Unsteady Aerodynamic Characteristics of a Blade in Pitching Oscillation with Flow Separation : 1st Report.: The Case with Laminar Separation Bubble

Fujimoto, Ichiro; Tanaka, Hideo; Ishii, Susumu; Yamaguchi, Kensei

doi:10.1299/jsme1958.28.1610

Cited by 1 publication

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Where Ω means vorticity calculated from wind velocity measured by PIV (Particle Image Velocimetry). In [9], it has been confirmed that the effect of the dynamic lift becomes more significant as k increases in experiments in which the value of k up to about 0.6. It is also shown that the sweep angle of the leading edge of the wing strongly affects the dynamic lift phenomenon because the dynamic lift phenomenon is affected by the strong vortex raised from the leading edge.…”

Section: Aerodynamic Considerations On Directional Stabilitymentioning

confidence: 77%

Experimental Study on Directional Stability of Tumbling Plate

Ishiguro

Miyake

2021

JIIAE

View full text Add to dashboard Cite

This paper describes the directional stability of the tumbling plate by measuring the trajectory of a paper piece that is shaped systematically. The tumbling phenomenon is considered to be an important phenomenon for aircraft flight safety because of the possibility of falling objects from the aircraft reaching far away. Therefore, this paper presents the result of measuring the trajectory of six configurations which shows that Concave configurations have directional stability while the Convex and Rectangular configurations are unstable. For generalization, the experimental result deducted using generalized equations into dimensionless values. Qualitative consideration is given to the relationship between the stall delay caused by sudden pitch motion and the phenomenon of the increase in the maximum vertical force coefficient (so-called Dynamic Lift), and the consistency with the dynamic lift wind tunnel test is shown.

show abstract

Section: Aerodynamic Considerations On Directional Stabilitymentioning

confidence: 77%