
The E28R2 smoke tank was used to lay smoke and to spray liquid agents from airplanes.
The E28R2 spray tank weighed 98.5 pounds empty. The gross volume of the tank was 110 gallons. This tank had an orifice of eight inches and an approximate flow rate of 33 gallons per second at 480 miles per hour. Its performance was considered similar to that expected from a Russian spray tank with a reported 29 gallons per second discharge rate and a 7.9-inch orifice.
During development, the E28R2 was an E74R1 fire bomb converted to an airplane spray tank with the Kit, Conversion, fire-bomb-to-spray-tank, E121R1 with an eight-inch nozzle.
No information about functioning.
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Old Chemical Weapons and Related Materiel Reference Guide (2018)