Cal Poly
Sure, there are some things we can´t control.
Cal Poly’s next-generation CESTOL aircraft performing a short-field landing utilizing engine flow entrainment by circulation control flaps
several advantages in obtaining experimental measurements, these being: the oil interferometry will require less lighting in the large wind tunnel by having high power lights on the floor of the tunnel that can be more easily directed on the wing surface; the 70-element stationary array can be utilized to identify any hot spots created by the TPS units; and the smoke visualization will be easier to observe and record. Once the critical test points have been completed, the model will be returned to right side up and alpha (up to +20 to -5 deg.) and beta (+20 to -20 deg.) sweeps will be conducted at three different tunnel speeds. Only far-field acoustic measurements, aerodynamic forces and moments, and static pressure measurements will be conducted for this portion of the test allowing a significant number of test points to be investigated, thereby creating the data base for current and future CFD validation efforts. The major objective of this project is the generation of an open collection of wind tunnel data along with the development
and validation of predictive codes for the advanced poweredlift concepts of next-generation CESTOL aircraft. This research can be utilized subsequently to improve the capability of modeling these complex flows for future development. This effort will address the following topics: low-speed aerodynamic characteristics up to and beyond maximum lift via a combination of computational and experimental efforts; by doing so, obtain a more complete picture of the flow physics and acoustic characteristics of a low-noise hybrid wing-body aircraft; and, at the same time, provide noise signature modeling to analyze not just the noise generated by the vehicle, but also the noise footprint around the airport during takeoff and landing. In accomplishing this, the project will provide a very innovative and non-proprietary example of a highly complex windtunnel model, in addition to an optimized test plan, that can acquire large amounts of test data given limited tunnel time.
CONTACT Dr. David Marshall, California Polytechnic State University E-mail: ddmarsha@calpoly.edu 2009 | WIND TUNNEL INTERNATIONAL
But with Werum’s and SEA’s Wind Tunnel Control System WTCS you will playfully control your measurements. No matter if you are planning to build a new wind tunnel or modernize an existing one: With its modular structure WTCS can be easily integrated into existing or planned structures. Independent functional modules ensure that additional measurement systems or other equipment can be integrated at any time. Based on its core functions for measurement and configuration data management, test sequencing and control as well as error management WTCS enables you to set up a control system that can easily be adjusted to different tasks just by slightly changing the system configuration. Feel the tailwind for your projects with WTCS. Successful installations with renowed European manufacturers
For more information please visit www.werum.com or www.sea-gmbh.com
Werum Software & Systems AG 21337 Lueneburg, Germany Tel. +49 (0) 4131 8900-0 info@werum.com
S.E.A. Datentechnik GmbH 51147 Cologne, Germany Tel. +49 (0) 2203 6992-0 wtcs@sea-gmbh.com
105