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Longitudinal static stability requirements for wing in ground effect vehicle [PDF]

open access: goldInternational Journal of Naval Architecture and Ocean Engineering, 2015
The issue of the longitudinal stability of a WIG vehicle has been a very critical design factor since the first experimental WIG vehicle has been built. A series of studies had been performed and focused on the longitudinal stability analysis.
Wei Yang, Zhigang Yang, Maurizio Collu
doaj   +4 more sources

Longitudinal quasi-static stability predicts changes in dog gait on rough terrain [PDF]

open access: hybridJournal of Experimental Biology, 2017
Legged animals utilize gait selection to move effectively and must re-cover from environmental perturbations. We show that on rough terrain domestic dogs, Canis lupus familiaris, spend more time in longitudinal quasi-statically stable patterns of movement. Here longitudinal refers to the rostro-caudal, axis.
Wilshin, Simon   +5 more
core   +9 more sources

Research on Longitudinal Static Stability Compensation of Aircraft [PDF]

open access: diamondJournal of Physics: Conference Series, 2023
Abstract An aircraft is unstable in longitudinal motion, the variation of aerodynamic derivatives and center-of-gravity position caused by altitude, speed, and fuel have a great impact on the control and stability of the aircraft. By using the Linear Matrix Inequality (LMI) approach, the longitudinal static stability of the aircraft is ...
Lidong Ding
openaire   +2 more sources

Study on Longitudinal Flight Characteristics and Relaxed Static Stability of Advanced Fighter

open access: yesHangkong gongcheng jinzhan, 2021
Due to the wide application of relaxed static stability in the field of advanced fighter design and the value of further research on the related active control technology,it is necessary to conduct a more comprehensive analysis on the influence of ...
HUANGFU Naizhang   +3 more
doaj   +2 more sources

Static Postural Stability in Women during and after Pregnancy: A Prospective Longitudinal Study. [PDF]

open access: yesPLoS ONE, 2015
This longitudinal study aimed to compare static postural stability in women between early pregnancy, advanced pregnancy, and at 2 and 6 months postpartum. Forty-five pregnant women were enrolled and 31 completed the protocol.
Agnieszka Opala-Berdzik   +6 more
doaj   +4 more sources

Evaluation of Longitudinal Static Stability of Human Powered Hydrofoil Boat

open access: bronzeJournal of the Society of Naval Architects of Korea, 2009
AbstractIn this paper, longitudinal static stability is investigated, w hich is an essential requirement for the safety and the performance of the human powered hydrofoil boat (HPHB). In case a disturbance changes the trim angle of the boat, the derivative of the moment about the center of gravity must be negative in order to make the boat to be stable.
Jung-Kyu Choi, Hyoung-Tae Kim
openaire   +3 more sources

AERODYNAMICS OF WING TIP SAILS [PDF]

open access: yesJournal of Engineering Science and Technology, 2006
Observers have always been fascinated by soaring birds. An interesting feature of these birds is the existence of few feathers extending from the tip of the wing.
MUSHTAK AL-ATABI
doaj   +2 more sources

Evaluation Method of Longitudinal Static Stability of Tailless Airplane.

open access: bronzeJournal of the Japan Society for Aeronautical and Space Sciences, 1992
Shigenori ANDO, Hiroshi KAJITA
openaire   +3 more sources

A Practical Method for Investigation of Aerodynamic and Longitudinal Static Stability of Wing-in-Ground Effect

open access: greenInternational Journal of Maritime Technology, 2015
The purpose of this paper is to present a fast, economical and practical method for mathematical modeling of aerodynamic characteristics of rectangular wing-in-ground effect (WIG).
Mohammad Saeed Seif, Mohammad Tavakoli
doaj   +1 more source

Longitudinal Aerodynamic and Stability Characteristics of High-Aspect-Ratio Unmanned Aerial Vehicles in Gust Response [PDF]

open access: yesJournal of Aerospace Technology and Management, 2019
The aim of this work is to propose an accurate and reliable numerical simulation method of gust response, so as to analyze longitudinal stability characteristics of high-aspect-ratio unmanned aerial vehicles (UAVs) under gust response.
Junli Wang   +4 more
doaj   +3 more sources

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