Results 51 to 60 of about 8,095 (184)

Detection of Aircraft Touchdown Using Longitudinal Acceleration and Continuous Wavelet Transformation

Sensors, 2020
The paper presents a methodology enabling the detection of aircraft touchdowns based on data obtained from accelerometers attached to the structural parts of the airframe in the cockpit or passenger compartment.
Jerzy Bakunowicz, Paweł Rzucidło
doaj   +1 more source

CE17003 [PDF]

, 2018
The 2017 Irish Anglerfish and Megrim Survey (IAMS) took place from 14th February to 7th March (area 7bcjk) and 8-17th April 2017 (area 6a) on RV Celtic Explorer.
Gerritsen, H.D., Kelly, E., Ni Chonchuir, G., O'Hea, B., Stokes, D.   +4 more
core  

FP6 CEDER Project Deliverable 1.1.2 "Data Quality Report" [PDF]

, 2009
Addressing the uncertainties in fishing activities, the CEDER project harnessed fishery observer reports, landings, logbooks, and VMS records information. The project collected data from these sources for six selected fisheries.
BARKAI Amos, BERTRAND Sophie, BURNS Finlay, COTTER John, FELAAR Fatima, GEGGUS Karl, KROENER Ulrich, PIET Gerjan, PILLING Graham, QUIRIJNS Floor, REID David, VALGEIRSDÓTTIR Helga Sigurrós   +11 more
core   +1 more source

Intraspecific variation in resilience traits of eelgrass across intertidal stress gradients and oyster aquaculture methods

Frontiers in Marine Science
Species persist through resistance and recovery traits induced by natural stressors. Whether human activities exacerbate or moderate the effects of natural stressors is an open question.
Jennifer L. Ruesink, Katie Houle, Kristy J. Kroeker, Brett R. Dumbauld, Fiona C. Boardman, Nathaniel S. Lewis, Brooke A. McIntyre, Andrew D. Suhrbier, Bobbi Hudson   +8 more
doaj   +1 more source

Protection of shallow marine ecosystems in Galapagos by permanent moorings [PDF]

, 2009
We describe a new system of permanent moorings designed for tour boats, to be installed throughout Galapagos, and the deployment of a research and monitoring vessel to Wolf ...
Merlen, Godfrey, Ortiz Quevedo, Fernando, Pépolas, Roberto   +2 more
core  

Generation of acoustic emission from the running-in and subsequent micropitting of a mixed-elastohydrodynamic contact [PDF]

, 2018
This paper presents the use of Acoustic Emission to study the running-in and subsequent micropitting of a pair of hardened steel surfaces under mixed lubrication conditions.
Clarke, A., Evans, H. P., Hutt, S.
core   +1 more source

电镀CBN锥砂轮磨齿热状态的研究

Jixie chuandong, 2004
In this thesis, a new thermal condition model of gear grinding has been suggested for the analysis of the conical-grinding-wheel-workpiece system. And the surface temperature field of ground tooth flanks has been analyzed and calculated using the finite ...
刘竹丽, 张涛, 邱太生
doaj  

Dynamic Fatigue Tests Of Landing Gears

Fatigue of Aircraft Structures, 2020
Landing gears are one of the main components of an aircraft. The landing gear is used not only during take-off and landing but also, in most cases, during ground manoeuvres.
Skorupka Zbigniew
doaj   +1 more source

Dynamic Testing and Fatigue Analysis of the I-31P Nose Landing Gear

Fatigue of Aircraft Structures
The landing gear is a critical safety component of any aircraft, playing a key role in managing the significant loads experienced during landing and ground maneuvers. In the case of the I-31P aircraft, a redesign of the I-23 landing gear system, required
Skorupka Zbigniew
doaj   +1 more source

Development of a space qualified high reliability rotary actuator for spaceflight use. Volume 2: Appendices to technical report [PDF]

A space-qualified, high reliability, 150 ft-lb rated torque rotary actuator is described. This drive is an integrated variable reluctance orbit motor-epicyclic transmission actuator.
Presley, R. W., Presley, R. W., Sikora, N. L.   +2 more
core   +1 more source