Some notes on torque generator reaction torque and its effect on inertial instruments operating in the pulsed balance mode
Permanent magnet torque generator reaction torque effect in precision gyros and accelerometers
Fuhrman, T. A.↗
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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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A note on the scattering geometry from infinite cylinders
Light scattering geometry from infinite cylinder shown consistent with Rayleigh-Gans formalism
Craven, P. D.↗
Note on feedforward inverses for linear sequential circuits
Linear sequential circuits feedforward inverse transfer function matrix existence condition and construction procedure
Olson, R. R.↗
Visual phenomena noted by human subjects on exposure to neutrons of energies less than 25 million electron volts
Multiple starlike flashes and short streaks reported by subjects exposed to neutrons under 25 mev, discussing interaction with retinal rods by proton recoils
Bichsel, H.↗
Experimental studies on the Hawaiian silverswords /Argyroxiphium ssp./ - Some preliminary notes on germination
Hawaiian silversword seed germination and inhibition showing extraordinary heat sensitivity
Carroll, P.↗
A note on scattering from a slightly rough surface
Bistatic radar scattering cross section from slightly rough perfectly conducting infinite surface, using Fourier transform
Swift, C. T.↗
A note on AFLs and bounded erasing
F-bounded erasing operator in abstract family of language for mapping, applying to families defined by tape-bounded Turing acceptors
Book, R. V.↗
A note on some efficient estimates of the noise variance for first-order Reed-Muller codes
Noise variance maximum likelihood estimate based on order statistics for first order Reed-Muller code transmission over zero-mean white Gaussian noise channel
Holmes, J. K.↗
Note on the occurrence of driblet spires in the Snake River Plain, Idaho
Driblet spires in Snake River Plain, Idaho, discussing basalt lava features and remnants in lunar areas
Greeley, R.↗
A note on the possible importance of the Gum nebula
Reasons for considering the Gum nebula a fossil H II region are presented. Arguments for different types of fossil regions are given. Possible research projects are enumerated.
Cox, D. P.↗
A note on the effect of reflected solar radiation on airborne and ground measurements in the thermal infrared
The magnitude of thermal solar radiation reflected from water surfaces is considered. It is shown both theoretically and by field observation that, for instruments with small fields of view, the reflected thermal solar radiation can contribute significantly to the measured energy. Comparison of thermal scanner data taken from aircraft at a 16 deg azimuth angle from the mirror point of the sun over the open ocean with data taken at a 164 deg anzimuth angle from the mirror point of the sun at the same angle from nadir is indicative of a difference of 2.8 K in the equivalent black body radiation temperature. Observations taken from a surface vessel into sunglint 80 deg from nadir are indicative of an equivalent black body radiation temperature that is 34 K warmer than the temperature obtained at a similar nadir angle away from the sunglint.
Whitehead, V. S.↗
GENET note no. 1
The general features of the GENET system for simulating networks are described. A set of features is presented which are desirable for network simulations and which are expected to be achieved by this system. Among these features are: (1) two level network modeling; and (2) problem oriented operations. Several typical network systems are modeled in GENET framework to illustrate various of the features and to show its applicability.
Yeh, J. W.↗
Data user's note: Mariner 6 and 7 photographic data (NSSDC ID no. 69-014A-01 and 69-030A-01
The availability and assistance in the use of the complete set of Mariner 6 and 7 (1969 14A and 1969 20A) pictorial data are announced. The announcement describes the photographic mission of these Mariner spacecrafts, the television camera system, and the photographs that are available from the National Space Data Center. Two appendixes are included: one is a photographic catalog of all enhanced photographs, designated the maximum discriminability photographs; the other is a series of computer produced graphics that are useful in detailed analysis of the photographs.
Anderson, A. T.↗
Implementation of radiation shielding calculation methods. Volume 2: Seminar/Workshop notes
Detailed descriptions are presented of the input data for each of the MSFC computer codes applied to the analysis of a realistic nuclear propelled vehicle. The analytical techniques employed include cross section data, preparation, one and two dimensional discrete ordinates transport, point kernel, and single scatter methods.
Capo, M. A.↗
A note on the Gledhill model of the magnetosphere of Jupiter
Free-free emission from a constant density, isothermal rectangular of thickness 2 Jupiter radii and side dimensions 2 x 8 radii is considered. It is determined that the free-free emission from the Gledhill model exceeds the flux measured from the planet over the entire microwave spectrum. Consequently the electron density must be considerably less than Gledhill assumed (10 to the 9th power electrons/cu cm). The upper limit to the electron density which can be set by comparing free-free emission with the observed spectrum is approximately 10 to the 7th power electrons/cu cm.
Gulkis, S.↗
A note on pole assignment
It is shown that for a controllable, linear time invariant multivariable system at least max (m,p) poles can be assigned arbitrarily. In certain cases more than max (m,p) oikes can be assigned. This result is particularly useful in designing systems for high integrity in the event of transducer failure. In such an event this design takes advantage of the unequal number of inputs and outputs so as to assure no loss in pole assignability.
Sridhar, B.↗
Note on the origin of Jupiter's magnetic field
The effect of the coriolis force was examined for stability of rotating hydromagnetic systems. It is shown that the effect of this force is to inhibit the onset of instability which leads to convective motion in these systems. The possibility of the existence of a dynamo process in Jupiter's interior is discussed, taking into account the effect of the coriolis force.
Sakurai, K.↗
A note on the acceleration phase of high-energy particles in the solar flare on 7 July, 1966.
The acceleration phase of solar cosmic rays and relativistic electrons is studied on the basis of the observational data available on the optical, radio, X-ray, and particle events associated with the solar flare that occurred on July 7, 1966. The generating process of hydromagnetic shock waves which excited the type-II radio burst detected at a frequency below about 100 MHz is also discussed. The results of the study suggest that no secondary acceleration process after the explosive phase can contribute much to the generation of high energy particles. The ejection of solar cosmic rays and relativistic electrons seems to be related to the expansion of the magnetic bulge which can trap accelerated electrons from the triggering region of solar flares.
Sakurai, K.↗