Venus halo - Photometric evidence for ice in the Venus clouds

Venus halo and photometric evidence for ice in Venus cloud

The 1969 opposition effect of Mars - Full disc, Syrtis Major and Arabia

Photometric analysis of brightness surge on Mars surfac

Moon - Optical properties of Apollo 11 samples

Optical properties of lunar powder samples from Tranquility Bas

Optical properties of Apollo 12 moon samples

Optical measurements on Apollo 12 soil samples from lunar mare surface

The Influence of Topography on the Formation of Temporary Bright Patches on Mars

Influence of topography on formation of bright patches on Mar

Physical properties of the Apollo 12 lunar fines

Optical and radio frequency electrical properties and grain size analyses of Apollo 11 and 12 lunar soil sample

Space Resources and Space Settlements

The technical papers from the five tasks groups that took part in the 1977 Ames Summer Study on Space Settlements and Industrialization Using Nonterrestrial Materials are presented. The papers are presented under the following general topics: (1) research needs for regenerative life-support systems; (2) habitat design; (3) dynamics and design of electromagnetic mass drivers; (4) asteroids as resources for space manufacturing; and (5) processing of nonterrestrial materials

Adaptation of a modern medium helicopter (Sikorsky S-76) to higher harmonic control

Sikorsky Aircraft has performed analytical studies, design analyses, and risk reduction tests have been performed for Higher Harmonic Control (HHC) on the S-76. The S-76 is an 8 to 10,000 lb helicopter which cruises at 145 kts. Flight test hardware has been assembled, main servo frequency response tested and upgraded, aircraft control system shake tested and verified, open loop controllers designed and fabricated, closed loop controllers defined and evaluated, and rotors turning ground and flight tests planned for the near future. Open loop analysis shows that about 2 deg of higher harmonic feathering at the blade 75% radius will be required to eliminate 4P vibration in the cockpit

Mars - Visible and near infrared studies and the composition of the surface

Polarimetric, photometric, and spectrophotometric measurements of Mars, and visible and near infrared studies of Martian surface compositio

Television observations of Mercury by Mariner 10

The morphology and optical properties of the surface of Mercury resemble those of the Moon in remarkable detail, recording a very similar sequence of events; chemical and mineralogical similarity of the outer layers is implied. Mercury is probably a differentiated planet with an iron-rich core. Differentiation is inferred to have occurred very early. No evidence of atmospheric modification of any landform is found. Large-scale scarps and ridges unlike lunar or Martian features may reflect a unique period of planetary compression near the end of heavy bombardment, perhaps related to contraction of the core