Results 111 to 120 of about 26,676 (308)

An interactive grid generation procedure for axial and radial flow turbomachinery [PDF]

open access: yes
A combination algebraic/elliptic technique is presented for the generation of three dimensional grids about turbo-machinery blade rows for both axial and radial flow machinery.
Beach, Timothy A.
core   +1 more source

Study of Near-Stall Flow Behavior in a Modern Transonic Fan with Composite Sweep [PDF]

open access: yes, 2011
Detailed flow behavior in a modern transonic fan with a composite sweep is investigated in this paper. Both unsteady Reynolds-averaged Navier-Stokes (URANS) and Large Eddy Simulation (LES) methods are applied to investigate the flow field over a wide ...
Hah, Chunill, Shin, Hyoun-Woo
core   +1 more source

JT9D jet engine performance deterioration [PDF]

open access: yes, 1978
The analytical techniques utilized to examine the effects of flight loads and engine operating conditions on performance deterioration are presented.
Jay, A., Sallee, G. P., Todd, E. S.
core   +1 more source

Procrustean pseudo‐landmark methods in Python to measure massive quantities of leaf shape data

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise When examining leaf shapes that are different from one another, it can be difficult to compare both the overall leaf shape and points along the leaf margin in biologically and statistically meaningful ways. Methods To address this problem, we present a simple and user‐friendly leaf shape analysis method in Jupyter Notebook and Python ...
Asia Hightower   +22 more
wiley   +1 more source

Testing of a Microwave Blade Tip Clearance Sensor at the NASA Glenn Research Center [PDF]

open access: yes
The development of new active tip clearance control and structural health monitoring schemes in turbine engines and other types of rotating machinery requires sensors that are highly accurate and can operate in a high temperature environment.
Bencic, Timothy J.   +3 more
core   +2 more sources

Advanced materials research for long-haul aircraft turbine engines [PDF]

open access: yes, 1978
The status of research efforts to apply low to intermediate temperature composite materials and advanced high temperature materials to engine components is reviewed.
Blankenship, C. P., Signorelli, R. A.
core   +1 more source

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

open access: yesThe Anatomical Record, EarlyView.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

open access: yesThe Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li   +12 more
wiley   +1 more source

In-place recalibration technique applied to a capacitance-type system for measuring rotor blade tip clearance [PDF]

open access: yes
The rotor blade tip clearance measurement system consists of a capacitance sensing probe with self contained tuning elements, a connecting coaxial cable, and remotely located electronics.
Barranger, J. P.
core   +1 more source

Ontogenetic changes and sexual dimorphism in the cranium and mandible of the Atlantic walrus (Odobenus rosmarus rosmarus L.)

open access: yesThe Anatomical Record, EarlyView.
Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx   +6 more
wiley   +1 more source

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