Download or read book Measurements of Momentum Transfer from Plastic Projectiles to Massive Aluminum Targets at Speeds Up to 25 600 Feet Per Second written by B. Pat Denardo and published by . This book was released on 1962 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurements of Momentum Transfer from Plastic Projectiles to Massive Aluminum Targets at Speeds Up to 25 600 Feet Per Second written by B. PAT. DENARDO and published by . This book was released on 1962 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Momentum transfer during impact at speeds from essentially 0 to 25,600 fps was measured by a simple ballistic pendulum. The impacting projectile was made of linear high-density polyethylene and its shape and mass were maintained constant throughout the experiment. The impacted target was made of 2024-T4 Al alloy. The resulting ratio of pendulum momentum to projectile momentum varied in an orderly fashion throughout the entire velocity range, reaching a minimum of 1.0 at about 3000 fps and increasing to 1.9 at the highest velocity of 25,600 fps. The change in mass of the target was also obtained, as were penetration data for this combination of materials. It was observed that the volume of the crater as measured directly was twice the volume of the crater as computed from the target mass loss at speeds above 10,000 fps. Below 10,000 fps, this ratio increased rapidly with decreasing velocity. (Author).
Download or read book Measurements of Momentum Transfer from Plastic Projectile to Massive Aluminum Targets at Speeds Up to 25 600 Feet Per Second written by B. Pat Denardo and published by . This book was released on 1962 with total page 30 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 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP written by and published by . This book was released on 1965 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technology of Lunar Exploration written by Clifford Cumming and published by Elsevier. This book was released on 2012-12-02 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Astronautics and Rocketry, Volume 10: Technology of Lunar Exploration is an overview of the technical base of the lunar exploration problem. This volume is organized into six sections encompassing 35 that follow the various stages of accomplishment of a lunar mission, involving landing on or orbiting the moon and returning to the earth. The first section is devoted to the problem of trying to define the lunar environment, emphasizing the theories of the lunar environment as it relates to the internal structure of the moon. This section also describes some activities to achieve a reasonable theory concerning what might be encountered in some of the previous lunar flight programs. The second section explores the problems associated with the limitations imposed upon lunar missions by the launch vehicles and launching facilities. The third section looks at the spacecraft systems and techniques required for lunar missions, particularly the technology and specific subsystems in relation to the requirements imposed by specific lunar mission objectives. The fourth section deals with the actual landing on the moon and the subsequent surface operations, while the fifth section covers the lunar launch, return, flight re-entry, and subsequent landing on earth. The sixth section reports the status of the projects that represent the United States lunar exploration program, which integrates the technologies developed in the preceding sections into certain discrete projects.
Download or read book The Meteoroid Environment and Its Effects on Materials and Equipment written by William A. Cosby and published by . This book was released on 1965 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Projectile Size Effects on Hypervelocity Impact Craters in Aluminum written by B. Pat Denardo and published by . This book was released on 1967 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulative Title Index to United States Public Documents 1789 1976 written by Daniel W. Lester and published by . This book was released on 1979 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of the Momentum Transfer Associated with Impact Into Thin Aluminum Targets written by C. Nysmith and published by . This book was released on 1969 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Momentum transfer from impact into thin aluminum meteor bumper targets.
Download or read book Investigation of the Impact of Copper Filaments Into Aluminum Targets at Velocities to 16 000 Feet Per Second written by C. Robert Nysmith and published by . This book was released on 1964 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: One-half-inch- diameter aluminum spheres were fired into thin copper filaments (O. OO25inch diameter and O.75 inch length) at velocities to 16,000 feet per second, then recovered and sectioned to determine the damage. The principal variable was the filament angle of inclination. Microscopic examination of the sectioned targets and photographs revealed the various crater characteristics and penetration parameters for each shot. As the angle of inclination increased from O to 7, the depth of penetration decreased by a factor greater than 3 with most of the decrease occurring in the range from 4 to 5. Above 10 inclination angle, the penetration decreased more gradually to a final depth at broadside impact of approximately 1/10 that for end-on impact. The characteristic features of the craters also changed in these inclination ranges. Limited tests with filaments of 0.00l5-inch diameter showed a decrease in penetration approximately in proportion to the decrease in diameter. This result is very preliminary and may not be applicable to conditions other than those of this test. Incidental observations showed that small curvature of the filament may have a large effect on depth of penetration for end-on impacts but has essentially no effect for impacts of inclined filaments. The data are used to evaluate the probability of penetration greater than a selected depth for randomly oriented filaments.
Download or read book Progress in Astronautics and Aeronautics written by and published by . This book was released on 1963 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of the Momentum Transfer Associated With Impact Into Thin Aluminum Targets written by C. Robert Nysmith and published by . This book was released on 1969 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aluminum spheres of 3.2-mm diameter were fired into thin 2024-T3 aluminum targets at velocities to 8.1 km/sec and the axial components of the ejecta and target momenta were measured. It was observed that the momentum transfer associated with impacts into thin targets can be classified into four different impact phases; these phases reflect differing physical processes in the targets and are determined by the impact velocity and the target thickness. The physical processes are described and the momentum data within each impact phase are correlated. Measurements of target mass loss minimum hole diameter, and threshold-spallation velocity were also obtained and are reported.
Download or read book A Technique for Obtaining Hypervelocity Impact Data by Using the Relative Hypervelocities of Two Projectiles written by William H. Kinard and published by . This book was released on 1961 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Dependency of Penetration on the Momentum Per Unit Area of the Impacting Projectile and the Resistance of Materials to Penetration written by Rufus Davis Collins and published by . This book was released on 1960 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Penetration of Porous Projectiles in Aluminum and Plastic Targets written by Richard H. Fish and published by . This book was released on 1968 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Penetration Experiments in Aluminum 1100 Targets Using Soda lime Glass Projectiles written by Friedrich Hörz and published by . This book was released on 1995 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cratering and penetration behavior of annealed aluminum 1100 targets, with thickness varied from several centimeters to ultra-thin foils less than 1 micrometer thick, were experimentally investigated using 3.2 mm diameter spherical soda-lime glass projectiles at velocities from 1 to 7 km/s.
