Results 81 to 90 of about 126,211 (195)

Detailed extensions of perturbation methods for nonlinear panel flutter Technical report, 11 Dec. 1969 - 15 Mar. 1971 [PDF]

Perturbation method extension for nonlinear panel flutter to include fifth-order nonlinear terms effect, flutter-buckling interaction, and small damping ...
Kuo, C.-C., Morino, L.
core   +1 more source

Prediction of flutter onset by an LSTM neural network from measured time-variable responses of a randomly-tested airfoil using Lyapunov exponents for flutter classification

Applied and Computational Mechanics
Flutter, a self-excited oscillation due to energy transfer from the flow to the structure, can cause catastrophic failures in many aerospace structures if uncontrolled.
Pešek L., Schumann W.
doaj   +1 more source

SCAR arrow-wing active flutter suppression system [PDF]

The potential performance and direct operating cost benefits of an active flutter suppression system (FSS) for the NASA arrow-wing supersonic cruise configuration were determined.
Gordon, C. K., Visor, O. E.
core   +1 more source

Eigenspace techniques for active flutter suppression [PDF]

Eigenspace (ES) techniques were used to design an active flutter suppression system for the DAST ARW-2 flight test vehicle. The ES controller meets control surface activity specifications and at the flutter test condition provides reduced wing root ...
Garrard, W. L., Liebst, B. S.
core   +1 more source

Identification of bridge section flutter derivatives and numerical calculation of critical flutter wind speed based on deep learning

Mechanics & Industry
The current bridge flutter derivative identification method has difficulty in data acquisition, and its precision is affected by parameter settings, making it challenging to obtain flutter derivatives efficiently and accurately, which affects the ...
Sun Fangjin, Peng Jun, Zhang Daming, Li Yufei   +3 more
doaj   +1 more source

Flutter of swept fan blades [PDF]

The effect of sweep on fan blade flutter is studied by applying the analytical methods developed for aeroelastic analysis of advance turboprops. Two methods are used.
Kaza, K. R. V., Kielb, R. E.
core   +1 more source

Application of Navier-Stokes analysis to stall flutter [PDF]

A solution procedure was developed to investigate the two-dimensional, one- or two-dimensional flutter characteristics of arbitrary airfoils. This procedure requires a simultaneous integration in time of the solid and fluid equations of motion. The fluid
Sankar, L. N., Srivastava, R., Wu, J. C.
core   +1 more source

Concentrated mass effects on the flutter of a composite advanced turboprop model [PDF]

The effects on bending-torsion flutter due to the addition of a concentrated mass to an advanced turboprop model blade with rigid hub are studied. Specifically the effects of the magnitude and location of added mass on the natural frequencies, mode ...
Kaza, K. R. V., Ramsey, J. K.
core   +1 more source

Development and application of an optimization procedure for flutter suppression using the aerodynamic energy concept [PDF]

An optimization procedure is developed based on the responses of a system to continuous gust inputs. The procedure uses control law transfer functions which have been partially determined by using the relaxed aerodynamic energy approach. The optimization
Abel, I., Nissim, E.
core   +1 more source

AURICULAR FLUTTER [PDF]

BMJ, 1928
openaire   +2 more sources