Search NASASearch

Engineering topics

Jacob, D. S.

Publications and source records attributed to Jacob, D. S..

Pressure modulating valve

A modulating valve device, operated by fluid pressure in fluid motors to control work pressure, is described.

Jacob, D. S.

Constant-rate fluid-delivery system

Mechanical-feedback regulated modulating valve maintains pressure in bag equal to that within bellows, causing fluid to be expelled at a constant rate. Adaptable to systems where bellows are replaced by cylinders, bladders, or diaphragms.

Jacob, D. S.