Engineering topics

Spiegel, Kirk W.

Publications and source records attributed to Spiegel, Kirk W..

2 records

NASA NTRS1995

Foil Patches Seal Small Vacuum Leaks

Report discloses technique to patch holes in nickel-alloy rocket-engine nozzle parts prior to vacuum brazing. Technique involves lightly spot-welding nickel foil 0.002 in. thick over hole patched, then spot-welding corrosion-resistant steel foil of same thickness over nickel foil. Once patches subject to pressure and temperature of vacuum brazing, nickel foil diffuses to bond with nickel-alloy nozzle, making vacuum-tight seal.

Spiegel, Kirk W.↗

NASA NTRS1990

Transducer-Mounting Fixture

Transducer-mounting fixture holds transducer securely against stud. Projects only slightly beyond stud after installation. Flanged transducer fits into fixture when hinged halves open. When halves reclosed, fixture tightened onto threaded stud until stud makes contact with transducer. Knurled area on fixture aids in tightening fixture on stud.

Spiegel, Kirk W.↗