Aerodynamic Drag of a Tilt-Rotor UAV During Forward Flight in Rotary-Wing Mode-Reference-Cited by-同舟云学术

Aerodynamic Drag of a Tilt-Rotor UAV During Forward Flight in Rotary-Wing Mode

Published:2023-04-20 Issue:2 Volume:35 Page:417-423
ISSN:1883-8049
Container-title:Journal of Robotics and Mechatronics
language:en
Short-container-title:J. Robot. Mechatron.

Author:

Urakubo Takateru¹^ORCID,Wada Koki¹,Sabe Kohtaro²^ORCID,Hirai Shinji²,Miwa Masafumi³

Affiliation:

1. Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan

2. Aerosense Inc., 5-41-10 Koishikawa, Bunkyo-ku, Tokyo 112-0002, Japan

3. Tokushima University, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan

Abstract

This paper examines the aerodynamic drag force acting on a tilt-rotor UAV that has three mini fans and a main rotor with a tilt mechanism. The mini fans are embedded in the nose and the left and right wings. The main rotor is located near the center of the vehicle, and its front half is surrounded by the trailing edge of the nose in rotary-wing mode. The downward airflow from the fans and the main rotor generates an aerodynamic drag force called momentum drag, which is linearly proportional to the airspeed of UAV. To verify the existence of momentum drag, parameter identification of drag coefficients is performed from experimental data where the UAV flies forward in rotary-wing mode. The drag force is also investigated using computational fluid dynamics simulations. These experimental and numerical results are consistent with theoretical results based on momentum theory.

Funder

Kawanishi Memorial ShinMaywa Education Foundation

Publisher

Fuji Technology Press Ltd.

Subject

Electrical and Electronic Engineering,General Computer Science

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