Characterizing Instrumentation Canister Aerodynamics of FAAM BAe-146-301 Atmospheric Research Aircraft

被引：0
|
作者：
Bennett, C. J. [1 ]
Nott, G. J. [2 ]
Wellpott, A. [2 ]
Lawson, N. [1 ]
Delise, M. [1 ]
Woodcock, B. [3 ]
Gratton, G. B. [2 ]
机构：
[1] Cranfield Univ, Natl Flying Lab Ctr, Sch Aerosp Transport & Mfg, Cranfield MK43 0AL, Beds, England
[2] Cranfield Univ, Facil Airborne Atmospher Measurements, Bldg 146,Coll Rd, Cranfield MK43 0AL, Beds, England
[3] Aventech Res Inc, 756 Huronia Rd, Barrie, ON L4N 6C6, Canada
来源：
JOURNAL OF AEROSPACE ENGINEERING | 2019年 / 32卷 / 04期
关键词：
SIDESLIP ANGLE VANES; CFD SIMULATION; OF-ATTACK; FLOW;
D O I：
10.1061/(ASCE)AS.1943-5525.0001044
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
A computational fluid dynamics (CFD) investigation was aimed at accurately predicting the air flow characteristics in the vicinity of underwing-mounted instruments on the Facility for Airborne Atmospheric Measurement's (FAAM) BAe-146-301. Perturbation of the free stream airflow as it passes through the region of detection of the underwing instruments may lead to additional uncertainties in the measurement of clouds and cloud particles. The CFD model was validated with flight data from an Aircraft-Integrated Meteorological Measurement System (AIMMS-20) in a wing-mounted instrument canister. Flow predictions showed a consistent slowing from the true air speed of the aircraft in the longitudinal direction and the introduction of horizontal and vertical flows up to 10% of the air speed. The potential impact of these flow perturbations on sizing of particles with cloud imaging probes was modeled. Sizing errors were dependent on the methodology used and the shape of the particle; those due to transverse flows remained very small but mis-sizing due to unaccounted longitudinal flow perturbations were potentially more serious. (c) 2019 American Society of Civil Engineers.
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页数：8
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