Download or read book Development of a Parachute System for the High drag Bomb written by William M. Stirrat and published by . This book was released on 1965 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of a preliminary design study of a parachute for the high-drag bomb are given in this report, together with results of preliminary drop and whirl tower testing. Certain modifications of the parachute, based on the findings of these tests, are described. (Author).
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization of a Lifting Parachute System for Laydown Delivery of a Bomb written by R. E. Rychnovsky and published by . This book was released on 1974 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytic investigation has been performed to study the merits of incorporating a lifting parachute into a 2400 pound bomb delivery system. Lift to drag ratios of 0.3 for the initial ribbon parachute are sufficient to lift the bomb and allow enough time for a second parachute to slow the system to its terminal velocity. Impact velocities of less than 60 feet per second and impact angles greater than 50 degrees appear achievable for a release velocity range from Mach .53 to 1.2. Substantial improvements over alternate parachute systems appear feasible.
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 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 Comparison of a Hydrid Parachute System to Conventional Parachute Systems for Laydown Delivery of a Bomb written by R. E. Rychnovsky and published by . This book was released on 1974* with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytical study has been made to compare the impact conditions for a bomb using three types of parachutes: a hybrid parachute, a conventional staged two parachute system, and a single stage ribbon parachute. The comparison was made for laydown delivery of a 2400 pound bomb released from an altitude of 100 feet. The same parachute weight and pack volume was allowed for each of the three parachute systems. Possible variations in the timing of the deployment and parachute opening sequence and variation in the effective drag areas of the parachutes were considered. The hybrid parachute would provide the lowest impact velocity and highest impact angle of any of the systems considered. It could be delivered from low altutudes, but would not reach its terminal velocity nor have a high impact angle from a 100 foot release altitude.
Download or read book Development and Testing of a Drogue Parachute System for X 37 Altv B 52h Separation written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-19 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple scenarios were identified in which the X-37 approach and landing test vehicle (ALTV) catastrophically recontacts the B-52H carrier aircraft after separation. The most cost-effective recontact risk mitigation is the prelaunch deployment of a drogue parachute that is released after the X-37 ALTV has safely cleared the B-52H. After release, a fully-inflated drogue parachute takes 30 min to reach ground and results in a large footprint that excessively restricts the days available for flight. To reduce the footprint, a passive collapse mechanism consisting of an elastic reefing line attached to the parachute skirt was developed. At flight loads the elastic is stretched, allowing full parachute inflation. After release, drag loads drop dramatically and the elastic line contracts, reducing the frontal drag area. A 50-percent drag reduction results in an approximately 75-percent ground footprint reduction. Eleven individual parachute designs were evaluated at flight load dynamic pressures in the High Velocity Airflow System (HIVAS) at the Naval Air Warfare Center (NAWC), China Lake, California. Various options for the elastic reefing system were also evaluated at HIVAS. Two best parachute designs were selected from HIVAS to be carried forward to flight test. Detailed HIVAS test results are presented in this report.Whitmore, Stephen A. and Cobleigh, Brent R. and Jacobson, Steven R. and Jensen, Steven C. and Hennings, Elsa J.Armstrong Flight Research CenterX-37 VEHICLE; TEST VEHICLES; APPROACH AND LANDING TESTS (STS); B-52 AIRCRAFT; FLIGHT TESTS; STAGE SEPARATION; DRAG CHUTES; DRAG REDUCTION; HORIZONTAL FLIGHT; AERODYNAMIC LOADS; COST EFFECTIVENESS; VELOCITY DISTRIBUTION; AIR FLOW; TRANSFER ORBITS; ELASTOMERS; LOW TEMPERATURE
Download or read book Development and Testing of a Drogue Parachute System for X 37 Altv B 52h Separation written by Stephen A. Whitmore and published by BiblioGov. This book was released on 2013-08 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple scenarios were identified in which the X-37 approach and landing test vehicle (ALTV) catastrophically recontacts the B-52H carrier aircraft after separation. The most cost-effective recontact risk mitigation is the prelaunch deployment of a drogue parachute that is released after the X-37 ALTV has safely cleared the B-52H. After release, a fully-inflated drogue parachute takes 30 min to reach ground and results in a large footprint that excessively restricts the days available for flight. To reduce the footprint, a passive collapse mechanism consisting of an elastic reefing line attached to the parachute skirt was developed. At flight loads the elastic is stretched, allowing full parachute inflation. After release, drag loads drop dramatically and the elastic line contracts, reducing the frontal drag area. A 50 percent drag reduction results in an approximately 75 percent ground footprint reduction. Eleven individual parachute designs were evaluated at flight load dynamic pressures in the High Velocity Airflow System (HIVAS) at the Naval Air Warfare Center (NAWC), China Lake, California. Various options for the elastic reefing system were also evaluated at HIVAS. Two best parachute designs were selected from HIVAS to be carried forward to flight test. Detailed HIVAS test results are presented in this report.
Download or read book Gemini Spacecraft Parachute Landing System written by John Vincze and published by . This book was released on 1966 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Method for the Calculation of Parachute Opening Forces for High Altitude Balloon Payloads written by Peter L. Miller and published by . This book was released on 1975 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the questions most frequently asked by scientists/experimenters who design balloon payloads concerns the magnitude of the opening forces of the parachute recovery system. Existing theory and an analytical method recently developed for horizontal deployment are adapted to balloon systems requirements. Engineering methods are used to develop expressions which allow the assessment of the parachute opening forces.
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 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 Department of Defense Authorization for Appropriations for Fiscal Year 1986 Preparedness written by United States. Congress. Senate. Committee on Armed Services and published by . This book was released on 1985 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Testing of a Drogue Parachute System for X 37 ALTV B 52H Separation written by National Aeronaut Administration (Nasa) and published by . This book was released on 2020-08-07 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technical Report Whitmore, Stephen A. and Cobleigh, Brent R. and Jacobson, Steven R. and Jensen, Steven C. and Hennings, Elsa J. Armstrong Flight Research Center NASA/TM-2004-212044, H-2552 WU 760-90-00-SE-53-00-37A X-37 VEHICLE; TEST VEHICLES; APPROACH AND LANDING TESTS (STS); B-52 AIRCRAFT; FLIGHT TESTS; STAGE SEPARATION; DRAG CHUTES; DRAG REDUCTION; HORIZONTAL FLIGHT; AERODYNAMIC LOADS; COST EFFECTIVENESS; VELOCITY DISTRIBUTION; AIR FLOW; TRANSFER ORBITS; ELASTOMERS; LOW TEMPERATURE
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 1020 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 1953 with total page 1278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study and Development of Parachutes and Systems for In flight and Landing Deceleration of Aircraft written by D. L. Jennings and published by . This book was released on 1959 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The text of the aerodynamics study and analysis shows the theoretical development of performance equations for airplanes trailing drag parachutes. Insofar as is possible, the development is made general. Where generality is best presented by study of specific airplanes, four aircraft as specified in Exhibit MCREXE-6B-33 are used to typify all current classes of aircraft. The installation proposals show the general application of various size parachutes to each class of aircraft as pertaining to basic flight maneuvers. The simplest parachute installations and operating systems are exemplified which would provide maximum utilization of the airplanes. It is concluded that it is possible and practical to install and operate the correct size parachute for aircraft deceleration both for in-flight maneuvers and ground roll deceleration. Additional study, development, design and in-flight testing are indicated.
