This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Observations and Analyses of Natural Laminar Flow over a Nonlifting Airframe Surface
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 01, 1987 by SAE International in United States
Annotation ability available
In the last decade, significant aerodynamic and manufacturing progress has been made in the area of achieving natural laminar flow over practical swept and unswept lifting surfaces. Further significant reduction in total aircraft drag is predicted by achieving significant amounts of additional natural laminar flow also over fuselages and other nonlifting airframe components. To date, only limited experimental results are available that examine the applicability of laminar flow over nonaxisymmetric fuselage shapes. The paper presents details of a cooperative NASA/Cessna flight experiment using a light twin-engine propeller-driven aircraft, to investigate transition location and transition mode over the nonaxisymmetric fuselage forebody. A discussion is given of the transition-instrumentation layout and the planned flight-test matrix. Some transition location observations obtained thus far in this ongoing test program are compared with boundary-layer stability calculations for the fuselage forebody. Measurement of transition location and the extent of the transition process in varying freestream and propeller conditions in this test program will provide information on transition mechanisms and the significance of crossflow instability on transition over a practical nonaxisymmetric aircraft fuselage forebody at angles of attack and sideslip.
|Technical Paper||Wind Tunnel Investigations of a High Speed Stowed Rotor Aircraft|
|Technical Paper||Engineering Solutions for Circulation Control Applications|
|Technical Paper||THE MARK II LEARJET FROM CONCEPT TO CERTIFICATION|
CitationVijgen, P., "Observations and Analyses of Natural Laminar Flow over a Nonlifting Airframe Surface," SAE Technical Paper 871020, 1987, https://doi.org/10.4271/871020.
- George-Falvy, D.: “Effect of Pressurization on Airplane Fuselage Drag.” J. of Aircraft, Vol. 2, No. 6, 1965, pp. 531-537.
- Vijgen, P. M. H. W.; Dodbele. S. S.; Holmes, B. J.; and Van Dam, C. P.: “Effects of Compressibility on Design of Subsonic Natural Laminar Flow Fuselages.” AIAA 1th Applied Aerodynamics Conference. San Diego, June 1986. AIAA Paper 86-1825CP, accepted for J. of Aircraft.
- Obara, C. J.; Hastings, E. C.; Schoenster, J. A.; Parrott, T. L.; and Holmes, B. J.: “Natural Laminar Flow Flight Experiments on a Turbine Engine Nacelle Fairing,” AIAA paper 86-9756, Las Vegas. April 1986.
- Dodbele, S. S.; Van Dam, C. P.; Vijgen, P. M. H. W., and Holmes, B. J.: “Shaping of Airplane Fuselages for Minimum Drag.” AIAA 24th Aerospace Science Meeting, Reno, January 1986. AIAA Paper 86-0316, to be published in J. of Aircraft. April 1987.
- Holmes, B. J.; Obara, C. J.; Martin, G. L., and Domack, C. S.: “Manufacturing Tolerances for Natural Laminar Flow Airframe Surfaces.” 1985 SAE General Aviation Aircraft Meeting and Exposition, Wichita, Kansas. SAE Paper 850863. April 1985.
- Williams, K. L.; Vijgen, P. M. H. W.; and Roskam, J. R.: “Natural Laminar Flow and Regional Aircraft.” 1985 SAE General Aviation Aircraft Meeting and Exposition, Wichita, Kansas. SAE Paper B50861. April 1985. Published in SAE Transactions, Vol. 4, 1985.
- Williams, K. L.; and Roskam, J. R.: “Natural Laminar Flow and Regional Aircraft: a Performance Assessment.” Report KU-FRL-6131-5, University of Kansas Center for Research, Inc., July 1985.
- Carmichael, B. H.: “Underwater Vehicle Drag Reduction Through Choice of Shape.” AIAA Second Propulsion Joint Specialist Conference, June 1966. AIAA Paper 66-657.
- Boltz, F. W.; Kenyon, G. C.; and Allen, C. Q.: “The Boundary Layer Transition Characteristics of Two Bodies of Revolution. A. Flat Plate, and an Unswept Wing in a Low-Turbulence Wind Tunnel,” NASA Technical Note D-309. April 1960.
- Groth, E. E.: “Boundary-Layer Transition of Bodies of Revolution.” Northrop Aircraft Co., Report No. NAI-57-1162, BLC-100, July 1957.
- Dodbele, S. S.: “Effects of Forebody Geometry on Subsonic Laminar Boundary-Layer Stability.” Paper to be presented at 5th International Conference on Numerical Methods in Laminar and Turbulent Flow, Montreal, Canada, June 1987.
- Meier, H. U.; and Kreplin. H.P.: “Experimental Investigations of Boundary-Layer Transition and Separation on a Body of Revolution.” Z. F. Flugwiss. u. Weltraumforsch., Vol. 4, 1980, pp 65-71.
- Meier, H. U.; and Cebeci, T.: “Flow Characteristics of a Body of Revolution at Incidence.” Paper No. 10 in Third Symposium on Numerical and Physical Aspects of Aerodynamic Flows, California State University, Long Beach, California, January 1985.
- Kerschen, E. J.: “Boundary-Layer Receptivity and Laminar Flow Airfoil Design.” Symposium on Natural Laminar Flow and Laminar Flow Control Research, March 1987, to be published in NASA CP, 1987.
- Peterson, J. B., Jr.; and Horton, E. A.: “An Investigation of the Effect of a Highly Favorable Pressure Gradient on Boundary-Layer Transition as Caused by Various Types of Roughnesses on a 10-Foot-Diameter Hemisphere at Subsonic Speeds.” NASA Memorandum 2-8-59L. April 1959.
- Von Doenhoff. A. E.; and Braslow. A. L.: “The Effect of Distributed Surface Roughness on Laminar Flow”, in Lachmann, G.V., ed.: Boundary Layer and Flow”, Control, Its Principles and Applications, Pergamon 1961.
- Wentz, W. H., Jr.; Ahmed, A.; and Nyenhuis, R.: “Further Results of Natural Laminar Flow Flight Test Experiments.” 1985 SAE General Aviation Aircraft Meeting and Exposition, Wichita, Kansas. SAE Paper 850862, April 1985
- Croom, C. C.; Manuel, G. S.; and Stack, J. P.: “In-Flight Detection of Tollmien-Schlichting Instabilities in Laminar Flow.” 1987 SAE General Aviation Aircraft Meeting and Exposition, Wichita, Kansas. SAE Paper 871016, April 1987.
- Maskew, B.; “prediction of Subsonic Aerodynamic Characteristics - A Case for Low-Order Panel Methods,” J. of Aircraft, Vol. 19, No. 2, 1982, pp. 157-163.
- Vijgen, P. M. H. W.; and Holmes, B. J.: “Experimental and Numerical Analyses of Laminar Boundary-Layer Flow Stability over an Aircraft Fuselage Forebody.” Symposium on Natural Laminar Flow and Laminar Flow Control Research, March 1987. To be published in NASA CP, 1987.
- Iyer, V.; Radwan. S.; and Harris, J. E.: “Numerical Solutions of the Compressible 3-D Boundary-Layer Equations for Aerospace Configurations with Emphasis on LFC.” Symposium on Natural Laminar Flow and Laminar Flow Control Research to be published in NASA CP, 1987.
- Cooke, J. C.; and Hall, M. G.: “Boundary-Layers in Three Dimensions,” Progress in Aeronautical Sciences, Volume 2, Boundary Layer Problems, Ed. by Ferri, A. et. al., Pergamon, 1962.
- Harris, J. E.; and Blanchard, D. K.: “Computer Program for Solving Laminar, Transitional, or Turbulent Compressible Boundary-Layer Equations for Two-Dimensional and Axisymmetric Flow.” NASA TM-83207, Feb. 1982.
- Srokowski, A. J.; and Orszag, S. A.: “Mass Flow Requirements for LFC Wing Design.” AIAA Paper 77-1222, 1977.
- Hefner, J. N.; and Bushnell, D. M.: “Status of Linear Boundary-Layer Stability Theory and the en Method, with Emphasis on Swept-Wing Applications.” NASA Technical Paper 1645, Feb. 1980.
- Barton, C. K.; and Mixson, J. S.; “Characteristics of Propeller Noise on an Aircraft Fuselage.” J. of Aircraft, Vol. 18, No. 3, March 1981, pp. 200-205.