Results 81 to 90 of about 8,095 (184)
Research on the Stability and Bifurcation Characteristics of a Landing Gear Shimming Dynamics System
AerospaceA dynamic model is established to investigate the shimmy instability of a landing gear system, considering the influence of nonlinear damping. The stability criterion is utilized to determine the critical speed at which the landing gear system becomes ...
Shuang Ruan +4 more
doaj +1 more source
Quantifying depletion rates of benthic macrofauna from the Danish Seine - a ‘low impact’ mobile bottom-contacting fishing gear [PDF]
The Danish ‘anchor’ seine is a widely used commercial fishing gear, assumed to have relatively low seabed impact due to shallow sediment penetration. However, this assumption has lacked empirical testing.
Bromhall, Katrina +6 more
core +1 more source
Report by the Aerospace Safety Advisory Panel [PDF]
The process of preparation for the first two shuttle flights was observed and information from both flights was gathered in order to confirm the concept and performance of the major elements of the space transportation system.
core +1 more source
Distribution, Abundance, and Biological Characteristics of Groundfish off the Coast of Washington, Oregon, and California, 1977-1986 [PDF]
, 1994 We compare results of bottom trawl surveys off Washington, Oregon, and California in 1977, 1980, 1983, and 1986 to discern trends in population abundance, distribution, and biology.
Dark, Thomas A., Wilkins, Mark E.
core
Croatian Journal of FisheriesMackerel scad Decapterus macarellus is a highly valuable species in the Philippines municipal and commercial fishing industry, particularly in northern Philippine waters in the Babuyan Channel fishing ground.
Villarao Melanie C. +1 more
doaj +1 more source
Jixie chuandong, 2005 The 2K-H nutation mechanism of gear roller mesh is applied to the reducer which drive a petroleum exploitation screw pump under ground. A new nutating reducer was designed and manufactured, and through the test, satisfied result was acquired.
田方, 陶柯, 姜芳
doaj
, 1996 A planetary gear system includes a sun gear coupled to an annular ring gear through a plurality of twist-planet gears, a speeder gear, and a ground structure having an internal ring gear. Each planet gear includes a solid gear having a first half portion
Vranish, John M.
core +1 more source
Vibration Qualification Campaign on Main Landing Gear System for High-Speed Compound Helicopter
AerospaceVibrations in helicopters have strong implications for their performance and safety, leading to the increased fatigue of components and reduced operational efficiency.
Antonio Chiariello +6 more
doaj +1 more source
Catch comparison between rockhoppers and bobbins ground gear on the Norwegian bottom sampling trawl
, 1988 In a study aimed at improving the reliability of the Norwegian bottom sampling trawl, comparative fishing between standard bobbins gear and rockhopper ground gear were carried out in the Barents Sea. The catch ratios bobbins/ rockhopper (B/R) for cod and haddock show a higher efficiency for rockhopper than for bobbins, especially for small fish.
Engås, Arill +2 more
openaire +1 more source
The Influence of Roughness on Gear Surface Fatigue [PDF]
Gear working surfaces are subjected to repeated rolling and sliding contacts, and often designs require loads sufficient to cause eventual fatigue of the surface.
Krantz, Timothy
core +1 more source