SUMMARY The data given in thirteen NASA papers describing wind-tunnel tests on external-flow jet-augmented flaps are reviewed. Details are given of the configurations tested and the main results achieved. Some of the data is compared with theoretical work done in the UK in support of internally ducted jet-flap schemes. The application of jet-flap theory to the correlation of maximum lift coeffi...

This Report describe8 how the stresses in a wind tunnel corner section were investigated by means of a l/6 scale model. Roth the brittle coating technique and elevated temperature strain gauge8 were employed. lko separate tests were performed in which It was attempted to slmlate the thermal stresses and the pressure stresses respectively. Methods of overcoming 8ome interesting experimental prob...

By field investigation, it is found that the lower section of transmission tower body is the critical position for insuring tower’s integral stability under strong wind. For improving tower’s wind-resistant performance, the scheme of adding diaphragms at mid-height of diagonal members in lower tower body was proposed and its static effectiveness was researched by static loading tests. Taking th...

The goal of this thesis work has been to develop and manufacture an ice layer which was to be mounted on the tip of a scaled down wing model. The iced wing should be tested in a wind tunnel and aerodynamic comparisons should be made to the same wing without ice. The development of the ice was carried out as a modified product development process. The main differences are that there is no costum...

Citation: Whiteman ML, Fernández-Cabán PL, Phillips BM, Masters FJ, Bridge JA and Davis JR (2018) Multi-Objective Optimal Design of a Building Envelope and Structural System Using Cyber-Physical Modeling in a Wind Tunnel. Front. Built Environ. 4:13. doi: 10.3389/fbuil.2018.00013 Multi-Objective Optimal Design of a Building Envelope and Structural System Using Cyber-Physical Modeling in a Wind T...

Models that can be used to analyse the fuel consumption of auxiliary units in heavy vehicles are presented. With the purpose of evaluating the influence from various drive concepts and control principals, a model library is developed in the modelling language Modelica. The library contains a mixture of models developed from physical principles and models fitted to collected data. Modelling of t...

This paper discusses several technologies currently being investigated for use on low speed UAVs. This includes adaptive wing technology that controls separation via active changes in the camber, use of large scale surface roughness to control separation, plasma actuators to control stall and enhance lift, and inflatable wings that can be tailored using wing warping. Results from wind tunnel an...

The integration of nonlinear neural network methods with conventional linear regression techniques is demonstrated for representative wind tunnel force balance data modeling. This work was motivated by a desire to formulate precision intervals for response surfaces produced by neural networks. Applications are demonstrated for representative wind tunnel data acquired at NASA Langley Research Ce...

This paper presents the design and validation of a measurement system for aerodynamic characteristics of unmanned aerial vehicles. An aerodynamic balance was designed in order to measure the lift, drag forces and pitching moment for different airfoils. During the design process, several aspects were analyzed in order to produce an efficient design, for instance the range of changes of the angle...

This paper reports on the design, construction, Instrumentation and preliminary testing performed on the high-lift wing of the MARVELETTE aircraft in a two-dimensional wind tunnel. The wind tunnel,12 feet high and 2 feet 9 inches wide,was fitted over a section of the aircraft wing to the shrouded propeller at the rear of the vehicle. When operating with this arrangement, wind tunnel velocities ...