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Author :
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (317 download)
Download or read book Transonic Wind-tunnel Tests of a Lifting Parachute Model written by and published by . This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jerome T. Foughner
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (56 download)
Download or read book Transonic Wind-tunnel Tests of a Lifting Parachute Model written by Jerome T. Foughner and published by . This book was released on 1976 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind-tunnel tests have been made in the Langley transonic dynamics tunnel on a 0.25-scale model of Sandia Laboratories 3.96-meter (13-foot), slanted ribbon design, lifting parachute. The lifting parachute is the first stage of a proposed two-stage payload delivery system. The lifting parachute model was attached to a foerbody representing the payload. The forebody was designed and installed in the test section in a manner which allowed rotational freedom about the pitch and yaw axes. Values of parachute axial force coefficient, rolling moment coefficient, and payload trim angles in pitch and yaw are presented through the transonic speed range. Data are presented for the parachute in both the reefed and full open conditions. Time history records of lifting parachute deployment and disreefing tests are included.
Author : R. E. Rychnovsky
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (713 download)
Download or read book Wind Tunnel Tests to Evaluate a Lifting Transonic Parachute written by R. E. Rychnovsky and published by . This book was released on 1975 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A program to develop a two-step lifting parachute system for low altitude payload delivery at velocities up to Mach 1.2 is being conducted at Sandia Laboratories. Wind tunnel tests on scaled models have been used extensively in the development. The test objectives were to establish the feasibility of constructing a lifting parachute with the desired characteristics, to select the most promising design and construction technique from several candidate models, to optimize the performance of this model and to measure its aerodynamic coefficients. A description of the types of tests, the models and test hardware as well as pertinent results and future test plans are presented.
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ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 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.
Author : James T. Foughner
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (31 download)
Download or read book Wind-tunnel Tests of Modified Cross, Hemisflo, and Disk-gap-band Parachutes with Emphasis in the Transonic Range written by James T. Foughner and published by . This book was released on 1974 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transonic wind-tunnel studies were conducted with modified cross, hemisflo, and disk-gap-band parachute models in the wake of a cone-cylinder shape forebody. The basic cross design was modified with the addition of a circumferential constraining band at the lower edge of the canopy panels. The tests covered a Mach number range of 0.3 to 1.2 and a dynamic pressure range from 479 Newtons per square meter to 5746 Newtons per square meter. The parachute models were flexible textile-type structures and were tethered to a rigid forebody with a single flexible riser. Different size models of the modified cross and disk-gap-band canopies were tested to evaluate scale effects. Model reference diameters were 0.30, 0.61, and 1.07 meters (1.0, 2.0, and 3.5 ft) for the modified cross; and nominal diameters of 0.25 and 0.52 meter (0.83 and 1.7 ft) for the disk-gap-band; and 0.55 meter (1.8 ft) for the hemisflo. Reefing information is presented for the 0.61-meter-diameter cross and the 0.52-meter-diameter disk-gap-band. Results are presented in the form of the variation of steady-state average drag coefficient with Mach number. General stability characteristics of each parachute are discussed. Included are comments on canopy coning, spinning, and fluttering motions.
Author : Berl Gamse
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (31 download)
Download or read book Wind-tunnel Tests of a Series of 18-foot-diameter Parachutes with Extendable Flaps written by Berl Gamse and published by . This book was released on 1962 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George M. Ware
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ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (31 download)
Download or read book Wind-tunnel Investigation of the Static Aerodynamic Characteristics of a Multilobe Gliding Parachute written by George M. Ware and published by . This book was released on 1968 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nickolai Charczenko
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (317 download)
Download or read book Wind-tunnel Investigation of Drag and Stabili- Ty of Parachutes at Supersonic Speeds written by Nickolai Charczenko and published by . This book was released on 1964 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 828 pages
Book Rating : 4.3/5 (91 download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1977 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. H. Croll
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (713 download)
Download or read book Computerized Video Instrumentation Technique for Wind Tunnel Testing of Parachutes written by R. H. Croll and published by . This book was released on 1981 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind tunnel testing of parachute systems requires that correlated motion and load data be obtained simultaneously on both the forebody and the parachute to define the aerodynamic performance of this two-body system. The flexible nature of parachutes and the need for timely reduced data dictated the use of a computerized video instrumentation technique to support full-scale wind tunnel testing of lifting parachutes. Characteristics and capabilities of this versatile instrumentation and data acquisition/processing system are discussed.
Author :
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ISBN 13 :
Total Pages : 580 pages
Book Rating : 4.F/5 ( download)
Download or read book Aeronautical Engineering written by and published by . This book was released on 1971 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
Author : Valentine Korah
Publisher :
ISBN 13 :
Total Pages : 2354 pages
Book Rating : 4.4/5 (11 download)
Download or read book An Introductory Guide to EC Competition Law and Practice written by Valentine Korah and published by . This book was released on 1994 with total page 2354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles J. Silcot
Publisher :
ISBN 13 :
Total Pages : 235 pages
Book Rating : 4.:/5 (712 download)
Download or read book Test Fixture and Data Acquisition System for Wind Tunnel Testing of Parachutes written by Charles J. Silcot and published by . This book was released on 1968 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: After the analysis of the means of measuring the force and stability characteristics of flexible, steerable, gliding parachutes in the AFFDL 12-foot open-throat vertical wind tunnel at Wright-Patterson Air Force Base, a system was designed, fabricated, installed, and tested for acceptance. This system consists of two major components: The first major component, a test fixture-balance assembly, provides the means of remotely operating model parachutes through various roll, pitch, and yaw angles. This assembly consists basically of a roll-traversing mechanism which supports a sting balance as it rolls and yaws along the inner perimeter of a semicircular trussed hoop. The hoop rests on a two-part structure designed for temporary installment above the tunnel lip. For the parachute attachment and positioning, the sting balance was selected in a preliminary study in preference to the wire or strut type of balance. The second major component, a data acquisition and readout system, displays and records in digital form the normal and axial forces and the moments at various canopy pitch, roll, and yaw attitudes. In the acceptance tests with a 9.375-foot steerable parachute canopy, lift, drag, and pitching moment were obtained at various angles of pitch and at air velocities ranging from 50 to 100 feet per second.
Author : United States. Energy Research and Development Administration
Publisher :
ISBN 13 :
Total Pages : 600 pages
Book Rating : 4.3/5 (91 download)
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Energy Research and Development Administration. Technical Information Center
Publisher :
ISBN 13 :
Total Pages : 588 pages
Book Rating : 4.3/5 (129 download)
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1976 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James A. Weiberg
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (31 download)
Download or read book Wind-tunnel Tests of a Series of Parachutes Designed for Controllable Gliding Flight written by James A. Weiberg and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. National Aeronautics and Space Administration
Publisher :
ISBN 13 :
Total Pages : 792 pages
Book Rating : 4.F/5 ( download)
Download or read book Research and Technology Program Digest written by United States. National Aeronautics and Space Administration and published by . This book was released on with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
