Drag Forces

Drag Forces

• The goal of scientific study and practical application is to design the perfect body shape in order to keep drag low. The drag coefficient for arbitrarily shaped bodies can only be determined reliably by experimentation.
• The experimental unit used in the aerodynamics trainer allows drag to be measured in various models so as to determine the respective drag coefficients. In the measuring section, a model is used as a drag body. The forces occurring in the air flow are measured with a beam scale with movable weight. When conducting the experiment with a cylinder, a Pitot tube can be used to record a pressure distribution of the surrounding flow.
• The drag can be measured indirectly via the pulse rate. The Pitot tube, movable obliquely to the direction of flow, allows pressures to be recorded so as to determine the velocity profile downstream of the cylinder and thus to gauge the socalled wake depression.

• Determining drag forces on models immersed in a flow
•  Recording the pressure distribution on models immersed in a flow
• Recording the velocity profit for measuring the wake depression behind the cylinder immersed in a flow
• Accessories for the aerodynamics trainer
• Models: plate, cylinder and aerofoil model as drag body
• Cylinder with additional pressure measuring point
• Pitot tube with horizontal adjustment for measuring the total pressures Technical Data
• Pitot tube
• Diameter: 1,1mm
• Horizontal adjustment: 50...0...50 mm
• Measuring section: cross-section 50 x 100 mm
• Angle scale: -40...40
• Weights: 1 x 10 g, 1 x 40 g
• Drag body
• Plate: L x W: 45 x 15 mm,
• Thickness: 1mm
• Cylinder: D x H: 15 x 45 mm
• Aerofoil model: L x W x H: 100 x 15 x 45 mm.

• LxWxH: 330 x 270 x 220 mm.
• Weight: approx. 16 kg.