Fuel in the Tanks Available to Purchase

ALTHOUGH aviation gasoline for spark ignition engines reached its peak during the 1939–45 war, development of the gas turbine inhibited further work in this field. Large quantities of gasoline will be required for many years for piston‐engined aircraft, but it is unlikely that it will change much from what has been available for some time. The first gas turbine engines were regarded as having non‐critical fuel requirements, but with increased complexity in the design and control of the engines the fuel specifications have become more complicated and numerous. Improved performance, economy, overhaul life and other factors figure increasingly in modern requirements.