Results 1 to 10 of about 34,676 (314)

Flutter/ASE Flight Test Risk Control Technique of Civil Fly-by-wire Aircraft

open access: yesHangkong gongcheng jinzhan, 2022
The existing research on flight test risk control techniques related to flutter/ASE test is not systematic enough,and has limited consideration of civil fly-by-wire aircraft characteristic and onboard flight test engineer.The flutter/ASE flight test risk
WANG Haigang, ZHANG Shaoyun
doaj   +1 more source

Multidisciplinary Design Optimization of the NASA Metallic and Composite Common Research Model Wingbox: Addressing Static Strength, Stiffness, Aeroelastic, and Manufacturing Constraints

open access: yesAerospace
This study explores the multidisciplinary design optimization (MDO) of the NASA Common Research Model (CRM) wingbox, utilizing both metallic and composite materials while addressing various constraints, including static strength, stiffness ...
Odeh Dababneh   +2 more
doaj   +1 more source

Flutter Boundary Prediction of a Two Dimensional Airfoil in Transonic Flight Regime with the Preset Angles of Attack [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
Angle of attack has impact on transonic flow filed and aerodynamic force, but most of current researches on flutter use zero angle hypothesis, which has no consideration about angle of attack.

doaj   +1 more source

Flutter analysis of mistuned bladed disks

open access: yesThe Proceedings of the Dynamics & Design Conference, 2020
Although bladed disks are nominally designed to be cyclically symmetric (tuned system), the vibration characteristics of all the blades on a disk are slightly different due to the manufacturing tolerance, deviations in the material properties, and wear during operation.
Yasutomo KANEKO   +2 more
openaire   +3 more sources

Experimental Methods Applied in a Study of Stall Flutter in an Axial Flow Fan

open access: yesShock and Vibration, 2004
Flutter testing is an integral part of aircraft gas turbine engine development. In typical flutter testing blade mounted sensors in the form of strain gages and casing mounted sensors in the form of light probes (NSMS) are used.
John D. Gill   +2 more
doaj   +1 more source

Nonlinear Response Analysis of an Airfoil Using Multistep Differential Transform Method

open access: yesIEEE Access
The analysis of limit cycle oscillations (LCOs) and flutter behavior in hypersonic aeroelastic systems presents significant challenges owing to their strong nonlinearities. This study demonstrates the applicability of the Multistep Differential Transform
S. Shali, Jafarali Parol, S. R. Nagaraja
doaj   +1 more source

Experimental and numerical study of dynamic characteristic of a complex all-movable rudder system

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2018
Modal analysis and flutter computation of a complex tail cabin system including six all-movable rudders for hypersonic flight vehicle was studied in this paper.
Yuguang Bai   +3 more
doaj   +1 more source

An Integrated Test-Based Nonlinear Aeroelastic Analysis Method to Freeplay-Induced Limit-Cycle Oscillations

open access: yesInternational Journal of Aerospace Engineering, 2022
The nonlinear limit-cycle oscillations induced by aileron rotational freeplay are investigated by numerical simulation and flutter wind tunnel tests.
Yukai Sun   +4 more
doaj   +1 more source

A Quick Assessment and Optimization Method for a Flutter Aerodynamic Measure of a Typical Flat Box Girder

open access: yesShock and Vibration, 2020
Flutter is one of the most serious wind-induced vibration phenomena for long-span bridges and may cause the collapse of a bridge (e.g., the Old Tacoma Bridge, 1940).
Feng Wang   +5 more
doaj   +1 more source

AEROELASTIC FLUTTER ANALYSIS OF SUPERSONIC WING WITH MULTIPLE EXTERNAL STORES

open access: yesInternational Islamic University Malaysia Engineering Journal, 2014
: Flutter may be considered to be one of the most dangerous aeroelastic failure phenomenon. The flutter characteristic differs for each aircraft type, and depends on the wing geometry as well as its operational region of subsonic, transonic or supersonic
Nur Azam, Erwin Sulaeman
doaj   +1 more source

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