Projects can be repetitive tasks in specified periods of time and also it may involve some functions which are performed just once .However, in any project, managers and experts consider three basic and important goals: least time, lowest cost and best quality, so all efforts are directed toward achieving these basic goals. Statistics indicate that projects are either conducted on estimated time or delayed and rarely are delivered before due date. Even if an activity is completed earlier in implementation phase, its post requisite activity would not be performed due to resource constraints and unavailability or project manager’s mistakes in estimating right time for activities. According to planning for technology advances within next years and gaining independence in this engineering field, our country is not an exception to this rule and there are urgent needs of scattering and promoting wind tunnel technology in different types and velocities at university and industry level. Wind tunnels are available in both open and closed circuit modes and are classified into subsonic, transonic, supersonic and ultrasonic based on their speed, each of which are used for specific purposes and have their own unique advantages and disadvantages.
