Fokker Aircraft B.V. Schiphol telephone: telex: FMHS NL telex spares: AMFO NL fax:

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2 Fokker Aircraft B.V. Schiphol telephone: telex: FMHS NL telex spares: AMFO NL fax: Fokker Aircraft B.V.. P.O. box LI Schiphol. Holland your letterlreference our reference date December 1, 1993 Subiect: Final reuort (TP07T) of GaRTEUR AD (AG121 Dear Sir, Enclosed is the final report (TP077) entitledgc!omparative investigation of predictive capability of aeroacoustic methods for single rotation propellerfif AD(AG12). Best regards, (Dr. S.L. Sarin): domiciled at Amsterdam Algemene Bank Nederland N.V., Amsterdam, no trade register Haarlem no trade register Amsterdam no Our General Conditions of Purchase are deposited at address: Schipholdiik 231, Schiphol-Oost the Chamber of Commerce in Amsterdam under depot no. 2097

3 GROUP FOR AERONAUTICAL RESEARCH AND TECHNOLOGY IN EUROPE Gmaaua F,NcE. NmERMNDs. ORIGINAL : ENGLISH DATE ; :', L'g, is53 GARTEUR TP NO. 077 GARTEUR LIMITED FINAL REPORT OF GARTEUR AD (AG 12) COMPARATIW INVESTIGATION OF PREDICTIVE CAPABILITY OF AEROACOUSTIC METHODS FOR SINGLE ROTATION PROPELLERS S.L. SARIN, FOKKER (ED.) S. Canard-Caruana, ONERA D. Lohmann, DLR P. Cloarec, Aerospatiale S. Meijer, FFA R.P. Do~~nelly, DAP J.B.H.M. Schulten, NLR The present repon is distributed on a limited basis, for the information of the listed organizmatlons only; consequentty filing in any central library open to others, and citation in accession lists, or as literinure rejerence, are prohibited. Prepared under the auspices of the Group of Responsables for Aerodynamics (AD) of the Group for Aeronautical Research and Technology in Europe (GARTEUR). GARTEUR LMJTED

4 GARTEUR LIMITED 2 GARTEUR TP 077 DISTRIBUTION LIST 1 copy for each participating organisation : Mr. R.P. Donnelly DAP Mr. S. Meijer FF A Dr. D. Lohmann DLR Dr. J.B.H.M. Schulten NLR Mme. S. Canard-Caruana ONERA Dr. S.L. Sarin Fokker Mme. P. Cloarec AS 1 copy for each member of the Group of Responsables for Aerodynumics informution purposes only) Dr. B. Oskam NLR Dr. I.A. Lind FFA Mr. J.B. Jamieson DRA Prof. Dr. G.E.A. Meier DLR Mr. B. Schofield BAe Mr. J.J. Thibert ONERA Prof. Dr.-Ing. P. Thiede DLR 4 copies for each Head of National Delegation informution purposes only) Dr. H.A. Hertrich BMFT Germany Mr. J. van Houwelingen NLR The Netherlands Mr. J. Bouchet DRET France Mr. L.B. Persson FF A Sweden 1 copy for each Ekecutlive Committee member : (for infom'on purposes only) Prof. F.J. Abbink NLR Mr. A. Gustafsson FF A Mr. P.G. Wilby DRA Mr. J.M. Duc Dr. K.O. Pfeiffer ONERA DLR 1 copy secretary GARTEUR : (for the GARTEUR central file) Mr. G. Gruber DLR GARTEUR LIMITED

5 GARTEUR LIMITED DISTRIBUTION LIST (continued) 1 copy to the following persons in each organization conmnmbutl'ng in AD (AG12): Dr. H. Kiirner Dr. H.H. Heller Dr. W. Neise DLR DLR DLR Dr. J. Green Mrs. M.E.Wood ARA ARA Dr. P. Giiransson Dr. I.A.A. Lindblad Dr. I.U. Borchers Dr. H.J. Hackstein FFA FF A Dornier Dornier Mr. P. Guyot Mr. J.L. Parant Mr. P. Lempereur Mr. Y. Vigneron Mr. C. Castan Dr. R. Roos Dr. J.M. Bouquet Dr. G. Fournier Dr. S. Uwy Mr. G. Rahier ONERA ONERA ONERA ONERA Mr. D. Berge SNECMA Prof. E. Obert Mr. D.A. Cornelisse Mr. P. J. van der Heul Mr. A. Joustra Mr. J. van Hengst Mr. A. Kwakernaak Mr. J. Bouwmeester Mr. E. Gordijn Fokker Fokker Fokker Fokker Fokker Fokker Fokker Fokker Prof. J.W. Slooff NLR Dr. H.H. Brouwer NLR Mr. L.E. Baker DAP Mr. J.D. Kemp DAP Mr. N. Scrase DAP Dr. A.J. Kempton Rolls-Royce GARTEUR LIMITED

6 GARTEUR LIMITED CONTENTS DISTRIBUTION LIST LIST OF TABLES LIST OF FIGURES EXECUTIVE SUMMARY ACKNOWLEDGEMENTS 1 INTRODUCTION 2 RESPONSIBILITIES AND STRATEGY 2.1 Aerodynamics 2.2 Acoustics 2.3 Report 2.4 Inventory of future work 3 AERODYNAMIC AND ACOUSTIC METHODS 3.1 Aerodynamic Methods DLR (LBS Method) FFA (Euler Code) NLR (Strip Theory) 3.2 Acoustic Methods ASIDAPIDLRIFFA NLR ONERA 4 TEST CASES FOR VALIDATION PURPOSES 4.1 R311 propeller in the ARA transonic wind tunnel 4.2 Hartzell 847 D4 propeller in the DNW anechoic wind tunnel 5 COMPARISON WITH EXPERIMENTAL DATA 5.1 Aerodynamic Predictions R31 1 propeller (FFAIDAP) GARTEUR LIMITED

7 GARTEUR LIMITED Hartzell Propeller (DLRINLR) Acoustic Predictions R311 Propeller Predictions with FFA Aerodynamic Input Hartzell Propeller Predictions with DLR/NLR Aerodynamic Input 29 6 INVENTORY OF FUTURE WORK 6.1 Non-linear effects 6.2 Unsteady loading 7 CONCLUSIONS 30 8 RECOMMENDATIONS 31 9 REFERENCES 32 TABLES FIGURES GARTEUR LIMITED

8 GARTEUR LIMITED LIST OF TABLES Table Title 1. Available computational methods 2. R311 Wind tunnellpropeller operating conditions 3. Hartzell 847D-4 propeller operating conditions 4. R311 propeller aerodynamic results and comparison to wind tunnel data 5. Hartzell propeller aerodynamic results and comparison to wind tunnel data 6. Hartzell propeller - Ranking of methods GARTEUR LIMITED

in the DNW-HST High Speed Wind Tunnel

Nationaal Lucht- en Ruinitevaartlaboratorium National Aerospace Laboratory NLR -. GARTEUR LIMITED Test report of the GARTEUR A028 Model AS28 in the DNW-HST High Speed Wind Tunnel F.L.A. Ganzevles and D.