Download or read book Advanced Development of a Parachute Retrorocket Airdrop System written by George Chakoian and published by . This book was released on 1973 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report proposes a plan for Advanced Development of a Parachute Retrorocket Airdrop System for the airdrop of cargo loads weighing from 2500 to 40,000 pounds from altitudes of 500 feet or less above terrain. The Parachute Retrorocket Airdrop System concept uses relatively small fast opening parachutes for stabilization and preliminary retardation in combination with rockets for final descent velocity control just prior to impact. This capability is required by the US Army to increase delivery accuracy and to provide greater protection to the aircraft by decreasing its detection to hostile radar and fire. The objectives of this plan for advanced development consist of detailed functional, economic and operational analyses of the system, advanced development hardware design, fabrication and flight testing. (Modified author abstract).
Download or read book Parachute Retrorocket Airdrop System written by Joseph L. Michal and published by . This book was released on 1970 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents the results of an in-depth exploratory study of the Parachute Retrorocket Airdrop System to determine its potential for meeting the technical, economic and operational requirements of an airdrop system capable of delivering supplies and equipment weighing from 2000 to 35,000 pounds from cargo aircraft flying at an altitude of 500 feet or less above the terrain. Actual airdrops were conducted to demonstrate system capability for loads weighing up to 35,000 pounds from low altitudes.
Download or read book Plan for Advanced Development of a Parachute Retrorocket Airdrop System written by George Chakoian and published by . This book was released on 1973 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report proposes a plan for Advanced Development of a Parachute Retrorocket Airdrop System for the airdrop of cargo loads weighing from 2500 to 40,000 pounds from altutudes of 500 feet or less above terrain. The Parachute Retrorocket Airdrop System concept uses relatively small fast opening parachutes for stabilization and preliminary retardation in combination with rockets for final descent velocity control just prior to impact. This capability is required by the US Army to increase delivery accuracy and to provide greater protection to the aircraft by decreasing its detection to hostile radar and fire.
Download or read book A Parachute Retrorocket System for Low Altitude Airdrop of Cargo and Other Special Applications written by George Chakoian and published by . This book was released on 1968 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Parachute Retrorocket Recovery System for Airdrop of Heavy Loads written by George Chakoian and published by . This book was released on 1969 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of an in-depth exploratory development study of a parachute retrorocket recovery system for the airdrop of cargo loads weighing up to 50,000 pounds and the results of actual drop tests of loads wrighing from 3,000 to 35,000 pounds. This study indicates that a parachute retrorocket recovery system is particularly feasible for the recovery of airdrop loads and may prove to be the only practical system for heavy loads, especially if low altitude is a requirement.
Download or read book A Parachute Retro rocket Hybrid System for Low Altitude Airdrop of Personnel Carriers and Cargo written by Stanley W. Jackson and published by . This book was released on with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing importance of the brush fire type of warfare, in which any conflagration is to be confined immediately to a localized situation, has in proportion increased the importance of the high mobility fighting units. In brush fire warfare it is essential that sufficient manpower and fire power reach the scene of action with minimum delay. The advantage of direct air delivery of the complete fighting unit with all necessary supplies is obvious, and the capability of reliable airdrop with pinpoint accuracy into enemy held territory is fundamentally vital.
Download or read book An Active Optical Ground Sensor for a Parachute Retrorocket Airdrop System Prads written by Reinhard R. Ulrich and published by . This book was released on 1973 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: An active optical ground sensor for a Parachute Retrorocket Airdrop System (PRADS) was evaluated. The sensor yields a fire pulse for retrorocket initiation when the sensor (attached to a dropload platform) is at a predetermined distance above the ground. The senor employs triangulation and geometric ranging with a gallium arsenide laser. A fire pulse is produced when the ground surface enters a well defined detection region of small spatial extent located at the desired function range from the sensor. Drop tests of a sensor unit with a 6-in. transmitter-to-receiver lens separation showed that the sensor functioned within + or - 1 ft of the preset function height of 28 ft over a variety of ground surfaces including light dirt, sod, green shrub leaves, and sod covered with a light smoke screen. The accuracy with which the sensor indicates the function height to a point on the ground surface can be further improved by increasing the transmitter-to-receiver lens separation. Laboratory range-response measurements showed that a sensor with a 15-in. lens separation is capable of indicating a function height of 28 ft within + or - 1/2 ft for any target whose reflectance (at 0.9 micrometer) is between rho = 0.05 and rho = 0.8.
Download or read book Retrorocket Soft Landing of Airdropped Cargo written by William E. Nykvist and published by . This book was released on 1979 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: A retrorocket soft landing system for airdropped cargo is described and mathematically analyzed. Solid propellant rockets and fixed height ground sensing, previously used in the experimental Parachute Retrorocket Airdrop System (PRADS), are assumed for this system. Seventeen variables affecting the load impact velocity are defined and used to write the one-body equations of motion for the system. A computer is used to generate 500 constrained random values for each independent variable, to calculate the impact velocity for 500 cases by solving the equations of motion, and to statistically analyze the results. It is concluded that 95% of the soft landings can be expected to have impact velocities between 2.0 and 3.4 m/s (6.1 and 10.3 ft/s). (Author).
Download or read book Symposium on Parachute Technology and Evaluation written by Earl C. Myers and published by . This book was released on 1964 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery System Design Guide written by E. G. Ewing and published by . This book was released on 1979 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document serves as the third revision of the USAF Parachute Handbook which was first published in 1951. The data and information represent the current state of the art relative to recovery system design and development. The initial chapters describe representative recovery applications, components, subsystems, material, manufacture and testing. The final chapters provide empirical data and analytical methods useful for predicting performance and presenting a definitive design of selected components into a reliable recovery system.
Download or read book Parachute Recovery Systems written by Theo W. Knacke and published by . This book was released on 1992 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this manual is to provide recovery system engineers in government and industry with tools to evaluate, analyze, select, and design parachute recovery systems. These systems range from simple, one-parachute assemblies to multiple-parachute systems, and may include equipment for impact attenuation, flotation, location, retrieval, and disposition. All system aspects are discussed, including the need for parachute recovery, the selection of the most suitable recovery system concept, concept analysis, parachute performance, force and stress analysis, material selection, parachute assembly and component design, and manufacturing. Experienced recovery system engineers will find this publication useful as a technical reference book; recent college graduates will find it useful as a textbook for learning about parachutes and parachute recovery systems; and technicians with extensive practical experience will find it useful as an engineering textbook that includes a chapter on parachute- related aerodynamics. In this manual, emphasis is placed on aiding government employees in evaluating and supervising the design and application of parachute systems. The parachute recovery system uses aerodynamic drag to decelerate people and equipment moving in air from a higher velocity to a lower velocity and to a safe landing. This lower velocity is known as rate of descent, landing velocity, or impact velocity, and is determined by the following requirements: (1) landing personnel uninjured and ready for action, (2) landing equipment and air vehicles undamaged and ready for use or refurbishment, and (3) impacting ordnance at a preselected angle and velocity.
Download or read book Recovery System Design Guide written by E. G. Ewing and published by . This book was released on 1978 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Army Digest written by and published by . This book was released on 1970 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1980 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Hearings Reports and Prints of the House Committee on Armed Services written by United States. Congress. House. Committee on Armed Services and published by . This book was released on 1971 with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hearings Before and Special Reports Made by Committee on Armed Services of the House of Representatives on Subjects Affecting the Naval and Military Establishments written by and published by . This book was released on 1972 with total page 1362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Department of the army written by United States. Congress. Senate. Committee on Appropriations and published by . This book was released on 1971 with total page 1562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
