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Flight Investigation of Natural Laminar Flow on the Bellanca Skyrocket II
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Abstract
Two major concerns have inhibited the use of natural laminar flow (NLF) for viscous drag reduction on production aircraft. These are the concerns of achieveability of NLF on practical airframe surfaces, and maintainability in operating environments. Previous research in this area left a mixture of positive and negative conclusions regarding these concerns. While early (pre-1950) airframe construction methods could not achieve NLF criteria for waviness, several modern construction methods (composites for example) can achieve the required smoothness. This paper presents flight experiment data on the achieveability and maintainability of NLF on a high-performance, single-propeller, composite airplane, the Bellanca Skyrocket II. The significant contribution of laminar flow to the performance of this airplane was measured. Observations of laminar flow in the propeller slipstream are discussed, as are the effects of insect contamination on the wing. These observations have resulted in a new appreciation of the operational feasibility for achieving and maintaining NLF on modern airframe surfaces.
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Citation
Holmes, B., Obara, C., Gregorek, G., Hoffman, M. et al., "Flight Investigation of Natural Laminar Flow on the Bellanca Skyrocket II," SAE Technical Paper 830717, 1983, https://doi.org/10.4271/830717.Also In
References
- Loftin, L. K., Jr "Subsonic Aircraft: Evolution and the Matching of Size to Performance," NASA RP 1060 1980
- Holmes, B. J. Obara, C. J. "Observations and Implications of Natural Laminar Flow on Practical Airplane Surfaces," ICAS Paper 82- 5.1.1 1982
- "Final Report on LFC Aircraft Design Data Laminar Flow Control Demonstration Program," Northrop Corp. Rep. NOR 136 (Contract AF 33657-13930) 1967
- Bushnell, D. M. Tuttle, M. H. "Survey and Bibliography on Attainment of Laminar Flow Control in Air Using Pressure Gradient and Suction," NASA R P 1035 vol. I 1979
- Payne, H. E. "Laminar Flow Rethink- Using Composite Structure," SAE Paper 760473 1976
- Gregorek, G. M. Hoffman, M. J. Payne, H. E. Harris, J. P. "Drag Evaluation of the Bellanca Skyrocket II," SAE Paper 770472 1977
- Gregorek, G. M. Hoffman, M. J. Freuler, R. J. Holmes, B. J. Obara C. J. "Flight Performance of a Natural Laminar Flow Airfoil on a Composite Single Engine Business Airplane," AIAA Paper 83-0055 1983
- Pringle, G. E. Main-Smith, J. D. "Boundary Layer Transition Indicated by Sublimation," Brit. RAE Tech. Note AERO No. 1652 (ARC 8892) 1945
- Main-Smith, J. D. "Chemical Solids as Diffusible Coating Films for Visual Indication of Boundary Layer Transition in Air and Water," R&M No. 2755, Brit. A.R.C 1950
- Owen, P. R. Ormerod, A. O. "Evaporation From the Surface of a Body in an Airstream," R&M No. 2875 Brit. A.R.C 1951
- Holmes, B. J. "Low Speed Airspeed Calibration Data for a Single Engine Research Support Airplane NASA TM 81832 1980
- Braslow, A. L. Knox, E. C "Simplified Method for Determination of Critical Height of Distributed Roughness Particles for Boundary layer Transition at Mach Numbers from 0 to 5," NACA TN 4363 1958
- Smith, F. Higton, D. J. "Flight Tests on a King Cobra FZ 440 to Investigate the Practical Requirements for the Achievement of Low Profile Drag Coefficients on a "Low Drag" Aerofoil," R&M No. 2375, Brit. A.R.C 1950
- Stevens, W. A. Goradia, S. H. Braden, J. A. "Mathematical Model for Two-Dimensional Multi-Component Airfoils in Viscous Flow," NASA CR-1843 1971
- Hermann Schlichting, "Boundary Layer Theory," Sixth Edition McGraw Hill New York 1968
- Hefner, J. N. Bushnell, D. M. "Status of Linear Boundary Layer Stability Theory and the en Method, With Emphasis on Swept-Wing Applications," NASA TP 1645 1980
- Viken, J. K. "Aerodynamic Design Considerations and Theoretical Results for a High Reynolds Number Natural Laminar Flow Airfoil," Masters Thesis, George Washington University 1983
- Srokowski, A. J. Orszag, S. A. "Mass Flow Requirements for LFC Wing Design," AIAA Paper 77-122 1977
- Abbott, I. H. von Doenhoff, A. E. Stivers, L. S., Jr "Summary of Airfoil Data," NACA TR 824 1945
- Beasley, W. P. McGhee, R. J. "Experimental and Theoretical Low-Speed Aerodynamic Characteristics of NACA 651-213, a = 0.50, Airfoil," NASA TM X-3160 1975
- Young, A. D. Morris, D. E. "Note on Flight Tests on the Effect of Slipstream on Boundary Layer Flow," R&M No. 1957, Brit. A.R.C 1939
- Young, A. D. Morris, D. E. "Further Note on Flight Tests on the Effect of Slipstream on Boundary-Layer Flow," RAE Rep. No. B.A. 1404b 1939
- Hood, M. J. Gaydos, M. E. "Effects of Propellers and Vibration on the Extent of Laminar Flow on the NACA 27-212 Airfoil," NACA ACR (W R L-784) 1939
- Wenzinger, C. J. "Wind Tunnel Investigation of Several Factors Affecting the Performance of a High Speed Pursuit Airplane With Air-Cooled Engine," NACA ACR 1941
- Zalovcik, J. A. "Flight Investigation of the Boundary Layer and Profile Drag Characteristics of Smooth Wing Sections on a P-47D Airplane," NACA WR L-86 1945
- Zalovcik, J. A. Skoog, R. B. "Flight Investigation of Boundary Layer Transition and Profile Drag of an Experimental Low-Drag Wing Installed on a Fighter-Type Airplane," NACA WR L- 94 1945
- Eppler, R. Somers, Dan M. "A Computer Program for the Design and Analysis of Low Speed Airfoils," NASA TM 80210 1980
- Emmons, H. W. "Laminar Turbulent Transitions in a Boundary Layer," Part I, J. Aero. Sci 18 7 1952
- Boermans, L. M. M. Selen, H. J. W. "Design and Tests of Airfoils for Sailplanes With an Application to the ASW-19B," ICAS Paper 82-5.5.2 1982