Construction and calibration of pitot-static systems

The introduction of automatic altitude reports in connection with a surveillance of the separation levels of aircraft makes it necessary to examine the performance of pitot-static systems. Error calculations have shown that conditions at flight altitude of 30,000 ft are critical. The reported investigation has the objective to show constructive solutions for pitot-static systems used for altitude reports, taking into account the regulations which have to be satisfied by suitable pitot-static systems. Attention is given to similarity relations, the selection of the equipment, design and construction details, aspects of error correction, questions of calibration, and design and testing regulations.