Aeromechanical experimentation (wind tunnel tests)
The following report endeavors to show that aeromechanical experimentation has become an important aid to theory.
WIND TUNNELS - MARGOULIS - CARBON DIOXIDE (FRENCH)↗
Engineering topics
Katzmayr, R
Publications and source records attributed to Katzmayr, R.
Deflection of Propeller Blades While Running
The forces acting on the blades of a propeller proceed from the mass of the propeller and the resistance of the surrounding medium. The magnitude, direction and point of application of the resultant to the propeller blade is of prime importance for the strength calculation. Since it was obviously impracticable to bring any kind of testing device near the revolving propeller, not so much on account of the element of danger as on account of the resulting considerable disturbance of the air flow, the deflection in both cases was photographically recorded and subsequently measured at leisure.
PROPELLERS - DEFLECTION↗
Effect of periodic changes of angle of attack on behavior of airfoils
This report presents the results of a series of experiments, which gave some quantitative results on the effect of periodic changes in the direction of the relative air flow against airfoils. The first series of experiments concerned how the angle of attack of the wing model was changed by causing the latter to oscillate about an axis parallel to the span and at right angles to the air flow. The second series embraced all the experiments in which the direction of the air flow itself was periodically changed.
AIRFOILS - ANGLE OF ATTACK↗
The aerodynamical laboratory of the Vienna Technical High School
We will give here only a short explanation of the operation of the plant and deal principally with the question of what it has accomplished.
Katzmayr, R↗