Tail Rotor Derived Characteristics
Disc Area:	13.20 m²	142.1 ft²
Solidity:

Tail Rotor Blade Derived Characteristics
Tip Speed:
Blade Area (per blade):

References

References and sources used

AW101

AgustaWestland
Home | Products | Helicopters | AW101, 19 Feb 2015
Website
General overview of latest AW101 models

AW101 Utility

AgustaWestland
AgustaWestland Product Brochure for AW101 Utility, 19 Feb 2015
Website

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Images

Overview

Attribution

Main rotor

Attribution

Main Rotor Diameter:	18.59 m	61.00 ft
Max Gross Weight (ground):	14,600 kg	32,187 lb
Useful Load (calculated):

Number of engines:	3 Turbines
Max Level Flight Speed:	278 km/h	150 kts
Max Range:	1,360 km	734 nm
Max Endurance:	7 hrs	7 hrs