Vertipedia - HAL LUH

Designed for use in the Indian Armed Forces, the helicopter features main rotor blade folding, armor plating, flare and chaff dispensers (FCD), a glass cockpit with Integrated Architecture and Display System (IADS) and night flying capability. The aircraft can be fitted with a hoist, cargo sling, emergency floatation systems, auto pilot and a fixed sight (with FLIR, CCD, LFR and Laser Designator).

The HAL Light Utility Helicopter has a maximum weight of 3,120 kg and payload of 400 kg. The aircraft seats 6 passengers in addition to the two pilots.

Overview

Data on design, manufacture and status

Design authority: Hindustan Aeronautics Limited

Primary manufacturer: Hindustan Aeronautics Limited

Parent type: No type defined

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: Skids

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:	3.40 m	11.2 ft
Overall Length:	11.50 m	37.7 ft
Overall Width:	11.60 m	38.1 ft

Airframe Dimensions
Airframe Length:
Airframe Width:	1.60 m	5.2 ft
Airframe Height:

Landing Gear Dimensions
Landing Gear Base:
Landing Gear Track:

Cabin Dimensions
Cabin Internal Height:
Cabin Internal Length:
Cabin Internal Width:

Cruise Speed: 240 km/h; Range (with full payload): 350 km

Weights
Max Gross Weight (ground):
Max Gross Weight (airborne):
Max Take-off Weight:	3,117 kg	6,872 lb
Empty Weight:	1,910 kg	4,211 lb

Climb Performance
Max Rate of Climb:

Hover Performance
Hover Ceiling IGE:
Hover Ceiling OGE:

Limitations
Max Level Flight Speed:
Never Exceed Speed:
Service Ceiling:	6,500 m	21,325 ft

Range and Endurance
Max Range:
Max Endurance:

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

Powerplant
Number of engines:	1

Normal Ratings
Max continuous:
Take-off / rated:
Intermediate:
Maximum:

OEI Ratings
OEI contingency:
OEI continuous:
OEI 30-second:
OEI intermediate:

Main Rotor Characteristics
Diameter:	11.60 m	38.06 ft
RPM:
Direction of Rotation:	Clockwise
Hub Type:	Hingeless

Main Rotor Blade Characteristics
Blade Construction:	Composite
Blade Chord:
Blade Tip Geometry:
Blade Twist:
Number of Blades:	4

Main Rotor Derived Characteristics
Disc Area:	105.68 m²	1137.6 ft²
Disc Loading:
Solidity:

Main Rotor Blade Derived Characteristics
Blade area per blade:
Tip Speed:

Tail Rotor Characteristics
Diameter:
Configuration:	Unknown
Direction of Rotation:	Unknown
RPM:

Tail Rotor Blade Characteristics
Number of Blades:	2
Blade Construction:
Blade Chord:
Blade Twist:

Tail Rotor Derived Characteristics
Disc Area:
Solidity:

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

References

References and sources used

Hindustan Aeronautics Limited

Hindustan Aeronautics Limited
14 June 2017
Website

The Twin-Engine BO-105

A.C. Ballauer and P. F. Sheridan
VERTIFLITE August 1969, August 1969
Periodical
Good description of the overall vehicle

Vertiflite, Spring 2011, India Special

AHS International
Hirschberg, Mike. "Frome Chetak to Dhruv: The History of HAL Helicopters". Vertiflite, Vol. 57, No. 1. 2011. Print., 2011 (page 58)
Book