Static tests of an annular conical-shock inlet and an open-nose conical inlet with three lip shapes were conducted at the Langley 8-foot transonic tunnel. Measurements of pressure recovery, surface pressure, and total pressure were made through a mass-flow range extending to choking. The results indicate that the two inlets with thin sharp lips had about the same relatively poor pressure-recovery characteristics and choked at a mass-flow rate of about 78 percent of the theoretical maximum. However, both the pressure recovery and choking mass-flow rate were greatly improved by replacing the sharp lip by two alternate shapes with lip roundness and internal contraction just behind the inlet lip.

Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.

Beginning with no. 650 each hundredth number contains a list of the Reports and memoranda published since the last list.