Results 131 to 140 of about 417,955 (336)

The Role of Interfacial Shear Strength in Composite Performance

open access: yesPolymer Composites, EarlyView.
Plasma‐modified fibre interfaces: effects on interfacial shear strength and composite fracture behaviour. ABSTRACT This study investigates the role of interfacial shear strength (ISS) in governing the mechanical behavior of fiber‐reinforced composites through an experimental approach.
G. Scarselli   +5 more
wiley   +1 more source

Potential Applications of Active Antenna Technologies for Emerging NASA Space Communications Scenarios [PDF]

open access: yes
The National Aeronautics and Space Administration (NASA) is presently embarking on the implementation of far-reaching changes within the framework of both space and aeronautics communications architectures.
Downey, James M.   +4 more
core   +1 more source

Geophysical Research [PDF]

open access: yes, 1968
Contains report on one research project.National Aeronautics and Space Administration (Grant NGR-22-009-131)National Aeronautics and Space Administration (Grant NGR-22-009 ...
Fiocco, G., Koons, H. C.
core  

Characterization of Structure, Properties, and Energetic Performance of a 1:1 Ammonium Dinitramide‐3,4‐Diaminofurazan Cocrystal

open access: yesPropellants, Explosives, Pyrotechnics, EarlyView.
Ammonium dinitramide (ADN) and 3,4‐Diaminofurazan (DAF) form a 1:1 energetic cocrystal. We report its crystal structure and spectroscopic signature and evaluate thermal stability, decomposition behavior, hygroscopicity, and combustion properties. Propellant performance calculations benchmark the material against guanylurea dinitramide (GuDN) and ...
Peter Schultz   +2 more
wiley   +1 more source

The Effect of Fillets Between Wings and Fuselage on the Drag and Propulsive Efficiency of an Airplane [PDF]

open access: yes
Tests were made to determine the effect of fillets between wings and fuselage on the drag and propulsive efficiency of a high-wing cabin monoplane. These tests were made in the 20-foot Propeller Research Tunnel of the National Advisory Committee for ...
Gough, Melvin N
core   +1 more source

Radio Astronomy [PDF]

open access: yes, 1966
Contains research objectives.National Aeronautics and Space Administration (Grant NsG-419)National Aeronautics and Space Administration (Contract NSR-22-009-120)Lincoln Laboratory Purchase Order No ...
Barrett, Alan H.
core  

Critical Review of Brazil Disk Techniques for Tensile Strength Characterization With an Emphasis on High Explosive Materials

open access: yesPropellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Mechanical properties are a critical performance metric for many high explosive (HE) materials and tensile strength properties are particularly important. Direct tensile measurements using dogbone shaped samples are the gold standard but they have the disadvantage that they are fairly large and require samples machined from billets.
Paul B. Mirkarimi
wiley   +1 more source

Journal of Aeronautics and Space Technologies (JAST)

open access: yesHavacılık ve Uzay Teknolojileri Dergisi, 2019
As the competition gets more and more fierce in today’s markets, companies have to have an effectively chosen strategy in order to acquire better place in the market in which they are active.
Tuncay Gürbüz
doaj  

Summary of 1989 - 1990 aeronautics design projects [PDF]

open access: yes
Four design projects were completed at Auburn University this year under the sponsorship of the NASA/Universities Space Research Association Advanced Design Program.

core   +1 more source

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