Download or read book Nearly Circular Transfer Trajectories for Descending Satellites written by George M. Low and published by . This book was released on 1959 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simplified expressions describing the transfer from a satellite orbit to the point of atmospheric entry are derived. The expressions are limited to altitude changes that are small compared with the earth's radius, and velocity changes that are small compared with satellite velocity. They are further restricted to motion about a spherical, nonrotating earth. The transfer trajectory resulting from the application of thrust in any direction at any point in an elliptic orbit is considered. Expressions for errors in distance (miss distance) and entry angle due to an initial misalinement and magnitude error of the deflecting thrust are presented. The guidance and accuracy requirements to establish a circular orbit, and orbit corrections are also discussed.
Download or read book Nearly Circular Transfer Trajectories for Descending Satellites with List of References written by and published by . This book was released on 1959 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nearly Circular Transfer Trajectories for Descending Satellites written by George M. Low and published by . This book was released on 1959 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simplified expressions describing the transfer from a satellite orbit to the point of atmospheric entry are derived. The expressions are limited to altitude changes that are small compared with the earth's radius, and velocity changes that are small compared with satellite velocity. They are further restricted to motion about a spherical, nonrotating earth. The transfer trajectory resulting from the application of thrust in any direction at any point in an elliptic orbit is considered. Expressions for errors in distance (miss distance) and entry angle due to an initial misalinement and magnitude error of the deflecting thrust are presented. The guidance and accuracy requirements to establish a circular orbit, and orbit corrections are also discussed.
Download or read book NASA Technical Report written by and published by . This book was released on 1959 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1967-10 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimates of Minimum Energy Requirements for Range controlled Return of a Nonlifting Satellite from a Circular Orbit written by Charles M. Jackson and published by . This book was released on 1961 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Existing expressions are used to obtain the minimum propellant fraction required for return from a circular orbit as a function of vacuum trajectory range. The solutions for the parameters of the vacuum trajectory are matched to those of the atmospheric trajectory to obtain a complete return from orbit to earth. The results are restricted by the assumptions of (1) impulsive velocity change, (2) nearly circular transfer trajectory, (3) spherical earth, atmosphere, and gravitational field, (4) exponential atmospheric density variation with attitude and (5) a nonrotating atmosphere. Calculations are made to determine the effects of longitudinal and lateral range on required propellant fraction and reentry loading for a nonrotating earth and for several orbital altitudes. The single- and two-impulse method of return is made and the results indicate a "trade off" between propellant fraction required and landing-position accuracy. An example of a return mission from a polar orbit is discussed where the initial deorbit point is the intersection of the North Pole horizon with the satellite orbit. Some effects of a rotating earth are also considered. It is found that, for each target-orbital-plane longitudinal difference, there exists a target latitude for which the required propellant fraction is a minimum.
Download or read book Advances in Space Science and Technology written by Frederick I. Ordway and published by Academic Press. This book was released on 2014-12-02 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Space Science and Technology, Volume 4 provides information pertinent to the fundamental aspects of basic and applied astronautics. This book deals with one of the more practical aspects of artificial satellites, measurement of the Doppler effect. Organized into six chapters, this volume begins with an overview of the Doppler effect of Earth-circling satellites. This text then explores the possibility of the existence of intelligent beings other than man. Other chapters consider the historical development of multistage rockets and space carrier vehicles and explain the concepts and approaches to manned orbital flight. This book discusses as well the problems of bringing spacecraft safely through planetary atmospheres and onto the surface. The final chapter deals with radioactive elements as energy sources for spacecraft propulsion in orbital transfer and for travel between the worlds of the Solar System. This book is a valuable resource for biologists, astronomers, chemists, geologists, and geochemists.
Download or read book NASA Technical Note written by and published by . This book was released on 1961 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transactions of the Seventh Symposium on Ballistic Missile and Space Technology Held at the United States Air Force Academy on 13 16 August 1962 written by Charles T. Morrow and published by . This book was released on 1962 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Re entry and Planetary Entry Physics and Technology written by W.H.T. Loh and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade, a rapid growth of knowledge in the field of re-entry and planetary entry has resulted in many significant advances useful to the student, engineer and scientist. The purpose of offering this course is to make available to them these recent significant advances in physics and technology. Accordingly, this course is organized into five parts: Part 1, Entry Dynamics, Thermodynamics, Physics and Radiation; Part 2, Entry Abla tion and Heat Transfer; Part 3, Entry Experimentation; Part 4, Entry Concepts and Technology; and Part 5, Advanced Entry Programs. It is written in such a way so that it may easily be adopted by other universities as a textbook for a two semesters senior or graduate course on the sub ject. In addition to the undersigned who served as the course instructor and wrote Chapters, 1, 2, 3 and 4, guest lecturers included: Prof. FRANKLIN K. MOORE who wrote Chapter 5 "Entry Radiative Transfer," Prof. SHIH-I PAI who wrote Chapter 6 "Entry Radiation-Magnetogasdy namics," Dr. CARL GAZLEY, J r. who wrote Chapter 7 "Entry Deaccelera [ion and Mass Change of an Ablating Body," Dr. SINCLAIRE M. SCALA who wrote Chapter 8 "Entry Heat Transfer and Material Response," Mr.
Download or read book Exploratory Statistical Analysis of Planet Approach Phase Guidance Schemes Using Range Range rate and Angular rate Measurements written by David P. Harry and published by . This book was released on 1960 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WADC Technical Report written by United States. Wright Air Development Division and published by . This book was released on 1960 with total page 1274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hearings Reports and Prints of the Senate Committee on Aeronautical and Space Sciences written by United States. Congress. Senate. Committee on Aeronautical and Space Sciences and published by . This book was released on 1970 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nomination written by United States. Congress. Senate. Committee on Aeronautical and Space Sciences and published by . This book was released on 1969 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nomination Hearing Ninety first Congress First Session on the Nomination of George M Low written by United States. Congress. Senate. Committee on Aeronautical and Space Sciences and published by . This book was released on 1969 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index of NASA Technical Publications written by United States. National Aeronautics and Space Administration and published by . This book was released on 1959 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Selected Listing of NASA Scientific and Technical Reports for written by and published by . This book was released on 1959 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
