Wind Tunnel Testing on Start/Unstart Characteristics of Finite Supersonic Biplane Wing
Author(s) -
Hiroshi Yamashita,
Naoshi Kuratani,
Masahito Yonezawa,
Toshihiro Ogawa,
Hiroki Nagai,
Keisuke Asai,
Shigeru Obayashi
Publication year - 2013
Publication title -
international journal of aerospace engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.361
H-Index - 22
eISSN - 1687-5974
pISSN - 1687-5966
DOI - 10.1155/2013/231434
Subject(s) - biplane , algorithm , computer science , materials science , composite material
This study describes the start/unstart characteristics of a finite and rectangular supersonic biplane wing. Two wing models were tested in wind tunnels with aspect ratios of 0.75 (model A) and 2.5 (model B). The models were composed of a Busemann biplane section. The tests were carried out using supersonic and transonic wind tunnels over a Mach number range of 0.3≤M∞≤2.3 with angles of attack of 0°, 2°, and 4°. The Schlieren system was used to observe the flow characteristics around the models. The experimental results showed that these models had start/unstart characteristics that differed from those of the Busemann biplane (two dimensional) owing to three-dimensional effects. Models A and B started at lower Mach numbers than the Busemann biplane. The characteristics also varied with aspect ratio: model A (1.3
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