NASA Langley Scientific and Technical Information Output: 1999

NASA Langley Scientific and Technical Information Output: 1999 PDF Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 182

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NASA Langley Scientific and Technical Information Output: 1999

NASA Langley Scientific and Technical Information Output: 1999 PDF Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 182

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NASA Langley Scientific and Technical Information Output 2000

NASA Langley Scientific and Technical Information Output 2000 PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 162

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NASA Langley Scientific and Technical Information Output-2001

NASA Langley Scientific and Technical Information Output-2001 PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 166

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Lfm2000

Lfm2000 PDF Author:
Publisher:
ISBN:
Category : Automatic control
Languages : en
Pages : 212

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Evaluating the effectiveness of the 2000-2001 NASA "Why?" Files Program

Evaluating the effectiveness of the 2000-2001 NASA Author:
Publisher: DIANE Publishing
ISBN: 1428925759
Category :
Languages : en
Pages : 66

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Effects of Interface Coating and Nitride Enhancing Additive on Properites of Hi-Nicalon SiC Fiber Reinforced Reaction-bonded Silicon Nitride Composites

Effects of Interface Coating and Nitride Enhancing Additive on Properites of Hi-Nicalon SiC Fiber Reinforced Reaction-bonded Silicon Nitride Composites PDF Author: Ramakrishna T. Bhatt
Publisher:
ISBN:
Category : Additives
Languages : en
Pages : 24

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Strong and tough Hi-Nicalon SiC fiber reinforced reaction-bonded silicon nitride matirix composites (SiC/RBSN) have been fabricated by the fiber lay-up approach. Commercially available uncoated and PBN, PBN/Si-rich PBN, and BN/SiC coated SiC Hi-Nicalon fiber tows were used as reinforcement. The composites contained ~24 vol % of aligned 14 ♯m diameter SiC fibers in a porous RBSN matrix. Both one- and two-dimensional composites were characterized. The effects of interface coating composition, and the nitridation enhancing additive, NiO, on the room temperature physical, tensile, and interfacial shear strenght properties of SiC/RBSN matrix composites were evaluated. Results indicate that all three coated fibers, the thickness of the coating decreased from the outer periphery to the interior of the tows, and that from 10 to 30 percent of the fibers were not covered with the interface coating.

Ice Accretions and Icing Effects for Modern Airfoils

Ice Accretions and Icing Effects for Modern Airfoils PDF Author: Harold E. Addy
Publisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 292

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Icing tests were conducted to document ice shapes formed on three different two-dimensional airfoils and to study the effects of the accreted ice on aerodynamic performance. The models tested were representative of airfoil designs in current use for each of the commercial transport, business jet, and general aviation categories of aircraft. The models were subjected to a range of icing conditions in an icing wind tunnel. The conditions were selected primarily from the Federal Aviation Administration's Federal Aviation Regulations 25 Appendix C atmospheric icing conditions. A few large droplet icing conditions were included. To verify the aerodynamic performance measurements, molds were made of selected ice shapes formed in the icing tunnel. Castings of the ice were made from the molds and placed on a model in a dry, low-turbulence wind tunnel where precision aerodynamic performance measurements were made. Documentation of all the ice shapes and the aerodynamic performance measurements made during the icing tunnel tests is included in this report. Results from the dry, low-turbulence wind tunnel tests are also presented.

Implementation of Laminate Theory Into Strain Rate Dependent Micromechanics Analysis of Polymer Matrix Composites

Implementation of Laminate Theory Into Strain Rate Dependent Micromechanics Analysis of Polymer Matrix Composites PDF Author: Robert K. Goldberg
Publisher:
ISBN:
Category :
Languages : en
Pages : 28

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Evaluation of X-38 Crew Return Vehicle Input Control Devices in a Microgravity Environment

Evaluation of X-38 Crew Return Vehicle Input Control Devices in a Microgravity Environment PDF Author: Kirsten Welge
Publisher:
ISBN:
Category : KC-135 (Tanker aircraft)
Languages : en
Pages : 50

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Overview on In-Space Internet Node Testbed (ISINT)

Overview on In-Space Internet Node Testbed (ISINT) PDF Author: Alan M. Richard
Publisher:
ISBN:
Category :
Languages : en
Pages : 18

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