Artificial Thickening of a Transonic Boundary Layer in the Presence of a Pressure Gradient Associated with a Boundary Layer Ingestion ConceptBoundary layer ingestion is an aeropropulsive concept associated with a propulsion airframe integration technique that integrates viscous aerodynamics into a propulsion system to achieve more efficient flight. The effectiveness of this concept is heavily dependent on how much of the boundary layer is being ingested into the propulsor. Scaling this concept for transonic wind tunnel testing is often plagued with blockage issues and requires a modification to the model dimensions such as fuselage length and diameter and wingspan. To simulate the boundary layer for these modified models requires a manipulation of the boundary layer height to achieve the appropriate ratio of boundary layer to propulsor inlet diameter or height. This paper will focus on 15 different transonic boundary layer manipulators to achieve varying turbulent boundary layer heights for a representative single-aisle transport utilizing Boundary Layer Ingestion.
Document ID
20200003091
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Gregory S Jones (Langley Research Center Hampton, Virginia, United States)
William Milholen (Langley Research Center Hampton, Virginia, United States)
Alaa Elmiligui (Langley Research Center Hampton, Virginia, United States)
Michael Bozeman (Langley Research Center Hampton, Virginia, United States)
Christopher Cramer (Sierra Lobo (United States) Fremont, Ohio, United States)
Mark Cagle (Langley Research Center Hampton, Virginia, United States)
Date Acquired
April 29, 2020
Publication Date
January 6, 2020
Publication Information
Publisher: American Institute of Aeronautics and Astronautics