Part 2: Preparation for Wind Tunnel Model Testing and Verification of Cal Poly's AMELIA 10 Foot Span Hybrid Wing-Body Low Noise CESTOL Aircraft

Abstract

A collaboration between California Polytechnic Corporation with Georgia Tech Research Institute (GTRI) and DHC Engineering worked on a NASA NRA to develop predictive capabilities for the design and performance of Cruise Efficient, Short TakeOff and Landing (CESTOL) subsonic aircraft. The focus of this work presented in this paper gives details of a large scale wind tunnel effort to validate predictive capabilities for this NRA for aerodynamic and acoustic performance during takeoff and landing. The model, Advanced Model for Extreme Lift and Improved Aeroacoustics (AMELIA), was designed as a 100 passenger, N+2 generation, regional, cruise efficient short takeoff and land (CESTOL) airliner with hybrid blended wing-body with circulation control. AMELIA is a 1/11 scale with a corresponding 10 ft wing span. The National Full-Scale Aerodynamic Complex (NFAC) 40 ft by 80 ft wind tunnel was chosen to perform the large-scale wind tunnel test in the scheduled to start summer of 2011. The NFAC was chosen because both aerodynamic and acoustic measurements will be obtained simultaneously, the tunnel is large enough that the downwash created by the powered lift will not impinge on the tunnel walls, and the schedule and cost fit into Cal Poly's time frame and budget. Several experimental measurement techniques will be used to obtain the necessary data to validate predictive codes being developed as apart of this effort: stationary microphones will be used to obtain far-field acoustic measurements including a 48 element phased array, the Fringe-Image Skin Friction (FISF) technique will be used to measure the global skin friction on the wing, and the a micro flow measurement device will measure the velocity profiles in the in the boundary and shear layers is still in development and presented in this paper.

Investigation of the Unsteady Behavior of a Circulation Control Wing Using Computational Fluid Dynamics

“…Although this paper is focused on the computational modeling of AMELIA, it is important to highlight several features of the model as they define computational boundaries and the like. An in depth description of the experimental effort of this project is provided in Jameson et al 9,10 . Figure 3 shows a cut-away view of the wind tunnel model and internals, highlighting the leading and trailing edge circulation control slots, and TPS units.…”

Flow Uniformity Calibration of AMELIA's Circulation Control Wings

“…For more information on the aircraft design, wind tunnel model, wind tunnel test, results, and project as a whole see ref. [1][2][3][4].…”

Acoustic Surveys of a Scaled-Model CESTOL Transport Aircraft in Static and Forward Speed Conditions

“…HE Cruise-Efficient Short Take-off and Landing (CESTOL) configuration concept was developed to meet future requirements of reduced field length, noise, and fuel burn by researchers at Cal Poly, San Luis Obispo 1,2 and Georgia Tech Research Institute 3,4 . The novel configuration includes a leading-and trailing-edge circulation control wing (CCW) with over-wing podded turbine propulsion simulation (TPS).…”