Centrisep® Engine Advanced Protection System (EAPS) for HAL Dhruv Advanced Light Helicopter (ALH)

Fit and Forget Engine Protection
The HAL Dhruv helicopter is used by India’s defense forces in a variety of roles. It is capable of flying at high altitudes and in mountainous regions, their mission cannot be delayed or restricted by a blocked filter; they require a maintenance-free engine protection system.

The “fit and forget” Centrisep Engine Advanced Protection System is an ideal solution for such challenging operations. It shields the engine inlet from airborne contamination, which results in:

• Safer operation by protecting against sand & dust, FOD, ice, and snow
• Increased operational availability
• Protection against engine erosion
• Increased time between overhauls

On the ALH, the unit consists of two box-shaped filters fitted on both sides of the helicopter, in front of the modified engine air intake pavilion.

Part numbers:

• QB0651
• QB0652                                

Scavenge system:

• Fan

Certification:

• Indian Ministry of Civil Aviation

Certified for operation in case of inadvertent entry into icing conditions and is allowed to operate without the need for a by-pass door and differential pressure monitoring systems.

Maintenance

The Centrisep EAPS is a “fit and forget” system; there are no inlet barrier filters to replace or clean. As with all aircraft equipment, routine visual inspection is recommended.
In case of damage, please refer to the Component Maintenance Manual available through Pall Aerospace. 

For additional information about this product, please contact your local Pall representative.

The Pall Centrisep EAPS solution is also an environmentally friendly alternative to oil-wetted barrier filters. There is no filter replacement and no daily cleaning as with oil-based solutions, which are difficult and expensive to dispose of.

The ALH helicopter is fitted with Pall's Centrisep EAPS, a “fit and forget” solution that extends the erosion life of the engine.

Agusta Westland AW109 Power AW109S AW119 AW139	Bell 205 / UH-1 206	Boeing CH-47	Eurocopter AS330, AS332, EC225, EC725, Denel Oryx AS350, EC130, EC550, Z11 EC135 / EC635 SA315, SA316  SA341, SA342  Tiger
HAL Dhruv Advanced Light	Mil Mi 8 Mi 17 Mi 24, Mi 25, Mi 35	NHI NH90	Sikorsky Sea King, S-61 and SH-3

1997	Pall Aerospace is selected by Hindustan Aeronautics Ltd. for the supply of the ALH Centrisep EAPS.
2000	Delivery of the first prototypes.
2002	Desert trials are carried out by the Indian Forces with two helicopters. 120 hours in the harsh environment of the Rajasthan desert, without any engine problems reported.
2003	Fifty (50) hours engine erosion test with Pall Aerospace Centrisep EAPS successfully carried out by engine manufacturer Turbomeca.