Here in this post, we will see the Dhruv Advanced Light helicopter(ALH).
LENGTH WITH ROTORS TURNING
15.87m
HEIGHT WITH ROTORS TURNING
4.98m
HEIGHT TO TOP OF ROTOR HEAD
3.93m
MAIN ROTOR DIAMETER
13.2m
FUSELAGE LENGTH
13.43m
FUSELAGE WIDTH
2m
CABIN VOLUME EXCLUDING FLIGHT DECK
7.33m
CABIN WIDTH
1.97m
CABIN HEIGHT
1.42m
TAKE-OFF WEIGHT
4,500kg
EMPTY WEIGHT
2,550kg
FUEL
1,075kg
UNDERSLUNG LOAD
1,000kg
TYPE
Turbomeca TM 333-2C or 2B2 engines
RATING
740kW take-off power
IN DEVELOPMENT
Shakti (Ardiden 1H)
RATING
900kW take-off power
RANGE
700km
ENDURANCE
4 hours 20 minutes
CRUISE SPEED
265km/h
ECONOMICAL CRUISE SPEED
225km/h
MAXIMUM ALTITUDE
6,500m
RATE OF CLIMB
780m/min
HOVER CEILING IN GROUND EFFECT
4,400m
HOVER CEILING OUT OF GROUND EFFECT
3,800m
Dhruv (Pole Star) propelled light helicopter (ALH) is grown indigenously by the Helicopter Division of the legislature claimed Hindustan Aeronautics Limited (HAL).
It is a light (5.5t class) multirole and multimission helicopter for armed force, airforce, naval force, coastguard and common activities, for both utility and assault jobs by day and night.
The helicopter, which is worked to FAR 29 details, entered arrangement creation in 2000. Its prime variations are named Dhruv Mk-I, Mk-II, Mk-III and Mk-IV or Weapon System Integrated (WSI).
HAL has created 228 Dhruv helicopters till March 2017, of which 216 are operational with the Indian Armed Forces.
Orders and deliveries of the Indian helicopter:
Taking all things together, 18 Dhruv helicopters were conveyed to Indian Defense Forces in 2000-2003 – eight to the military, three to the naval force, four to the airforce and three to the coast monitor.
The military got its initial three Dhruvs in March 2002. By June 2008, 76 helicopters had been conveyed to the military and airforce with 159 more on hand. The Indian Navy has chosen not to submit any further requests.
The fleet of the Indian Air Force Display Team, Sarang (Peacock in English) includes the Dhruv helicopters.
In February 2011, HAL gave more than five Dhruv Mk-III propelled light helicopters to the Indian Army during the Aero India 2011 Air Show.
In June 2008, HAL got the primary fare request for the Dhruv with seven helicopters for the Air Force of Ecuador.
In August 2006, Indian Air Force and Coast Guard Dhruv helicopters were instrumental in salvage activities in the wake of decimating floods in India. Over 500 people were rescued.
In February 2007, the Dhruv was equipped for high-height/low-temperature activities in Kashmir and Jammu.
In August 2007,maiden flights occurred of the Dhruv controlled by the new Shakti motor and of the weaponised variation of the helicopter.
In September 2007, the Indian Army announced that the Dhruv was ready for deployment to the Siachen sector in the Himalayas. The helicopter was conveyed to the high-height airbase at Manasbal (Srinagar) and, in October 2007, a Dhruv helicopter flew at a record elevation of 27,500ft in Siachen.
The nation's National Disaster Management Authority (NDMA) requested 12 Dhruv helicopters outfitted with a full clinical suite in 2007.
In August 2008, HAL was granted a $50m contract for providing a helicopter to the Ecuadorian Air Force and two helicopters to the Peruvian Health Services.
HAL is presently delivering 159 Dhruv helicopters for the Indian Army and IAF. In 2017, the organization got orders for providing 73 ALH units in Mk-III and Mk-IV variations to the Army, Coast Guard and Navy.
HAL and Israel Aircraft Industries (IAI) have a consent to advertise the Dhruv helicopter around the world. The helicopter has been provided to the Nepal Army, the Mauritius Police, and Maldives.
Design of the Dhruv ALH:
The Dhruv ALH helicopter is of ordinary structure and around two-thirds by weight of composite development. The high tail blast permits simple access to the back clamshell stacking entryways.
The four-bladed hingeless principle rotor can be physically collapsed. The sharp edges are mounted between cruciform-molded carbon-fiber-fortified plastic plates on a fiber elastomer built rotor head. The tail section features bearingless tail rotor.
The helicopter is furnished with a functioning vibration control framework created by Lord Corporation of North Carolina that utilizes sensors to screen on-board conditions and yields signs to actuators to cancel fuselage floor vibrations.
Cockpit and avionics:
The cockpit area of the fuselage is of Kevlar and carbon-fiber development and is fitted with crashworthy seats.
The route suite incorporates a worldwide situating framework, a Doppler route framework, separation estimating gear, a genuine velocity pointer, programmed bearing locater, a heading reference framework, radio altimeter, VHF omnidirectional ranger and instrument landing system (VOR/ILS) and marker beacons. The aircraft is equipped with a SFIM Inc. four-axis automatic flight control system.
The correspondences suite incorporates HF, UHF, and VHF radio interchanges.
IAI built up a coordinated helicopter flying suite for the Dhruv, including sunlight and warm imaging cameras, electronic fighting suite, and perception and focusing on gadgets.
The Dhruv Advanced Light Helicopter is likewise equipped with hostile to reverberation vibration disengagement framework (ARI) full position computerized electronic control (FADEC), and a programmed flight control framework.
Weapons and armaments on the Dhruv:
The army and airforce helicopters have stub wings fitted to carry up to eight anti-armour missiles, four air-to-air missiles or four rocket pods for 70mm and 68mm rockets.
In December 2006, Nexter Systems (once in the past Giat) was granted an agreement for the establishment of the THL 20 20mm firearm turret on the initial 20 Indian powers Dhruv helicopters. The turret is equipped with the M621 low-draw back gun and is joined with a protective cap mounted sight.
An adaptable weapons conveying framework is introduced for shipping the weapons.
WSI versions for the Indian Army are fitted with the Nag anti-tank missile, being developed by India’s Defence Research and Development Organisation (DRDO).The Nag rocket has imaging infrared direction and a scope of about 4km. The WSI variation additionally has FLIR (forward-looking infrared), CCD (charge coupled gadget) camera and an objective procurement framework with warm sight and laser rangefinder.
The maritime variation can convey two torpedoes or four enemy of boat rockets.
Countermeasure capabilities:
The Dhruv's countermeasures suite can include: radar and rocket finders, infrared jammer, refuse and flare distributors.
Saab Avitronics was granted a sequential creation contract in December 2008 for the coordinated cautious guides suite (IDAS) self-security frameworks for Indian military Dhruv helicopters. IDAS has additionally been fitted on Rooivalk, NH90 and Super Lynx 300 helicopters.
Advanced light helicopter cabin:
The 7.3m³ cabin accommodates several layouts. As a traveler helicopter the lodge obliges 12 or 14 seats.
The cargo compartment at the rear of the cabin has a volume of 2.16m³.A crew door and a rearward sliding door are installed on each side of the fuselage for the military helicopters.
Clamshell entryways at the back of the lodge give simple and quick access to stacking and emptying freight.
Designed as an air emergency vehicle the helicopter can convey two cot patients and four survivors or clinical specialists or four cot patients and two clinical orderlies.
Engines on the Indian multirole ALH:
The helicopter has a twin-motor setup permitting proceeded with flight for all intents and purposes all through the flight envelope. The model helicopter is fitted with two Turbomeca TM 333-2C or 2B2 motors evaluated at 740kW take-off force.
A more powerful engine for the Dhruv, the Shakti (which carries the French name Ardiden 1H) rated at 900kW was developed under a cooperative agreement between HAL and Turbomeca and manufactured at Bangalore. Avio was chosen to gracefully coordinated powerful frameworks (IDS) for the Shakti motor.
The principal trip of the Dhruv Advanced Light Helicopter with the new motor occurred in August 2007 and it was ensured in 2008.
The helicopter is fitted with self-fixing crash-safe tanks introduced under the lodge floor. The fuel framework incorporates cross taking care of and fuel dumping frameworks. The maximum fuel capacity is 1,400l.
Helicopter landing gear:
The airforce and army helicopters are equipped with non-retractable metal skid landing gear. All variations of the helicopter are fitted with a tail slide to ensure the tail rotor in tail-down arrivals.
FPT Industries, Portsmouth, UK, supplies the Kevlar buoyancy sacks for the slip and wheeled variations of the helicopter. The helicopter can likewise be furnished with a day to day existence pontoon.
0 Comments