Results 11 to 20 of about 11,349 (300)

Impact of ground gear design on catch efficiency in demersal trawl fishery [PDF]

open access: yesRegional Studies in Marine Science, 2023
The choice of ground gear design in demersal trawls can significantly affect both catch composition and efficiency. The preference for a specific design depends on the fishing ground. In the North-Eastern Mediterranean, two types of ground gears, Single Line and Double Line are commonly used.
Y.E. Fakıoğlu   +4 more
openaire   +6 more sources

In Situ Determination Of Bottom Trawl Ground Gear Contact [PDF]

open access: yes, 2001
No abstracts are to be cited without prior reference to the author.Exact definition of towed distance with proper ground gear contact is an essential parameter in bottom trawl swept area estimates of fish abundance. Errors in this key parameter may lead to a first order bias in abundance estimates of demersal fish.
Engås, Arill, Ona, Egil, Ramberg, Kjell
core   +6 more sources

Design of an Adaptive Landing Gear with Ground Contact Sensing Capability [PDF]

open access: yesNanjing Hangkong Hangtian Daxue Xuebao
To improve the landing capability of helicopters on complex terrain, this paper proposes an adaptive landing gear with ground contact sensing capability.
LI Qi, MIAO Hongtao, YANG Yun
doaj   +2 more sources

Impact of operator characteristics on landing gear ground manoeuvre occurrences [PDF]

open access: yesThe Aeronautical Journal
AbstractThe variability in ground manoeuvre occurrences for aircraft landing gear is intrinsically linked to the airport geometries served by aircraft in-service and consequently, the cyclic loads that landing gear carry are driven by the route network and characteristics of aircraft operators.
J. Hoole, J.D. Booker, J.E. Cooper
openaire   +3 more sources

Ground load and float-ability analysis of trolley type landing gear [PDF]

open access: yesHangkong gongcheng jinzhan
The compatibility of aircraft landing gear and pavement is of great significance to the ground motion ability of aircraft. In this paper, the landing gear load and tire load distribution under different working conditions for a large aircraft are ...
YANG Yu   +3 more
doaj   +2 more sources

Influence of Variable Side-Stay Geometry on the Shimmy Dynamics of an Aircraft Dual-Wheel Main Landing Gear [PDF]

open access: yes, 2013
Commercial aircraft are designed to fly but also need to operate safely and efficiently as vehicles on the ground. During taxiing, take-off, and landing the landing gear must operate reliably over a wide range of forward velocities and vertical loads ...
Howcroft, Chris   +3 more
core   +1 more source

Research on the Influence of Temperature on the Cushioning Performance of Oil-air Landing Gear

open access: yesHangkong gongcheng jinzhan, 2022
The oil characteristics and inflation pressure inside the oil-air shock absorber will change with the ambient temperature,which will affect the cushioning performance of landing gear.In order to explore the effect of temperature on the cushioning ...
HU Rui, MU Rangke, SONG Dejun, CHEN Yi
doaj   +1 more source

Application of acoustic emission to seeded gear fault detection [PDF]

open access: yes, 2005
Acoustic emission (AE) is gaining ground as a non-destructive technique for health diagnosis on rotating machinery. There are vast opportunities for development of the AE technique on various forms of rotating machinery, including gearboxes.
Mba, David   +2 more
core   +1 more source

Study on design of taper shaped skiving cutters for internal gears (Taper shaped cutter ground with trapezoidal wheels used for pinion cutter grinding)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Taper shaped skiving cutters are commonly used in gear skiving because they provide clearance angles under a simple gear arrangement and they could have lower cutting resistance than cylindrical skiving cutters. Their tooth flanks are generally ground by
Koichiro URIU   +6 more
doaj   +1 more source

Gear micropitting initiation of ground and superfinished gears: Wrought versus pressed and sintered steel

open access: yesTribology International, 2021
Abstract This paper investigates the resistance of micropitting on two materials, using an FZG back-to-back test rig with C-PT gears. The materials are wrought steel (16MnCr5) and a commercial powder metallurgical material (Astaloy™ Mo). Two finishing methods were studied: grinding and superfinishing. Experimental results show that the superfinishing
Edwin Bergstedt   +4 more
openaire   +1 more source

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