Stopped and Slow Rotor Aircraft Configuration

Celniker, L.; Carlson, R.; Donham, R. E.

doi:10.4271/650806

Cited by 2 publications

(1 citation statement)

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“…When the flow speed overcomes the critical speed, however,F(x) becomes the complex function. The real mode R(x)/R(1) and the imaginary mode I (x)/R (1) are shown in Fig. 3 for the mass ratio ν 2 = 0.001 and, V = 142.8, which is slightly larger than the critical speed.…”

Section: Numerical Calculationsmentioning

confidence: 99%

Flutter of Fixed-Free Elastic Strip in Uniform Flow.

Yamamoto¹

2001

Trans. Japan Soc. Aero. S Sci.

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The dynamic instability of a slender front-fixed-aft-free elastic strip in a uniform airflow is studied analytically. The analysis is performed by using the unsteady slender body aerodynamic theory and the beam theory. The analysis reveals that flutter may occur as a result of coupling between the first and second bending oscillation modes as a result of aerodynamic force when the flow speed overcomes the critical speed. One approximate method is derived, and the flutter speed, mode, and frequency are examined numerically. These approximate results are compared with other approximate ones derived by the two-term Galerkin method. And when the virtual-air-mass to strip mass ratio is sufficiently small, the flutter speed by the present method coincides with that by the two-term Galerkin method.

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Section: Numerical Calculationsmentioning

confidence: 99%

Flutter of Fixed-Free Elastic Strip in Uniform Flow.

Yamamoto¹

2001

Trans. Japan Soc. Aero. S Sci.

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Aeroelastic Divergence of Front-Free-Aft-Fixed Elastic Plate in Supersonic Flow

Yamamoto¹

2005

JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCE

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The static instability of the front-free-aft-fixed rectangular elastic plate in the supersonic uniform airstream is studied analytically. The two-dimensional supersonic small perturbation potential theory is used for the aerodynamic force evaluation. The aeroelastic divergence speed and the divergence mode are obtained by the analysis. And the piston theory is used also for the aerodynamic force evaluation. The divergence speed based on the small perturbation potential theory is coincident with the one based on the 2nd order piston theory, when the flow Mach number is higher than 3.

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Stopped and Slow Rotor Aircraft Configuration

Cited by 2 publications

References 0 publications

Flutter of Fixed-Free Elastic Strip in Uniform Flow.

Flutter of Fixed-Free Elastic Strip in Uniform Flow.

Aeroelastic Divergence of Front-Free-Aft-Fixed Elastic Plate in Supersonic Flow

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