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2006•JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCESOpen access

Lift Enhancement of Delta Wing with a Hybrid Method of Leading Edge Rotation and Trailing Edge Jet

Daisuke Azuma, Yoshiaki Nakamura

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Abstract

The low-speed flow for a 45deg-swept delta wing is numerically simulated to examine the effects of a hybrid method consisting of leading edge rotation and trailing edge jet on aerodynamic forces. Computation has been performed at an angle of attack of 20deg and a Reynolds number of 2.0×104 based on the wing root chord. Under these conditions, the flow is fully separated from the wing surface, so that no suction peaks due to leading edge vortices are observed over the upper surface of the wing. By using the hybrid method, lift coefficient can become 85% higher than that of the baseline delta wing without any high lift device.

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What this paper is about

The low-speed flow for a 45deg-swept delta wing is numerically simulated to examine the effects of a hybrid method consisting of leading edge rotation and trailing edge jet on aerodynamic forces. Computation has been performed at an angle of attack of 20deg and a Reynolds number of 2.0×104 based on the wing root chord. Under these conditions, the flow is fully separated from the wing surface, so that no suction peaks due to leading edge vortices are observed over the upper surface of the wing. By using the hybrid method, lift coefficient can become 85% higher than that of the baseline delta wing without any high lift device.

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Available abstract

The low-speed flow for a 45deg-swept delta wing is numerically simulated to examine the effects of a hybrid method consisting of leading edge rotation and trailing edge jet on aerodynamic forces. Computation has been performed at an angle of attack of 20deg and a Reynolds number of 2.0×104 based on the wing root chord. Under these conditions, the flow is fully separated from the wing surface, so that no suction peaks due to leading edge vortices are observed over the upper surface of the wing. By using the hybrid method, lift coefficient can become 85% higher than that of the baseline delta wing without any high lift device.

Key concepts: Wing, Trailing edge, Delta wing, Lift coefficient, Chord (peer-to-peer), Leading edge, Mechanics, Wing twist

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