The Focke‐Wulf Wind‐Tunnel: A Description of a New Commercial Experimental Apparatus Installed in Germany

THE constant effort towards improvement of the aerodynamic design of aeroplanes which is essential to meet the demand for higher efficiency and better properties, requites increasingly close collaboration between design office, factory, and aerodynamic laboratory. With the increasing need for rapid production, it is no longer possible to devise a comprehensive programme of tests embodying all the flow problems arising in connection with a new design, and entrust the execution of these to a research laborator serving the industry generally. If aerodynamic research is to be brought to bear directly on the particular objective in each case, it is indispensable that there should be inter‐working in point of time and in point of technical object, between design office, factory and laboratory.