Space systems — Solar cells — Calibration procedures
This document specifies the requirements for primary and secondary calibration procedures of single-junction and multi-junction space solar cells. The main body of this international standard specifies the requirements for Air Mass Zero (AM0) standard primary and secondary calibration.
The provisions of this document apply to Single-Stage and economised refrigerant compressors of the positive displacement type. Selected test methods are described for the determination of the refrigerating capacity, the power, the isentropic efficiency and the coefficient of performance. These test methods provide results of sufficient accuracy to permit consideration of the suitability of a…
Glass-reinforced thermosetting plastics (GRP) pipes — Determination of the long-term ultimate bendin...
This document specifies a method for determining by extrapolation the long-term ultimate ring bending strain and the calculation of the long-term ultimate relative ring deflection of glass-reinforced thermosetting plastics (GRP) pipes, under wet conditions.
Two methods of loading are given, one using plates the other beam bars.
Railway applications — Wheel-rail contact geometry parameters — Definitions and methods for evaluati...
This document establishes definitions and evaluation methods for wheel-rail contact geometry parameters influencing the vehicle running dynamic behaviour:
- the rolling radius difference between the two wheels of a wheelset (Δr-function) which serves as a basis for all further calculations;
- the equivalent conicity function from which are derived:
• a single equivalent conicity value for a…