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Author : Donald E. Hewes
Publisher : Unknown
Page : 36 pages
File Size : 47,5 Mb
Release : 1961
Category : Aerodynamic load
ISBN : UIUC:30112106872374
Author : Charles E. Libby
Publisher : Unknown
Page : 30 pages
File Size : 54,6 Mb
Release : 1963
Category : Parachutes
ISBN : UIUC:30112106864462
A free-flight investigation of a redio-controlled model of a manned reentry spacecraft with a telescoping rigid parawing as a recovery system was made to evaluate the deployment process and the stability and control characteristics of the configuration. Flight tests showed that the parawing could be deployed from a packaged condition, but that the deployment process must be a sequence of carefully controlled and timed events, and that some portions of the deployment should not occur at too fast a rate. The most significant single factor learned about the deployment process was that the parawing had to be slowly rotated to a lifting condition. Transition which is too fast from zero lift to maximum lift would result in a tumbling motion. After the parawing was deployed, the configuration was stable and controllable.
Author : Anonim
Publisher : Unknown
Page : 432 pages
File Size : 50,8 Mb
Release : 1968
Category : Electronic
ISBN : MINN:319510008461665
Author : Sanger M. Burk
Publisher : Unknown
Page : 32 pages
File Size : 42,5 Mb
Release : 1963
Category : Parachutes
ISBN : UIUC:30112106597963
An investigation has been conducted to determine the deployment, dynamic stability, and control characteristics of a parawing-rocket booster model using a radio-controlled free-flight technique. The parawing utilized folded rigid members. The results show that this deployment technique provides consistent transitions from essentially vertical descent at subsonic speeds with the parawing stowed on the booster to normal trimmed gliding flight with the parawing deployed. For the particular deployment configuration selected, a small drogue parachute was needed to hold the parawing away from the booster during deployment until the parawing was developing lift properly. In general, the flight characteristics of the model were fairly satisfactory for an unmanned vehicle although the model had a small constant-amplitude Dutch roll oscillation and some undesirable characteristics at the stall. The model was controllable by center-of-gravity movement but the response of the model appeared to be sluggish.
Author : Joseph Chambers
Publisher : Joseph Chambers
Page : 212 pages
File Size : 42,7 Mb
Release : 2015-08-10
Category : Science
ISBN : 9780160846335
state of the art in aeronautical engineering has been continually accelerated by the development of advanced analysis and design tools. Used in the early design stages for aircraft and spacecraft, these methods have provided a fundamental understanding of physical phenomena and enabled designers to predict and analyze critical characteristics of new vehicles, including the capability to control or modify unsatisfactory behavior. For example, the relatively recent emergence and routine use of extremely power- ful digital computer hardware and software has had a major impact on design capabilities and procedures. Sophisticated new airflow measurement and visualization systems permit the analyst to conduct micro- and macro-studies of properties within flow fields on and off the surfaces of models in advanced wind tunnels. Trade studies of the most efficient geometrical shapes for aircraft can be conducted with blazing speed within a broad scope of integrated technical disciplines, and the use of sophisticated piloted simulators in the vehicle development process permits the most important segment of operations—the human pilot—to make early assessments of the acceptability of the vehicle for its intended mission. Knowledgeable applica- tions of these tools of the trade dramatically reduce risk and redesign, and increase the marketability and safety of new aerospace vehicles.
Author : Joseph R. Chambers,Peter C. Boisseau
Publisher : Unknown
Page : 50 pages
File Size : 49,5 Mb
Release : 1966
Category : Airplanes
ISBN : UIUC:30112106774679
Author : Anonim
Publisher : Unknown
Page : 302 pages
File Size : 52,9 Mb
Release : 1963
Category : Science
ISBN : UOM:39015086566406
Author : William C. Sleeman
Publisher : Unknown
Page : 72 pages
File Size : 52,5 Mb
Release : 1963
Category : Aerodynamics
ISBN : UIUC:30112106597914
Author : Anonim
Publisher : Unknown
Page : 1064 pages
File Size : 54,9 Mb
Release : 2010
Category : Aeronautics
ISBN : UCSD:31822036341212
Two-volume collection of case studies on aspects of NACA-NASA research by noted engineers, airmen, historians, museum curators, journalists, and independent scholars. Explores various aspects of how NACA-NASA research took aeronautics from the subsonic to the hypersonic era.-publisher description.
Author : Rodger L. Naeseth,Thomas G. Gainer
Publisher : Unknown
Page : 88 pages
File Size : 53,6 Mb
Release : 1963
Category : Aerodynamics
ISBN : UIUC:30112106598110
An investigation has been made in the Langley 300-MPH 7- by 10-foot tunnel to determine the aerodynamic characteristics of a related series of parawings in which wing sweep was the primary variable. The leading-edge sweep angles varied from 400 to 750 and the three basic parawings had flat-planform sweep angles of 350, 450, and 550. The canopies of the wings were made of fabric. Tests were made at an airspeed of 38.6 mph and a Reynolds number of approximately 1.5 X 106. The maximum angle-of-attack range was from 140 to 530 for the wings having a canopy of 350 flat-planform sweep. A limited investigation of lateral characteristics was made for sideslip angles from approximately -50 to 160 for two angles of attack, and lateral stability derivatives were obtained for some configurations through a angle-of-attack range. Forces and moments acting on the wing and apex hinge moments were measured.
Author : Joseph L. Johnson
Publisher : Unknown
Page : 60 pages
File Size : 41,9 Mb
Release : 1962
Category : Airplanes
ISBN : UIUC:30112106593228
Author : Anonim
Publisher : Unknown
Page : 1066 pages
File Size : 46,9 Mb
Release : 2011
Category : Electronic
ISBN : STANFORD:36105050567168
Author : Joseph L. Johnson,James L. Hassell
Publisher : Unknown
Page : 80 pages
File Size : 45,6 Mb
Release : 1963
Category : Investigations
ISBN : UIUC:30112106598029
Author : Anonim
Publisher : Unknown
Page : 1274 pages
File Size : 49,7 Mb
Release : 1961
Category : Government publications
ISBN : PURD:32754073303749
Author : United States. Superintendent of Documents
Publisher : Unknown
Page : 1284 pages
File Size : 42,7 Mb
Release : 1961
Category : Government publications
ISBN : WISC:89038149274