Design, develop and deliver split coil for swaging Hastelloy and stainless steel tubing Final report
Design and development of split coil for swaging Hastelloy and stainless steel tubing
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Design and development of split coil for swaging Hastelloy and stainless steel tubing
Fabrication of counterflow double wall tantalum- stainless steel mercury boiler
Outdoor high temperature corrosion tests for aluminum alloys and titanium alloys, and stainless steels
Adhesion in air and vacuum of titanate coatings applied to 321-stainless steel Brayton parasitic load resistors
Stress wave analysis and crack opening displacement to monitor subcritical crack growth for grade B alloy steel pressure vessels
Stress corrosion cracking evaluation of several precipitation hardened stainless steels
Pressure and temperature dependence of slow crack growth in hardened steel in gaseous hydrogen environment
Fracture toughness of Ni maraging steel weldments, using bending tests
Pool boiling heat transfer from stainless steel coated with Teflon to produce nonwetted surfaces
Stainless steel sensitization analyzed using Mossbauer spectroscopy and X ray diffraction, noting ferromagnetic phase
Passive current maxima during anodic polarization of stainless steel in sulfuric acid, using electrochemical and electron microprobes
Plain strain fracture toughness tests on two inch thick maraging steel plates of various strengths, using bend and compact tension tests
Plane strain fracture toughness tests on maraging steel plates for various yield strengths and large dimensions
Nickel maraging steel polarization behavior in acidic solutions, noting corrosion potential dependence on pH
Hydrogen embrittlement mechanism in steel based on modified pressure theory, discussing crack propagation mechanisms and stress corrosion cracking
Quench rate effect on martensite start temperature and fine structure of Fe-C and Fe-C-Ni steel, using transmission electron microscopy
C content and microstructure effect on electrochemical parameters of Fe and steels in dilute sulfuric acid, discussing Tafel constants and current density
Results are presented of a free-flight investigation between Mach numbers of 0.7 to 1.3 and Reynolds numbers of 3.1 x 10(exp 6) to 7.0 x 10(exp 6) to determine the longitudinal aerodynamic characteristics of the Northrop MX-775A missile. This missile has a weng, body, and vertical tail, but has no horizontal tail. The basic wing plan form has an aspect ratio of 5.5, 45 deg of sweepback of the 0.406 streamwise chord line, and a taper ratio of 0.4. A 1/10-scale steel-wing model of the missile was flown with modifications to the basic wing plan form consisting of leading-edge chord-extensions deflected 7 deg downward together with the forward 15 percent of the wing chord, and inboard trailing-edge flaps deflected 5 deg downward. In addition, the model had a static-pressure tube mounted at the tip of the vertical tail for position-error measurements and had a speed brake also mounted on the vertical tail to trim the model to positive lift coefficients and to permit determination of the trim and drag effectiveness of the brake. The data are uncorrected for the effects of wing elasticity, but experimental wing influence coefficients are presented.