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Simulation of Pyrotechnic Driving-locking Process of Aerocraft Door and Swing Suppression Method after Locking
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Sai LIU, Yudi YAO, Kecheng LI, Wenqin KONG, Fangzhou XU
Missiles and Space Vehicles | 2025, 48(3) : 8 - 13
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Missiles and Space Vehicles | 2025, 48(3): 8-13
• Launch Vehicle and Missile •
Simulation of Pyrotechnic Driving-locking Process of Aerocraft Door and Swing Suppression Method after Locking
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Sai LIU, Yudi YAO, Kecheng LI, Wenqin KONG, Fangzhou XU
Affiliations
  • China Academy of Launch Vehicle Technology, Beijing, 100076
Published: 2025-06-25 doi: 10.7654/j.issn.2097-1974.20250302
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In order to study the locking-swing phenomenon and swing suppression method during the pyrotechnic driving-locking process of aerocraft door, an explicit dynamic finite element simulation is conducted for an aircraft door opening-locking mechanism driven by a pyrotechnic actuator. The pyrotechnic driving-locking process of the mechanism is simulated in stages and verified compared with the pyrotechnic driving test. The locking-swing phenomenon and mechanism of the door are revealed, and swing suppression method is proposed. The research shows that the simulation method is effective, reproducing the experimental locking-swing phenomenon, and the swing angle is basically consistent with high-speed photography results. A single-freedom torsional vibration model can be used to estimate the swing characteristics of the door. Increasing the stiffness of the actuator or supported structure, or enhancing the door goose neck, has limited effect on swing suppression. Weakening the door goose neck, making it under plastic deformation during door swing, can effectively suppress the swing angle, and meet the demand for pyrotechnic opening of the door in emergency situations.

pyrotechnic actuator  /  pyrotechnic shock  /  aerocraft door opening  /  swing after locking  /  finite element analysis
Sai LIU, Yudi YAO, Kecheng LI, Wenqin KONG, Fangzhou XU. Simulation of Pyrotechnic Driving-locking Process of Aerocraft Door and Swing Suppression Method after Locking[J]. Missiles and Space Vehicles, 2025 , 48 (3) : 8 -13 . DOI: 10.7654/j.issn.2097-1974.20250302
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doi: 10.7654/j.issn.2097-1974.20250302
  • Receive Date：2024-07-15
  • Online Date：2025-10-27
  • Published：2025-06-25
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  • Received：2024-07-15
  • Revised：2025-03-10
Affiliations
    China Academy of Launch Vehicle Technology, Beijing, 100076
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
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Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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