Several concepts are described for use singly or in combination to improve aircraft braking. All involve a thin layer of aluminum covering all or part of the runway. Advantage would derive from faster heat conduction from the tire-runway interface. Heating of tread surface with consequent softening and loss of friction coefficient should be reduced. Equations are developed indicating that at least 99 percent of friction heat should flow into the aluminum. Preliminary test results indicate a coefficient of sliding friction of 1.4, with predictably slight heating of tread. Elimination of conventional brakes is at least a remote possibility.

The over-all pressure losses computed from the pressure-loss chart are within 7 percent of the experimental values for the three types of combustion chamber presented herein.

This report summarizes the survey of NATO nations made by Mr Pinkel on behalf of the Propulsion and Energetics Panel of AGARD. It presents a consolidation of the data gathered in almost all NATO nations through a series of interviews and correspondence. It addresses the fuel supply outlook within the NATO nations for hydrocarbon fuels as well as alternate fuels. Also discussed are possible specification changes for fuels and changes in design and operation. Included are numerous recommendations for future programs in the fuels area. (Author).