Aerodynamic research laboratory. Devices for research of screws
| to Pass to sections: Aerodynamic research laboratory The Small pipe is adapted for supervision with the big speeds, to 50 metre, in second The Pipe is executed in the form of the wooden skeleton upholstered with a cardboard. Devices for research of screws. Such devices in laboratory is available two: the first - obshcheizvestnyevesy Renara-Rjabushinsky with two mutually perpendicular axes for measurement of draught and the screw moment; numerical measurement is made by means of a dynamometer; the second - an original design. Mine. In it the device of prof. N.E.Zhukovskogo consisting of two systems at blocks with axes, placed on rollers (one under a roof, the second below) is established. Through blocks will throw an infinite cord, knekotoroj to which point the model falling freely from above is attached ispytuemaja. The beginning and the falling end is timed by means of the special device-chronograph of own design. Knowing time and length of falling, on known parities it is easy to receive and required resistance. Besides, as the excellent index of speed of a stream the ordinary voltmeter included in a chain with the fan serves. For measurement of pressure the dynamometers consisting from metal thin bruska sdelenijami and a steel spring on which stretching define force size are used. |
the Fan of type of Sirokko is resulted in rotation by the electromotor connected directly to it in 5 losh. Forces. православный сайт - 
Measuring devices. For measurement of speed of a stream inzh. V.A.Slesarevym is designed the special device-anemometr, operating on a principle of a differential barometre-aneroida; the indication of speed of a stream in metres per second is directly shown by a device arrow. 
