Engineering topics
Goldsmith, P.
Publications and source records attributed to Goldsmith, P..
Conceptual Design of the Lunar Crater Radio Telescope (LCRT) on the Far Side of the Moon
In this paper, we present the conceptual design of a Lunar Crater Radio Telescope (LCRT) on the far side of the Moon. We propose to deploy a wire mesh using wall-climbing DuAxel robots in a 3–5 km diameter lunar crater on the farside, with a suitable depth-to-diameter ratio, to form a parabolic reflector with a 1 km diameter. LCRT will be the largest filled-aperture radio telescope in the Solar System. LCRT could enable scientific discoveries in the field of cosmology by observing the early Universe in the 10–50 m wavelength band (i.e., 6-–30 MHz frequency band), which has not been explored for cosmological observations to date. We have described LCRT’s science objectives and key technology challenges, that we need to overcome to make this concept a reality. We envisage that LCRT will open a new window for humanity’s exploration of the Universe.
First Detection of Methanol in Protostellar Disks
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Detection of Methanol in a Class 0 Protostellar Disk
We report the detection of emission from methanol in a compact source coincident with the position of the L1157 infrared source, which we attribute to molecules in the disk surrounding this young, class 0 protostellar object.
Population Diagram Analysis of Line Emission From Molecular Clouds
We develop the use of the population diagram method to analyze molecular emission in order to derive physical properties of interstellar clouds.
Gas Phase Chemistry in Dense Interstellar Clouds Including Grain Surface Molecular Depletion and Desorption
We present time dependent models of the chemical evolution of molecular clouds which include depletion of atoms and molecules onto grain surface and desorption, as well as gas-phase interactions.
Cometary Globules in the South-East Quadrant of the Rosette Nebula
a study of newly identified cometary globules in the south-east quadrant of the Rosette Nebula using the J=1-0 transition of carbon monoxide.
A Well-Defined Bipolar Outflow Shell
We report in this letter the results of a study of the massive bipolar outflow in the central region of the giant molecular cloud Monoceros R2.
Testing the Bipolar Outflow Models: A Well-Shaped Bipolar Outflow Shell in Mon R2
We identify in our CO J = 1 - 0 maps an.
The Giant Molecular Cloud Monoceros R2 I. Shell Structure
Young stellar objects are born in molecular cluds in the Milk Way and external galaxies.
Array technology and applications
The role of photovoltaics (PV) in advanced missions and its use is discussed. Mission goals were analyzed and advanced concepts were tested. Costs were considered and the viability of the U.S. array industry is examined.
Solar array workshop
The solar workshop began with a review of the needs and objectives in this area as presented by the various government representatives during the preceding sessions. The major problem noted with respect to needs was the potentially conflicting requirements of low cost and low weight. Since the importance of weight and cost and relationship between them are strongly mission dependent, the workshop concluded that the requirements of military missions in synchronous orbit could be quite different from the requirements of NASA low-orbit missions and that an assignment of specific technology deficiencies could only be related to specific mission classes.
Study to establish criteria for a solar cell array for use as a primary power source for a lunar-based water electrolysis system, phase 4
Establishing solar cell array criteria for use as primary power source in lunar-based water electrolysis system