The effort here has been to compile and present collectively the concepts of Low Speed Wind Tunnel. I have tried to make it explanatory with help of large number of figures and pictures whose sources have been mentioned under them. I have tried to incorporate as much latest information as available via Internet although the backbone of the work is ‘Wind Tunnel Technique’ by R.C. Pankhurst, National Physical Laboratory, Teddington, England. It includes a very descriptive documentation of the Wind Tunnel and in a very organized manner.This work was done as an assignment for one of the undergrad courses. Information may not be very current but the general principles remain the same nevertheless.
Wind tunnel testing is the technical support of any major development process involving aerodynamics. It is used for aircraft, helicopters,cars, trains, and laboratory research.It is estimated that it took the Wright Brothers less than 20 hours of wind tunnel testing to produce their successful Flyer (although their empirical research was a life time achievement). The Douglas DC-3, perhaps the most successful commercial aircraft ever built, required about 100 hours of wind tunnel testing. Wind tunnel time has been steadi...