Download or read book Atmosphere Entries with Spacecraft Lift drag Ratios Modulated to Limit Decelerations written by Lionel L. Levy and published by . This book was released on 1962 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmosphere Entries with Spacecraft Lift drag Ratios Modulated to Limit Decelerations written by Lionel L. Levy and published by . This book was released on 1962 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmosphere Entries with Vehicle Lift drag Ration Modulated to Limit Deceleration and Rate of Deceleration written by Elliott D. Katzen and published by . This book was released on 1961 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmosphere Entries with Vehicle Lift drag Ratio Modulated to Limit Deceleration and Rate of Deceleration Vehicles with Maximum Lift drag Ratio of 0 5 written by Elliott D. Katzen and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis has been made of atmosphere entries for which the vehicle lift-drag ratio was modulated to maintain specified maximum decelerations and/or maximum deceleration rates. The part of the vehicle drag polar used during modulation was from maximum lift coefficient to minimum drag coefficient. The entries were at parabolic velocity and the vehicle maximum lift-drag ratio was 0.5. Two-dimensional trajectory calculations were made for a nonrotating, spherical earth with an exponential atmosphere. The results of the analysis indicate that for a given initial flight-path angle, modulation generally resulted in a reduction of the maximum deceleration to 60% of the unmodulated value or a reduction of maximum deceleration rate to less than 50% of the unmodulated rate. These results were equivalent, for a maximum deceleration of 10g, to lowering the undershoot boundary 24 miles with a resulting decrease in total convective heating to the stagnation point of 22%. The maximum convective heating rate was increased 18%. (Author).
Download or read book Atmosphere Entries with Vehicle Lift drag Ration Modulated to Limit Deceleration and Rate of Deceleration written by Elliott D. Katzen and published by . This book was released on 1961 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1962 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1962 with total page 1990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Publications Announcements with Indexes written by United States. National Aeronautics and Space Administration and published by . This book was released on 1962 with total page 1556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1963 with total page 1196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Annual Subject Index for Technical Publications Announcements Apr Dec 1962 written by United States. National Aeronautics and Space Administration and published by . This book was released on 1962 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stability and Control of Airplanes and Helicopters written by Edward Seckel and published by Academic Press. This book was released on 2014-05-10 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stability and Control of Airplanes and Helicopters deals with aircraft flying qualities that determine the stability and control of airplanes and helicopters. It includes problems based on real aircraft, selected to represent the gamut from simple to complicated, and from conventional utility designs to futuristic research types. Many of these problems involve comparison of theory and experiment to demonstrate their mutual relationship. Comprised of 25 chapters, this book begins with a discussion on the aerodynamics of the component parts related to the lift and moment characteristics of an airplane, including wings and associated accessories; bodies such as fuselages, nacelles, and tip tanks; and control surfaces. The reader is then introduced to some mathematical techniques for linear differential equations; steady flight at different speeds; and stick force and control-free stability. Subsequent chapters focus on flaps and high-lift devices; power and compressibility effects; and the manner in which the aircraft responds to the application of control. Aeroelasticity and longitudinal equations of motion are also examined. This monograph is intended for undergraduate and graduate students taking modern engineering courses.
Download or read book The Effect of Lift on Entry Corridor Depth and Guidance Requirements for the Return Lunar Flight written by Thomas J. Wong and published by . This book was released on 1961 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Entry corridors for manned vehicles returning from the moon are defined consistent with requirements for avoiding radiation exposure and for limiting values of peak deceleration. It was found that the use of lift increases the depth of the entry corridor and, hence, reduces guidance accuracy requirements. Mid-course guidance requirements appear to be critical only for the flight-path angle. Increasing the energy of the transfer orbit increases the required guidance for the flight-path angle. To correct a trajectory for an error in target perigee point, it was found that application of the corrective thrust essentially parallel to the local horizontal produces the maximum change in perigee altitude for a given increment of velocity. It was also found that the energy required to effect a given change in perigee altitude is not strongly dependent on the energy of the orbit, but it was found to vary inversely with range measured from the center of the earth. For this reason, it is important to detect and correct any errors in approach trajectory at the largest possible distance from the earth.
Download or read book Comparison of Two Maneuvers for Longitudinal Range Control During Atmospheric Entry written by Lionel L. Levy and published by . This book was released on 1962 with total page 24 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 1960 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Variation and Control of Range Traveled in the Atmosphere by a High drag Variable lift Entry Vehicle written by Donald C. Cheatham and published by . This book was released on 1960 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1980 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1961 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
