Cooling Jacket, Water, Rocket Motor, Goddard, Half

Irrregularly-shaped, smaller half (without inlet pipe) of the water-cooling jacket of a cylindrical rocket motor combustion chamber on top and tapering down to the adjoining jacket for a long exhaust nozzle on the bottom; top part made of 24 copper tubes, most of them bent and longitudinally arranged, none of the tubes totally straight; these tubes, brazed on to a steel half circle on the bottom, with one larger diameter, 0.5. o.d., inlet pipe jutting out on top from the middle of the half circle; the tubes widely spaced apart, 0.25 in. apart on the average, giving the object a semi-circular cage-like appearance; bottom half of object made of 12 similar tubes, also longitudinally arranged, and also widely space apart, and with most of the tubes bent; one short length of tube, 0.5 in. o.d., 5.5 in. long, brazed to middle of bottom lower circle.