Engineering topics

Lindgren, A. R.

Publications and source records attributed to Lindgren, A. R..

2 records

NASA NTRS1967

Temperature-sensed cryogenic bleed maintains liquid state in transfer line

Inverted tee, installed at a high point in a cryogenic transfer line, is equipped with an insulated bleed line that passes a fixed amount of cryogenic fluid at atmospheric pressure. A sensing device activates a vent valve in the tee stack whenever gaseous nitrogen is present.

Lindgren, A. R.↗

NASA NTRS1966

Inexpensive insulation is effective for cryogenic transfer lines

Matting cover thermally insulates cryogenic-liquid transfer pipelines. The matting consists of layers of commercially available fiber glass tape in which the fibers are randomly oriented in parallel planes.

Lindgren, A. R.↗