Feasibility study 30 watts per pound rollup solar array Quarterly report, 1 Jan. - 31 Mar. 1968
Wrap drum, adhesives, and vibration tests for 30 watts per pound rollup solar array
Source record↗
SEARCH · Engineering Papers
Results for “vibration testing”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Study of vibration induced stresses in design of fuel-element support assembly for tungsten water-moderated nuclear reactor
Vibration tests of concentric tube fuel element support structure for Tungsten Water Moderated Reactor
Adams, D. W.↗
An experimental and analytical vibration study of thin cylindrical shells with and without longitudinal stiffeners
Vibration tests and analysis of thin cylindrical shells with and without longitudinal stiffeners
Naumann, E. C.↗
An upper bound to the response spectrum of transmitted shocks.
Upper bound to response spectrum of transmitted shocks in spacecraft under flight conditions, using ground vibration test data
Phelps, W. D.↗
Shaker slip-plate adapter
Magnesium adapter ties in all of the attachment bosses on a horizontal slip table and makes a rigid coupling which terminates in a single row of attachment bosses at the edge of the horizontal plate. This eliminates ineffective dissipation of the driving force in vibration tests.
Holm, O. S.↗
Portable vibration exciter
Gas-driven vibration exciter produces a sinusoidal excitation function controllable in frequency and in amplitude. It allows direct vibration testing of components under normal loads, removing the possibility of component damage due to high static pressure.
Beecher, L. C.↗
Studies of interface damping Final report, 25 Nov. 1966 - 10 Sep. 1969
Energy dissipation and damping effects on aluminum cantilever beams in air and vacuum vibration tests, and slip in cantilever beams with either nonsymmetric or multiple interfaces
Lindholm, U. S.↗
Vibration tolerance of a mercury-column coulometer
Vibration tests on mercury column coulometer
Birchenough, A. G.↗
Light weight solar panel development Final report
Environmental and vibration tests of lightweight solar panel
Lackey, J. A.↗
Improved relay chatter detector
Detector provides go/no-go sensing of momentary relay or contact opening during vibration testing. Device compares duration of unwanted openings to calibrated standard and lights indicator if standard is exceeded. Stability and reliability are higher than in any other comparable device.
Reynolds, R. K.↗
Space shuttle TPS panel vibration studies
Vibration tests of space shuttle panels at room temperature
Carden, H. D.↗
Peak acceleration limiter for vibrational tester Patent
Electronic detection system for peak acceleration limits in vibrational testing of spacecraft components
Chapman, C. P.↗
Design of SERT 2 spacecraft structures
Design constraints, design description, handling and fabricating, and shock and vibration testing of SERT 2 spacecraft structures
Sharp, G. R.↗
Effects of vibration and shock on the performance of gas-bearing space power Brayton cycle turbomachinery. 1 - Half- sine shock and sinusoidal vibration
Half-sine shock and sinusoidal vibration tests of gas bearing supported rotor assembly and effects on mechanical performance of Brayton cycle space-power turbomachinery
Curwen, P. W.↗
Analytical and experimental studies of natural vibrations modes of ring-stiffened truncated-cone shells with variable theoretical ring fixity
Experimental and analytical investigations of the vibratory behavior of ring-stiffened truncated-cone shells are described. Vibration tests were conducted on 60 deg conical shells having up to four ring stiffeners and for free-free and clamped-free edge constraints and 9 deg conical shells, for two thicknesses, each with two angle rings and for free-free, free-clamped, and clamped-clamped edge constraints. The analytical method is based on linear thin shell theory, employing the Rayleigh-Ritz method. Discrete rings are represented as composed of one or more segments, each of which is a short truncated-cone shell of uniform thickness. Equations of constraint are used to join a ring and shell along a circumferential line connection. Excellent agreement was obtained for comparisons of experimental and calculated frequencies.
Naumann, E. C.↗
Performance of a 10 mlb biowaste resistojet.
Description of the thrusting performance of a 10-mlb thrust, concentric-tubes biowaste resistojet, which was life tested on hydrogen and ammonia propellants for 8000 hours. Thrusting performance is presented for H2, H2O, CH4, and CO2 as well as typical biopropellant mixtures CO2-CH4, H2O-CH4 and CO2-H2O. Using Pt-Ir alloy heater tubes, 235 and 575 seconds were obtained for water and hydrogen propellants. Overall total power efficiencies were 66%, which includes losses for a preevaporator close-coupled for the water tests. Vibration to 1.0 sq q/Hz with an overall G rms of 36, shock at 30 g's and acceleration to 8 g's simulating a launch were passed by the thrustor.
Phillips, D. G.↗
Panel flutter
Criteria are presented for the prediction of panel flutter, determination of its occurrence, design for its prevention, and evaluation of its severity. Theoretical analyses recommended for the prediction of flutter stability boundaries, vibration amplitudes, and frequencies for several types of panels are described. Vibration tests and wind tunnel tests are recommended for certain panels and environmental flow conditions to provide information for design of verification analysis. Appropriate design margins on flutter stability boundaries are given and general criteria are presented for evaluating the severity of possible short-duration, limited-amplitude panel flutter on nonreusable vehicles.
Dowell, E. H.↗
Vibration characteristics of aluminum plates reinforced with boron-epoxy composite material.
Analytical and experimental data on the vibration characteristics of cantilevered winglike flat trapezoidal aluminum plates are presented. The plates had been reinforced with boron-epoxy composite material which had been placed symmetrically about the plate middle surface. The effect of filament orientation on the mode shapes and frequencies of the first ten modes and on the damping coefficients of several of the lowest frequency modes has been investigated experimentally. Experimental data are compared with results from a finite-element analysis. Stiffness properties of the composite material for use in the analysis were determined from vibration tests of composite reinforced aluminum beams.
Clary, R. R.↗