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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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At least 163 records · Page 9

All sources NASA NTRS DOE OSTI

NASA NTRS1966

On the rigidity operators of a stiffened plate at creep

Rigidity operators of reinforced plate composed of isotropic homogeneous layers

REINFORCED PLATE↗

NASA NTRS1966

Use of the method of dynamic rigidities for calculating the frequencies of natural vibrations of built-up shells

Frequencies of natural vibrations in built-up shells determined by dynamic rigidities method

RIGIDITY↗

NASA NTRS1966

Calculation of control gains with filters for rigid body motion of a space vehicle

Equations for calculating control gains with filters for rigid body motion of space vehicle

RIGID BODY↗

NASA NTRS1966

Gravitational equilibria of a rigid body containing symmetric rotors.

Existence and stability of equilibrium orientations of rigid body with gyrostat in nonuniform gravitational field

RIGID BODY↗

NASA NTRS1967

Theoretical determination of gravity effects on the rotational motion of a uniaxial rigid close earth satellite.

Canonical transformation to investigate rotational motion of uniaxial orbiting rigid body influenced by gravity gradient torque

COORDINATE SYSTEM↗

NASA NTRS1967

Coupled two-degree-of-freedom response of soft- mounted rigid body to random excitation.

Mode coupling effect on response of rigid body to random excitation analyzed, using two degree of freedom model

DYNAMIC RESPONSE↗

NASA NTRS1967

Orientation of a rigid torque-free body by use of star transits.

Time dependent orientation of body fixed coordinate system relative to stars for spinning rigid torque-free body

PRECESSION↗

NASA NTRS1922

The R-38 Catastrophe and the Mechanics of Rigid Airship Construction

An airship frame may be regarded as a rigid girder subjected to a number of forces which, according to their nature, may be classified as follows: weight or loads (force of gravity); lifting forces (aero-static); accelerations (dynamic). These forces must be in equilibrium in the three most important cases during flight: 1) when the airship is floating (aerostatic problem); 2) when flying without acceleration (aerodynamic problem). 3) When under the influence of any accelerating force (dynamic problem). This report will briefly discuss each of these cases in regard to the R-38 airship accident.

AIRSHIPS - R-38 - ACCIDENTS (BRIT )↗

NASA NTRS2013

Atmospheric Entry Studies for Saturn Missions: 45 Sphere-Cone Rigid Aeroshells and Ballistic Entries

Exploration of Saturn atmospheric entry trajectory space using a 45 sphere-cone rigid aeroshell.

Atmospheric Entries↗

NASA NTRS1961

FORCED TRANSVERSE VIBRATIONS OF A SOLID, ELASTIC CORE CASE-BONDED TO AN INFINITELY-LONG, RIGID CYLINDER.

Forced transverse vibrations of a solid, elastic core case-bonded to an infinitely long, rigid cylinder

CYLINDER↗

NASA NTRS1962

LONGITUDINAL STABILITY AND CONTROL OF A TILT-WING VTOL AIRCRAFT WITH RIGID AND FLAPPING PROPELLER BLADES

Longitudinal stability and control of a tilt-wing vtol aircraft model with rigid and flapping propeller blades

WING↗

NASA NTRS1964

Apparatus of small size can be extended into long, rigid boom

Three metal sheets, having prenotched edges, are interlocked as they are unrolled from three feed rollers which form a triangle. The apparatus is relatively small, and the sheets can be erected into a rigid triangular boom of considerable length.

Miller, J. V.↗

NASA NTRS1963