Bell 205A1, UH-1H Inlet Barrier Filter (IBF) System

Bell 205A-1, TC UH-1H

Bell 205A1, UH-1H

● Maximum engine debris/FOD protection which allows consistent flight operations and extends engine time on wing. Improved protection over an inertial design and significantly better protection than a FOD screen.

● Pleated barrier filter element provides improved air flow versus inertial separation vortex/swirl tubes typical with IPS.

● Return on Investment (ROI): • Less premature engine removals, meet expected engine TBO.

• Long-life filter assemblies, 4,500 hour (15 - 300 hour intervals).

• Reduction in corrosive salt air entering engine.

• Engine overhaul cost reduction due to elimination of erosion and contamination on all rotating and pneumatic components.

• Reduced maintenance time with improved plenum access.

• Common Line Replaceable Units (LRU) for mixed IBF fleets.

• Bleed air system maintenance eliminated with IBF.

Donaldson IBF Benefits

Bell 205A1, UH-1H

● Operational Considerations: • Improved power margin for high/hot operations and

confined landing zones. Certified for operation with basic inlet charts.

• Engine performance retention after barrier filter installation.

• Inlet air bypass system backup not available with IPS for added safety margin.

• Certified for flight in falling and blowing snow IAW helicopter manufacturers flight manual requirements.

• Improved engine inlet and drive shaft access.

• Common components with other Donaldson certified systems.

• Integrated engine water wash capability does not require filter removal.

• Over 10 pounds lighter than IPS.

• IBF environmental cover included with kit.

Donaldson IBF Benefits

Bell 205A1, UH-1H

● IPS utilize traditional inertial particle separation technology, barrier filter uses current technology and state of the art integration.

● Barrier filter does not require the use of engine bleed air as the IPS does which reduces engine power available.

● Inertial separation vortex/swirl tubes routinely become clogged with straw, leaves and bugs degrading performance, barrier filter is immune to this type debris and operates without degradation.

● Barrier filters have significantly higher separation efficiency than inertial separators. Barrier filter typically >99% capture efficient on ISO Coarse & Fine dust, inertial separator typically <96% capture efficiency on ISO Coarse dust and far less on ISO Fine dust.

● Barrier filters are effective regardless of engine power setting, inertial separators only effective when they have adequate engine bleed air typically available above flight idle power setting.

● Significant decrease in fine sand ingestion reduces engine erosion damage, offsite landings in unprepared sites no longer a concern.

● Engine bleed air system maintenance eliminated along with chance of engine stall margin reduction from leaking valves and lines.

● IBF is approximately 10 lbs lighter than EAPS.

Donaldson IBF System Considerations

Bell 205A1, UH-1H

● Key Features: • Sealed plenum design composed of sheet metal,

machined aluminum and composite parts.

• Donaldson IBF replaces Engine Air Particle Separator (EAPS), Improved Particle Separator (IPS) or FOD screen assemblies.

• Upper plenum houses 4 filters and mounts to aircraft structure similar to IPS.

• Compression seal between upper & lower inlet plenum.

• Actuator driven dual bypass doors, actuator common with Donaldson Bell 407 and 206L-3/4 IBF.

• Lower plenum mounts to engine front face.

• Dual bypass door to eliminate distortion in bypass operational mode.

• System disassembles in 5 Pieces.

• Quick Release Latches and Fasteners.

• Optional FOD screen configuration interchangeable with barrier filter assemblies.

Donaldson IBF Features

Bell 205A1, UH-1H Donaldson IBF Features

Dual Bypass Doors

FMA

US Patent 6,595,742

Bell 205A1, UH-1H Donaldson IBF Features

Interchangeable FOD Screens

Engine Water Wash Fittings

Bell 205A1, UH-1H Previous 205/UH-1H EAPS & IPS Systems

Pleated Screen/Foam Filters With FOD Screen

Improved Particle Separator (61 Lbs)

Inertial Particle Separator With Pleated Screen

Bell 205A1, UH-1H

Each engine mount shimmed up to .300 inch to align engine with transmission.

Lower plenum

mounted to engine.

Different engine

shimming adjustments on individual aircraft shift position of

lower plenum to adjust for

aircraft to aircraft

variations.

Upper plenum

mounted to fixed

structural deck.

IBF Installation Sealed upper and lower plenum to restrict unfiltered air from entering engine inlet

Bell 205A1, UH-1H Donaldson IBF Flow Path

Airflow Hover Air to Side Filters

Hover Air to Upper Filters

Transmission Bay

Forward Flight Airflow

Hover Airflow

Bell 205A1, UH-1H Access and Basic Components

Step 1 Step 2

Remove Upper Plenum

(4 Bolts)

Remove Upper Inner Duct Assy

(4 Latches)

Bell 205A1, UH-1H

Step 3 Step 4

Remove Lower Driveshaft Cover Assy

(4 Bolts, 4 Stud Nuts)

Remove OEM Drive Shaft

(2 V-Band Clamps)

Remove Lower Plenum Assy

(8 Bolts)

Access and Basic Components

Bell 205A1, UH-1H

Step 5

Remove Inlet Ring Assy

(1 V-Band Clamp, 18 bolts)

Component Est.

Weight (Lbs.)

4 Filters** 19.6

Upper Plenum Assy 16.1

Upper Inner Duct Assy 1.7

Lower Plenum Assy 6.1

Inlet Ring Assy 7.7

Total 51.2*

Access and Basic Components

*IPS & Drain Weight = 65 lbs

**Weight of dirt not included

Bell 205A1, UH-1H

● Common cockpit switch with the Donaldson IBFs for the Bell 205A, 206L-1/3/4, 407, 430, AgustaWestland AW119, AW139, Eurocopter AS350, EC130.

● Easily viewed and accessed cockpit annunciator/switch for bypass operation.

● LED illuminated, momentary push button (Optional NVIS Yellow Class B compatible).

● “FILTER” - indicator illuminated based on signal from differential pressure sensor, Caution - high pressure drop indication.

● “BYPASS” - illuminates whenever the bypass door is open based on door position switch, Caution – Bypass is open.

● “FILTER” - indicator will also extinguish once door opens and pressure drop has been reduced, redundant indication for pilot.

Donaldson IBF System Cockpit Switch

Bell 205A1, UH-1H

● Pre and Post flight indication of filter contamination level, maximum pressure drop.

● Allows flexibility for mission planning

with predictable service cycles, particularly in high tempo desert environments.

● Verification of post cleaning effectiveness.

● Provides the capability for “On Condition Maintenance,” between established cleaning intervals, eliminating unnecessary service.

● Measures plenum pressure versus ambient, across the filter system.

● Similar FMA used on other Donaldson IBFs for the Bell 205A, 206B, 206L-1/3/4, 407, 430, AgustaWestland AW119, AW139, Eurocopter AS350, EC130, MD Helicopters MD500.

Donaldson IBF System Filter Maintenance Aid (FMA)

Bell 205A1, UH-1H Donaldson IBF Compatible with ‘Eagle Single’ Conversion

Eagle Copters’ ‘Eagle Single’ can be equipped with the Donaldson IBF System

For Maximum Engine Protection

Bell 205A1, UH-1H Bell 205/UH-1H, Huey II IBF System

Current AFS Operators ● U.S. Department of State Air Wing – Worldwide (Afghanistan, Pakistan) ● Cal Fire/California Dept. of Forestry – California ● Vancouver Island Helicopters – Canada/Worldwide ● Coast to Coast Helicopters – Canada ● Custom Helicopters – Canada ● Day Aviation – Canada ● Great Slave Helicopters – Canada ● Heli-Excel – Canada ● Kachina Aviation – Idaho/Nationwide ● Pacific Valley Aviation - California ● PJ Helicopters – California/Nationwide ● San Diego Sheriff Air Unit – California ● Summit Aviation – Virginia/Nationwide ● Mustang Helicopters – Canada ● National Research Council – Canada ● Pacific Western Helicopters – Canada ● Prism Helicopters – Canada ● Kern County Fire Dept. – California ● Kern County Sheriff – California ● Colombian National Police – Colombia ● Royal Thai Air Force – Thailand ● Iraqi Air Force – Iraq ● Yemeni Air Force – Yemen ● Georgian Air Force – Georgia ● Yellowhead Helicopters – Canada ● Bell Helicopter – Ozark, Alabama

Bell 205A1, UH-1H

Aerospace Filtration Systems, Inc. 17891 Chesterfield Airport Rd.

Chesterfield, MO 63005

Sales and Marketing (636) 300-5267 Fax 636-300-5205

www.donaldsonaerospace-defense.com/industries/rotorcraft

Install Before Flight™

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