The Absolute Quantum Efficiency of Calcium Tungstate with Lead in the Extreme Ultraviolet Region Scientific Report No. 1, 1 Feb. 1965 - 30 Jun. 1966
Luminescence of calcium tungstate with lead in far ultraviolet region
CALCIUM TUNGSTATE↗
SEARCH · Engineering Papers
Results for “LEAD”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Effect of wing leading-edge shape on aerodynamic characteristics of a 67 deg swept wing-body model at Mach 1.50 to 4.63
Effect of wing leading-edge shape on aerodynamic characteristics of 67 deg swept wing-body model at Mach 1.50 to 4.63
SUPERSONIC SPEED↗
Studies of lead telluride thermoelectric elements.
Bond degradation and diffusion of braze and shoe constituents in lead telluride thermoelectric elements
THERMOELECTRIC MATERIAL↗
The preparation and properties of segmented lead telluride-silicon-germanium thermoelements.
W-diffusion bonding in preparing segmented silicon-germanium-lead telluride thermoelements, noting properties
DIFFUSION BONDING↗
The bonding of lead telluride with non-magnetic electrodes.
W-diffusion bonding of lead telluride base thermoelements with nonmagnetic electrodes
DIFFUSION BONDING↗
A concept of the vortex lift of sharp-edge delta wings based on a leading-edge-suction analogy
Vortex lift calculation for sharp-edge delta wings based on leading edge suction analogy
VORTEX FLOW↗
An exploratory study of the vortex sheets shed from the leading edges of slender wings
Analysis of vortex sheets shed from leading edges of slender wings
SLENDER WING↗
Effects of shock-wave impingement on the heat transfer on a cylindrical leading edge
Shock wave impingement effects on heat transfer on cylindrical leading edge
ROUNDED LEADING EDGE↗
Aerodynamic characteristics at Mach 2.03 of a series of curved-leading-edge wings employing various degrees of twist and camber
Aerodynamic characteristics at Mach 2.03 of series of curved leading edge wings employing various degrees of twist and camber
TWISTED WING↗
A theoretical investigation of the aerodynamics of slender wing-body combinations exhibiting leading-edge separation
Theoretical investigation of aerodynamics of slender wing-body combinations exhibiting leading edge separation
SLENDER WING↗
Aluminum bonded lead telluride thermoelectric module research and development Quarterly report, 1 Aug. - 1 Nov. 1966
Aluminum bonded lead telluride couples for use in space thermoelectric power supplies
THERMOELECTRICITY↗
Hypersonic leading edge structures and materials
Aerodynamic factors affecting performance of hypersonic leading edges up to 4000 deg F in terms of material capabilities
HIGH TEMPERATURE ENVIRONMENT↗
Aerodynamic characteristics of several cranked leading-edge wing-body combinations at Mach numbers from 0.4 to 2.94
Aerodynamic characteristics of leading-edge sweep wing-body combinations
AERODYNAMIC CHARACTERISTICS↗
Amplitude-independent ultrasonic attenuation in superconducting lead.
Temperature and frequency effects on amplitude- independent longitudinal ultrasonic attenuation in superconducting lead
ACOUSTIC ATTENUATION↗
Navier-Stokes solutions about the F/A-18 forebody-leading-edge extension configuration
Three-dimensional viscous flow computations are presented for the F/A-18 forebody including the leading-edge extension geometry. Solutions are obtained from an algorithm for the compressible Navier-Stokes equations that incorporates an upwind-biased, flux-difference-splitting approach along with longitudinally patched grids. Results are presented for both laminar and fully turbulent flow assumptions and include correlations with wind-tunnel as well as flight-test results. A good quantitative agreement for the forebody surface pressure distribution is achieved between the turbulent computations and wind-tunnel measurements at M ∞ = 0.6. The computed turbulent surface flow patterns on the forebody qualitatively agree well with in-flight surface flow patterns obtained on an F/A-18 aircraft at M ∞ = 0.34
Leading edge extension↗
Section Characteristics of the NACA 0006 Airfoil with Leading-edge and Trailing-edge Flaps
Lift and pitching-moment characteristics of an NACA 0006 airfoil are presented for various deflections of a 0.15-chord leading-edge flap and a 0.30-chord plain trailing-edge flap. Pressure-distribution data are presented in tabular form. The data were obtained at a Mach number of 0.15 and a Reynolds number of 4,500,000.
FLAPS, PLAIN - WING SECTIONS↗
Lead-free solders: issues of toxicity, availability and impacts of extraction
This project set out to evaluate the critical issues of toxicity and public health effects, material availability, and the environmental impacts of raw material extraction and metal finishing, with the goal of using environmental impact as a factor in selecting feasible lead-free alloys.
toxicity lead-free solder packaging↗
(abstract) A Brief, Selective Review of Thermal Cycling Fatigue in Eutectic Tin-Lead Solder
This paper reviews selected parts of the current literature relevant to thermo-mechanical fatigue mechanisms in eutectic tin-lead solder, and suggests a general outline to account for some observed failures. The field is found to be complex. One recent experimental study finds some failure modes to be sensitive to joint geometry. Attempts to extrapolate from test environments to service environments have had only limited success. Much work remains to be done before fatigue failures in this material can be considered as under practical control.
environments↗