34 Partners • Lead VERTAIR (EEIG) • Duration 03.04 – 08 · AERODAYS Wien 2006 V. Kloeppel, EUROCOPTER Workpackage 4 cont’d – Gear Box Tests, Materials Objectives: Proof

AERODAYS AERODAYS WienWien 20062006 V. Kloeppel, EUROCOPTERV. Kloeppel, EUROCOPTER

• 34 Partners

• Lead VERTAIR (EEIG)

• Duration 03.04 – 08.08


T

Goals:Goals:

• Cabin vibrations below 0,05 g corresponding to jet smooth ride comfort, for the same flight regime area.

• Acoustic footprint areas reduced between 30% and 50% depending on the flight condition

• Cabin noise levels below 75 dBA, similar to airliner cabins, for normal cruise

• A reduction of fuel consumption by 6 % in high speed flight.


WorkpackageWorkpackage 2 2 –– Noise abatement Noise abatement flight proceduresflight procedures -- HELENAHELENA

ObjectivesObjectives::Establish a code to predict helicopter noise footprints & to Establish a code to predict helicopter noise footprints & to support low noise flight proceduressupport low noise flight procedures

Achievements:Achievements:First version of HELENA software delivered in November 2005.First version of HELENA software delivered in November 2005.

CFD

Meas

FPR

Hemisphere

Data handler

Data handler ‘Gauss’

HELENA (hemisphere mode)

HELENA (HESOPE mode)

Hemisphere

Stage1

Stage2

Stage 3

Sourcebreakdown

depropagation


Objectives:Objectives:Demonstrate low noise procedures in flight Demonstrate low noise procedures in flight (Test helicopters: EC130, EC135 and A109)(Test helicopters: EC130, EC135 and A109)

Achievements:Achievements:First flight test campaigns in final preparation statusFirst flight test campaigns in final preparation status

WorkpackageWorkpackage 2 cont’d2 cont’d –– FlightFlight TestsTests


WorkpackageWorkpackage 3 3 –– Engine noise Engine noise reductionreduction

Objectives:Objectives:Improve performance & noise level of EC135 engine Improve performance & noise level of EC135 engine Test new configuration on ground & in flight Test new configuration on ground & in flight

AchievementsAchievementsSuccessful PDR (09.05) Successful PDR (09.05) detailed design phasedetailed design phaseAerodynamic/acoustic/mechanical studies completed Aerodynamic/acoustic/mechanical studies completed CDR performedCDR performed


Objectives: Objectives: Comfortable cabin noise levels by active / passive treatmentComfortable cabin noise levels by active / passive treatmentDemonstration on A109, EC135, Demonstration on A109, EC135, SokolSokol

Achievements: Achievements: EC135 transmission loss measurements conductedEC135 transmission loss measurements conductedA109/EC135 Transmission Path Analysis conductedA109/EC135 Transmission Path Analysis conducted

WorkpackageWorkpackage 4 4 Cabin noise Cabin noise reductionreduction


WorkpackageWorkpackage 4 cont’d 4 cont’d –– GearGear Box Tests, MaterialsBox Tests, Materials

Objectives:Objectives:Proof benefits of gearbox modifications & active suspension Proof benefits of gearbox modifications & active suspension Provide database of standard passive materials,Provide database of standard passive materials,

Achievements:Achievements:Reference trials of EC135 gearbox completed (ZFL).Reference trials of EC135 gearbox completed (ZFL).Acoustic characterisation/modelling of EC135 & A109 gearbox compAcoustic characterisation/modelling of EC135 & A109 gearbox completed leted Active gearbox struts under laboratory conditions successfully tActive gearbox struts under laboratory conditions successfully tested at AGUSTAested at AGUSTAFirst results for novel sound proofing materials & configurationFirst results for novel sound proofing materials & configurations attaineds attained(ONERA, EADS, U Oldenburg)(ONERA, EADS, U Oldenburg)


WorkpackageWorkpackage 5 Rotor Noise Control 5 Rotor Noise Control

Objectives:Objectives:Demonstrate feasibility of Demonstrate feasibility of distributed actuation for distributed actuation for noise & vibration reduction noise & vibration reduction

Achievements: Achievements: PDR on design & layout of PDR on design & layout of actuation system, actuation system, Noise, vibration and Noise, vibration and performance benefit & performance benefit & optimisation predictedoptimisation predictedActuation system testedActuation system testedPiezoelectricPiezoelectric twisttwist& & ActiveActive TrailingTrailingEdge Edge demonstrateddemonstratedon on prototypeprototype levellevel


Blade Vortex Interaction

WorkpackageWorkpackage 5 cont’d 5 cont’d –– PredictionPrediction of blade of blade vortexvortex interactioninteraction


WorkpackageWorkpackage 5 cont’d 5 cont’d –– Laboratory DemonstrationLaboratory Demonstration


Future Activities within the Future Activities within the different Work Packages different Work Packages

2.2. Edit noise prediction code HELENA & Edit noise prediction code HELENA & demonstrate low noise flight procedures demonstrate low noise flight procedures

3.3. Modify EC135 engine & test it on ground / in Modify EC135 engine & test it on ground / in flightflight

4.4. Apply active & passive means to gearboxes & Apply active & passive means to gearboxes & cabins & test itcabins & test it

5.5. Produce & test model blade & full scale blade Produce & test model blade & full scale blade segments with distributed actuation segments with distributed actuation

Documents

34 Partners • Lead VERTAIR (EEIG) • Duration 03.04 – 08 · AERODAYS Wien 2006 V. Kloeppel, EUROCOPTER Workpackage 4 cont’d – Gear Box Tests, Materials Objectives: Proof