Actual dimension of the test airfoil is 30.5 cm in length. Chord is also 30.5 cm. Radius from hub to center of airfoil is 40.0 cm. Assumed max. coeff. of lift is 1.4 Air density= 1.225 kg/m^3
ang. vel.= 1800*(2*pi)/60= 188.5 rad/sec tang. vel.= 0.4*188.5= 75.4 m/s
lift force =...
The test apparatus, omitting the base, the electric motor drive and belts from motor pulley to shaft pulley that is shown on the left side. It turns the rotor that has the test airfoil at one end (top) and a symmetrical airfoil, having the same weight, at the other end (bottom). The test airfoil...
The apparatus is essentially two radial arms at about 1 foot separation, with an axle thru their centers and keyed to the arms and going thru bearings in a supporting frame at each end. At one end of the arms is an airfoil spanning the arms but at the other end is a symmetrical airfoil (no...
My preliminary scheme is to support the axle of the wheel at one end by a standard bearing in solid frame structure and the other end going thru a slot in the frame to allow vertical movement and then support it via a pressure type load cell that is connected rigidly to the frame. The four wires...
I have no experience with accelerometers and only with strain gauge data acquisition (>50 years ago). I have never bot such equipment personally. My laptop has USB ports or ethernet with an adaptor. I haven't programmed in 30 years (in Basic) and hope it is not necessary. I expect the hardware...
Most of the information you request is not necessary to solve the problem. Essentially, there is a load sensor device and the load on it varies in a sinusoidal pattern with a frequency of about 30 hertz. I want to see the load variation as a sinusoidal wave on the screen of my laptop and be able...
The apparatus consists of a U-shaped frame with a shaft going between the free ends. On the shaft is a wheel containing wing shapes. Under the U I want to place a load cell of some kind and rig it to my laptop so I can see the variation in net radial load as the wheel rotates at about 30 hertz...
The apparatus consists of a U-shaped frame with a shaft going between the free ends. On the shaft is a wheel containing wing shapes. Under the U I want to place a load cell of some kind and rig it to my laptop so I can see the variation in net radial load as the wheel rotates at about 30 hertz...
how do I measure a rapidly and cyclically varying vertical force
I have a rotating mass that generates centrifugal and aerodynamic forces. I want to see the variation thru one rotation at steady state. how do I measure the vertical force generated and display it on my computer screen, with a...