Introduction to Helicopter Engine Inlet Protection · 2020-02-02 · protection of your...
Transcript of Introduction to Helicopter Engine Inlet Protection · 2020-02-02 · protection of your...
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Filtration. Separation. Solution. TM
Pall Aerospace, 2009
Introduction to Helicopter Engine Inlet Protection
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PROPRIETARY TO PALL CORPORATION
Problems with airborne contaminationPall Solution Costs of airborne contamination In-service Experience (operators & helicopters)
Contents
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Sand / Dust (and other solid particulate contamination)
Compressor erosionTurbine blade glazing Turbine blade vibration & fatigue problemsBlockage of blade cooling passages
Problems With Airborne Contamination
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Problems With Airborne Contamination
Brownout!
Similar effects as Sand / Dust
Brownout is the term used to describe the result of helicopter rotorwash as it kicks up a cloud of dust while landing. Brownout causes accidents during helicopter landing and take-off operations in desert terrain, dust storms or general vehicle movements
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Image Courtesy Alan Radecki
Foreign Object Damage(FOD)
Serious damage to rotating & static components
Problems With Airborne Contamination
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Problems With Airborne Contamination
IceSimilar effects as FOD
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Problems With Airborne Contamination
Heavy RainEngine Flame Out
In certain conditions, where water accumulates on the fuselage at a stagnation point upstream of the engine air inlets, a mere half cup-full ingested as a slug is enough to cause engine flame out.
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Snow
Problems With Airborne Contamination
Photo courtesy Zoe Lucas
–Wet SnowEngine Flame-Out
Damaged Compressors
– Dry SnowNo Problem
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Problems With Airborne Contamination
Photo Courtesy Gabriel Savit
Salt SprayEngine Corrosion
Component Fouling/Power Loss
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All of the previously described problems are Flight-Safety relevant and can induce
excessive Maintenance Costs
All of the previously described problems are Flight-Safety relevant and can induce
excessive Maintenance Costs
Therefore
It is imperative to protect Engine Air Inlets
It is imperative to protect Engine Air Inlets
Problems With Airborne Contamination
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PROPRIETARY TO PALL CORPORATION
First Centrisep Engine - Advanced Protection System (EAPS) was designed by Pall in the late 60’s.
Continuous improvements in Technology and Design have translated into dramatic progress in overall performance & efficiency in a given space envelope.
Latest aerodynamic designs offer optimal overall protection to latest generation of high tech helicopter engines
Pall Centrisep®Engine - Advanced Protection System
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Centrisep EAPS Benefits
Benefits:• Self cleaning device, virtually maintenance free.
• Excellent F.O.D. protection. => Improved Flight Safety
• Protects engine by removing harmful solid and liquid contamination
• Excellent Snow / Icing protection.
• Easy user installation with available installation kit.
• Increased engine MTBUR for erosion… substantial increase in engine compressor erosion life. (reduced component wear)
• Reduced unscheduled engine removals
• Increased aircraft availability
• Pall’s Engineering experience provides optimum performance in given space envelope
Benefits:• Self cleaning device, virtually maintenance free.
• Excellent F.O.D. protection. => Improved Flight Safety
• Protects engine by removing harmful solid and liquid contamination
• Excellent Snow / Icing protection.
• Easy user installation with available installation kit.
• Increased engine MTBUR for erosion… substantial increase in engine compressor erosion life. (reduced component wear)
• Reduced unscheduled engine removals
• Increased aircraft availability
• Pall’s Engineering experience provides optimum performance in given space envelope
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Salt Spray
Engine Corrosion
Fowling / Power Loss
Scheduled Engine Overhaul costs from $160,000 to $350,000 (per engine)
Unscheduled engine repair costs from $70,000
Installing the Centrisep EAPS will improve protection of your helicopter’s most critical
component – the engine
Scheduled Engine Overhaul costs from $160,000 to $350,000 (per engine)
Unscheduled engine repair costs from $70,000
Installing the Centrisep EAPS will improve protection of your helicopter’s most critical
component – the engine
Centrisep EAPS Benefits
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Centrisep EAPS vs Inlet Particle Separators (IPS)
Compressor Disc protected by I.P.S. Separator System
Compressor Disc protected by I.P.S. Separator System
Compressor Disc protected by Pall Centrisep® EAPS System
Compressor Disc protected by Pall Centrisep® EAPS System
Qualification MIL-E-5007C AC CoarseParticle size of sand 200um 30umTypical Vortex efficiency 96.5% 95.5%Efficiency of typical IPS 92% 75%Engine life increase with Centrisep® compared to IPS 2.3 5.5
Compressor blade erosion with IPSCompressor blade “as good as new”with EAPS
Proven Dust & Sand Separation Efficiency
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This shows only 1/10 of the test dust actually injected into engine air inlet (15.6kg).
Trial was equivalent to a minimum of 300 landings in brownout!
Tiger Engine TestChallenge: engine had to survive 10 hrs in brownout conditions with a power degradation of <5%
Total Dust Fed156Kg
(344 lbs)Power Loss after
test Only 3%
Proven Dust & Sand Separation Efficiency
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Compressor as good as new after 100 hours and98 desert landings on unprepared sites in the Sahara with new Centrisep EAPS.
2006 Trans-African Rally
Standard EAPS:
New design - Tiny amount of dirt in Inner shaftOld design - Large amount of dirt in Inner shaft
Performance Comparison - 30 year old Design and latest Design
•74 Flight Hours•76 Landings•8.7g of dust in hollow shaft
New EAPS:•100 Flight Hours•98 Landings•0.6g of dust in hollow shaft
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PROPRIETARY TO PALL CORPORATION
Centrisep EAPS has good operational capability in Snow and Ice conditions.
Centrisep EAPS has good operational capability in Snow and Ice conditions.
Centrisep EAPS - Cold Weather Operation
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PROPRIETARY TO PALL CORPORATION
Over 9000 Centrisep units have been supplied to date.Customers include:
EurocopterAgustaWestlandBellBoeingSikorskyKazanUlan UdeMil Helicopter PlantMD Helicopters
US ArmyUK RAFRoyal Netherlands Air ForceEgyptian Air ForceRoyal Australian NavyNAMSAHeli UnionMaverick Helicopters
Centrisep EAPS - Sample of current Operators
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Typical Centrisep EAPS Applications – Super Puma
Photo Courtesy Deny Guerionne
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PROPRIETARY TO PALL CORPORATION
Photo Courtesy Girish Thorat
Typical Centrisep EAPS Applications – SA315 Lama
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Typical Centrisep EAPS Applications – CH47
Photos Courtesy U.S. Army
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Typical Centrisep EAPS Applications – MIL Mi8 / 17
Photo Courtesy Iliyn Anton
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Typical Centrisep EAPS Applications – AW139
Photo Courtesy AgustaWestland
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Typical Centrisep EAPS Applications – Bell427
Photo Courtesy Pierre-Yves Jan
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Typical Centrisep EAPS Applications – EC135
Photo Courtesy Pierre-Yves Jan
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Typical Centrisep EAPS Applications – Sea King
Photo Courtesy AgustaWestland
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PROPRIETARY TO PALL CORPORATION
For Further Information,Please visit http://www.pall.com/contact
For the technical features of your particular helicopter, please ask your sales
representative for the specific presentation.
For the technical features of your particular helicopter, please ask your sales
representative for the specific presentation.