Aerodynamic instability early warning method for air inlet channel of hypersonic aero-engine
The invention discloses a hypersonic aero-engine air inlet aerodynamic instability early warning method, which comprises the following steps of: normalizing preprocessed on-way wall surface pressure data characteristics, performing binary classification of starting and non-starting state data based...
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| creator | MIN KE HONG TANGBAO YU LIANCHEN YOU YANCHENG ZENG JIANPING ZHU CHENGXIANG |
| description | The invention discloses a hypersonic aero-engine air inlet aerodynamic instability early warning method, which comprises the following steps of: normalizing preprocessed on-way wall surface pressure data characteristics, performing binary classification of starting and non-starting state data based on a linear SVM (Support Vector Machine) algorithm, and determining an optimal classification surface as a non-starting boundary of the current state of an air inlet; the method comprises the following steps of: determining a non-starting early-warning boundary of the non-starting boundary, judging the instability of the air inlet by using the non-starting boundary, training and evaluating back pressure multiple attributes of on-way wall surface pressure data on the basis of a BP neural network, taking the on-way wall surface pressure of the non-starting boundary and the early-warning boundary as regression input, and determining the instability of the air inlet by using the non-starting boundary. The back pressure |
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The back pressure</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION CALCULATING COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS COMPUTING COSMONAUTICS COUNTING EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS HANDLING RECORD CARRIERS PARACHUTES PERFORMING OPERATIONS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS TRANSPORTING |
| title | Aerodynamic instability early warning method for air inlet channel of hypersonic aero-engine |
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