Effect of certain geometrical parameters on metrological characteristics of multichamber black body
Abstract
Multichannel principles are used in the creation of a model black body (BB) with a large radiating surface. It is shown that the design of a proposed BB has an aluminum plate, the radiating surface of which is closely dotted with square pyramids. This conserves the good conditions of heat transfer to the elements of the radiating surface and improves the radiation characteristics by a considerable decrease of the effect of the vertexes of the pyramid on the radiation factor and an increases the size of the radiating strip. It is necessary to find a pitch of the cut of the radiating surface elements to allow for the nonuniformity of the temperature at the height of the pyramid and the error or reproduction of the BB radiation by a real radiator would be minimum. The effect of the pitch on the metrological characteristics of the BB is investigated.
- Publication:
-
USSR Rept Electron Elec Eng JPRS UEE
- Pub Date:
- May 1984
- Bibcode:
- 1984RpEEE.......38T
- Keywords:
-
- Black Body Radiation;
- Geometrical Optics;
- Meteorological Parameters;
- Pitch (Inclination);
- Brightness Distribution;
- Heat Transfer;
- Models;
- Optics