Factors in the Design of Centrifugal Type Injection Valves for Oil Engines
A 1928 technical report on centrifugal-type injection valves for oil engines, issued through the NASA Technical Reports Server and aimed at engineers designing fuel injection hardware. Its plates are side-by-side photographs of fuel spray patterns recorded at varying injection and chamber pressures, with a vertical scale marked in inches at the right. A designer could borrow the soft, billowing plume shapes and the dark banded background as references for atomization, fog, or smoke effects.
