Cooling Jacket, Water, Rocket Motor, Goddard, Half

Irrregularly-shaped, larger half (with inlet pipe) of the water-cooling jacket for 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; these tubes are brazed from the second half circle on the top, to a smaller diameter half circle on tht bottom of the object; one 0.5 in. o.d. diameter pipe brazed on to half-way point around lower half circle on bottom, up to "throat" area of nozzle section, this pipe bent at angle to join horizontally-placed disc, steel, 1.25 in. o.d. and 1 in. high; another pipe, also 0.5 in. o.d., leading, at first at an angle to match the curved contour of the top of the nozzle, then bent to straight and follow the straight shape of the cylindrically-shaped chamber section in the upper half.