RECENT DEVELOPMENT CONNECTED WITH THE HYPERSONIC OF THE POLYTECHNIC INSTITUTE OF BROOKLYN Part I: Tests of the Compression Heater Part II: Aspects of the Design, Construction and Installation of a Multiple-Outlet Collector for the Convection Heater

摘要

Two recent developments connected with the hypersonic facility of the Polytechnic Institute of Brooklyn are described in this report. The first pertains to tests of the compression heater; these were carried out in order to evaluate the utility of the compression heater for hypersonic testing. The results of the tests indicate that there is a substantial air leakage past the piston of the heater, causing unsatisfactory heater performance. This Leakage occurs in both directions during various phases of the compression cycle. Alterations in the design of the diaphragm are dearly required before improved performance can be anticipated.