Aerospace & Aviation

Rectification process concerned with observation of accuracy in computation of osculating orbit

Distorted wave analysis of boron 22-carbon 12 deutron and neutron reaction - angular distribution

Man-machine system simulation for flight vehicles

Upper and lower bounds for ground-state second- order perturbation energy

Satellite situation report

Sputtering at oblique angles of ion incidence

This report reviews a number of theoretical matters in random process theory which can be applied to physical problems such as predicting peaks, structural fatigue damage, and catastrophic structural failures. The presentation emphasizes the basic assumptions which are involved, and discusses how to properly interpret the theoretical results. Various engineering examples are given as illustrations.

Tornado-producing cloud mass seen from tiros i correlated with surface meteorological reports

Tiros i photographs of cloud structure of occluded cyclone over gulf of alaska related to standard meteorological observations

Tiros i cloud photography - pattern revealing capability, picture quality, and location difficulties

Optical observations of solar active regions associated with some individual events

Flight test of performance, handling qualities, and operational characteristics of slipstream stol transport aircraft

Pulsating auroras as source of infrasonic waves associated with geomagnetic activity

Explorer vi and pioneer v data reduction and analysis

It is shown how the gravity-gradient effect may be utilized to design a long-lived, earth-pointing satellite attitude control system which requires no fuel supplies, attitude sensors or active control equipment. This two-body system is provided with a magnetic hysteresis damper which effectively damps out oscillations (librations) about the local vertical. The long rods, which must be extended in space from coiled up metal tapes, provide the required large moments of inertia and possess adequate rigidity and sufficient strength to endure the rigors of the extension process. The system is compatible with the requirements of multiple satellite launchings from a single last-stage vehicle. Analysis indicates that the gravitational torques are sufficient to keep the disturbing effects of solar radiation pressure, residual magnetic dipole moments, orbit eccentricity, rod curvature, eddy currents, and meteorite impacts within tolerable limits. It is believed that the high-performance, earth-pointing system described and analyzed in this paper represents an essential step in the development of high-capacity communications satellites requiring long life.