Engineering topics
Publications and source records attributed to Goldin, Daniel S..
In these opening remarks to a symposium reflecting on forty years of U.S. Human Spaceflight, NASA Administrator Daniel Goldin, reviews the impact that Alan Shepard had on him personally, to NASA, and to the whole idea of manned spaceflight. Mr Goldin cites Shepard as an example of the past and future of manned spaceflight.
Under the administration of Dan Goldin's leadership, NASA is reinventing itself. In the process, the agency is also searching for a vision to define its role, both as a US Government agency and as a leading force in humanity's exploration of space. An adaption of Goldin's speech to the American Geophysical Union on 26 May 1994 in which he proposes one possible unifying vision is presented.
An overview is presented of the most compelling technological and economic arguments for NASA's agressive coordination of an SST-development program that would enlist all available U.S. aerospace industry resources. Attention is given to the minimization of upper atmosphere pollution through the use of low-NO(x) emission combustors and the reduction of sonic boom through wing/fuselage optimization. It is projected that a successful SST program would boost U.S. civil aircraft market share to nearly 80 percent; this represents the creation of 140,000 new jobs.
The transcript of NASA Administrator Daniel S. Goldin's address to the World Space Congress is presented. The address discusses the current international flavor of space exploration, especially in the context of cooperative ventures with the former Soviet Union, and establishes the need for a return to the Moon. Goldin's speech emphasizes that returning to the moon is only the beginning of a program of exploration that will lead to human investigation of Mars, the rest of the solar system, and beyond. By following this program to its logical conclusion, human beings will eventually establish themselves as a multi-planetary species.
Given here is the address of NASA Administrator Daniel S. Goldin to the Association of Space Explorers. Mr. Goldin's remarks are on the topic of why we should go to Mars, a subject he approaches by first answering the question, What would it mean if we decided today not to go to Mars? After a discussion of the meaning of Columbus' voyage to America, he answers the question by saying that if we decide not to go to Mars, our generation will truly achieve a first in human history - we will be the first to stop at a frontier. After noting that the need to explore is intrinsic to life itself, Mr. Goldin presents several reasons why we should go to the Moon and go to Mars. One reason is economic, another is to increase our scientific knowledge, and yet another is to further the political evolution of humankind through the international cooperation required for building settlements on the Moon and Mars. He concludes by expanding upon the idea that this nation has never been one to shrink from a challenge.
The text of a brief speech addressing the technical and social benefits of Space Station Freedom is presented.
Disclosed is a multiple output DC-to-DC converter. The DC input power is filtered and passed through a chopper preregulator. The chopper output is then passed through a current source inverter controlled by a squarewave generator. The resultant AC is passed through the primary winding of a transformer, with high voltages induced in a plurality of secondary windings. The high voltage secondary outputs are each solid-state rectified for passage to individual output loads. Multiple feedback loops control the operation of the chopper preregulator, one being responsive to the current through the primary winding and another responsive to the DC voltage level at a selected output.