Lt. Col. Albert L. Wallace, Jr., and Major Oscar G. Johnson. Basically, 
their scheme was to ignite and burn finely powdered magnesium dust in 
the tail pipe of a reconnaissance jet aircraft, and then to record - either 
by "eyeball" or camera - the objects on the ground thus illuminated 
Successful bench tests by ORDWES engineers of a scale model jet engine 
convinced Goddard that he was ready to build a full size unit. His 
already fertile imagination thus newly stimulated, Goddard pressed the 
"ON" button in his Wright Field laboratory, turning it into a veritable 
washing machine, which began to churn and pulse with his own patented 
brand of tumbling action. Nary an engineer, draftsman, electrician, 
plumber, machinist or welder escaped his determined efforts to exploit 
his newest idea - the airborne "open hearth". Unlike some inventions, 
the "Hell Roarer" was not created as the result of leisurely, untrammeled 
reflections on the part of some inspired genius.....The simple fact is 
that it was whacked together in nothing flat under the constant surveil 
lance of Goddard himself, who, by the way, could make it hotter for you 
than any "Hell Roarer" ever invented. 
Thus was the first flyable model fabricated. Included among its 
features was a screw mechanism for feeding the powder from its storage 
hopper into a funneled tail pipe. Two king-size electrodes, energized 
by a spark coil, were mounted in the exhaust funnel to ignite the powder 
as it was forced through the tail pipe (during flight) by ram air sup 
plied by a nose intake scoop. The entire assembly was housed in a 
standard 165 gallon fuel tank, adapted for external pylon suspension 
beneath the wing of an R.B-26 night reconnaissance aircraft (Figure 34).