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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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Payload-apogee altitude performance, static stability and dynamic motions of Tomahawk vehicle analyzed for ability to meet 100 km sounding rocket requirement
Aerobee 350 sounding rocket for scientific use in heavy payload to moderate altitude performance region
Air loads on sounding rocket from distributed aerodynamics and pressure differential
Error in application of WKB method to linearized postburnout equation of motion of sounding rocket
Nose selection and vehicle motion dynamics for second stage of two-stage sounding rocket system, discussing nose shapes effect on altitude performance, overall vehicle stability, bending moments, etc
Liquid propellant utilization for sounding rockets
Steady state forced sound propagation in semiinfinite gas induced by oscillating plane piston reflecting particles with Maxwellian distribution
Nonlinear resistance of multiple resonator arrays at incident sound high pressure levels
Surface pressure spatial correlation function for rigid infinitely long cylinder in three- dimensional diffuse sound field
Micrometeorite flux rate for Leonid shower measured with Luster sounding rocket collecting surface
Air loads on sounding rocket from distributed aerodynamics and pressure differential
Aerobee 350 sounding rocket for scientific use in heavy payload to moderate altitude performance region
Dynamic flight characteristics of spin-stabilized sounding rockets during passage through atmosphere, emphasizing roll resonance and motions leading to roll lock-in and angle of attack
Optimal estimation of atmospheric temperature and composition from limb sounding observations is extended to the direct retrieval of line-of-sight atmospheric structure that can be obtained in certain limb viewing geometries.
A future mission for a new microwave atmospheric temperature sounder radiometer in a Middle Earth Orbit (MEO) at 11,000 km altitude is described. The MeoSTAR design uses a stationary l-dimensional Synthetic Thinned Array Radiometer in the 50-60 GHz microwave sounding band, to provide a 'pushbroom' image as the satellite orbits. The advantage of this concept is an image with a high spatial resolution and a wide swath with no scanning antenna to disturb the visual and IR sensors on the same satellite.
The martian subsurface has been probed to kilometer depths by the Mars Advanced Radar for Subsurface and Ionospheric Sounding instrument aboard the Mars Express orbiter. Signals penetrate the polar layered deposits, probably imaging the base of the deposits. Data from the northern lowlands of Chryse Planitia have revealed a shallowly buried quasi-circular structure about 250 kilometers in diameter that is interpreted to be an impact basin. In addition, a planar reflector associated with the basin structure may indicate the presence of a low-loss deposit that is more than 1 kilometer thick.
Micro-X is a sounding rocket borne X-ray telescope that utilizes transition edge sensors to perform imaging spectroscopy with a high level of energy resolution. Its 2.1m focal length X-ray optic has an effective area of 300 sq cm, a field of view of 11.8 arcmin, and a bandpass of 0.12.5 keV. The detector array has 128 pixels and an intrinsic energy resolution of 4.5 eV FWHM. The integration of the system has progressed with functional tests of the detectors and electronics complete, and performance characterization of the detectors is underway. We present an update of ongoing progress in preparation for the upcoming launch of the instrument.
Sounding Rocket Experiment CLASP2 (Chromospheric LAyer Spectro-Polarimeter-2): Development of the UV (Ultraviolet) High-Precision Polarization Spectroscopy Device