Design and Simulation of Variable Area Jet Nozzle with Asymmetrical Attitude Simulation

doi:10.3901/JME.2018.02.184

Abstract

Abstract: Free jet nozzle with variable area and variable attitude, for their ability to maximize test cell capacity, reduce costs and adjust quickly, etc., had become the new trend of ground wind tunnel test research. To resolve the contradiction between the airflow capacity requirements that to meet the different propulsion systems ground test required in the wide angle of attack range and the physical space requirements of test chamber, moreover, it had the ability to simulate true altitude, Mach number and attitude, an attitude simulation jet nozzle based on asymmetry robotic manipulator was proposed. According to the test chamber structure and modern aircraft flight envelope, the free jet nozzle design specifications and initial flow field layout were identified. A 2-RRR robotic manipulator mechanism mathematical model was built, and the computation via Deanvit-Hartenberg (D-H)method and solving research of mechanism was carried out. Finally, through the simulation, the jet nozzle functional fulfillment was analyzed, and the design scheme feasibility was validated for the jet nozzle investigate and development established foundation.

Key words: asymmetry, attitude simulation, free jet, nozzle, robotic manipulator, variable area, wind tunnel

CLC Number:

V211

CHEN Pengfei, WU Feng, XU Quanyong, PENG Jin, XU Qiannan. Design and Simulation of Variable Area Jet Nozzle with Asymmetrical Attitude Simulation[J]. Journal of Mechanical Engineering, 2018, 54(2): 184-190.

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