Integrated design of monorail rocket sled and motor

HAO Fenfen; ZHAO Xiangwei; WANG Lei; CHENG Mingcan; LIU Jin

doi:10.11883/bzycj-2023-0259

Volume 44 Issue 5

May 2024

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HAO Fenfen, ZHAO Xiangwei, WANG Lei, CHENG Mingcan, LIU Jin. Integrated design of monorail rocket sled and motor[J]. Explosion And Shock Waves, 2024, 44(5): 052901. doi: 10.11883/bzycj-2023-0259

Citation:

HAO Fenfen, ZHAO Xiangwei, WANG Lei, CHENG Mingcan, LIU Jin. Integrated design of monorail rocket sled and motor[J]. Explosion And Shock Waves, 2024, 44(5): 052901. doi: 10.11883/bzycj-2023-0259

HAO Fenfen, ZHAO Xiangwei, WANG Lei, CHENG Mingcan, LIU Jin. Integrated design of monorail rocket sled and motor[J]. Explosion And Shock Waves, 2024, 44(5): 052901. doi: 10.11883/bzycj-2023-0259

Citation:

HAO Fenfen, ZHAO Xiangwei, WANG Lei, CHENG Mingcan, LIU Jin. Integrated design of monorail rocket sled and motor[J]. Explosion And Shock Waves, 2024, 44(5): 052901. doi: 10.11883/bzycj-2023-0259

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Integrated design of monorail rocket sled and motor

doi: 10.11883/bzycj-2023-0259

HAO Fenfen^{1, 2
,},
ZHAO Xiangwei^{2
,
,},
WANG Lei²,
CHENG Mingcan²,
LIU Jin²

1.
School of Aerospace Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
2.
Norinco Group Test and Measuring Academy, Huayin 714200, Shaanxi, China

Received Date: 2023-07-21
Rev Recd Date: 2024-01-22

Available Online: 2024-03-04

Publish Date: 2024-05-08

Abstract

Abstract

The solid rocket motor is the only power source of the system in the rocket sled test, the traditional monorail rocket sled generally consists of the rocket motor, the motor mounting components, the reinforced longitudinal beam and the slippers, in which only the test object and the motor charge are effective mass, while the rest of the structures are additional mass, so reducing the additional mass can improve the thrust-to-weight ratio of the rocket sled system. In response to the problem of excessive mass added to the components of the conventional monorail rocket sled system, an integrated rocket sled and motor structure consisting of motor and slippers is proposed. The three-dimensional Euler-Bernoulli beam unit is used to discretize the rocket sled system and obtain the optimal distribution position of the slippers, then it is found that the vibration is minimized when the middle slipper is located between the front slipper and the back slipper. Three options for connecting the slipper to the motor housing are designed: in the first option the slipper is wrapped and connected to the motor housing by serrated welds; in the second one the motor housing is stacked directly on the slipper body; and in the third one the motor housing is connected to the slipper by supported transition plates. A comparative analysis of the on-rail safety of the latter two options is performed using the sled-rail coupling dynamics method, which indicates that the mechanical environment of the integrated rocket sled is better when the sled slippers and the motor housing are connected by the supported plates as transition structures, and the additional mass of the system is reduced by 73% compared to that of the traditional monorail sled. Finally, the validation test of the integrated motor with sled validation test was implemented and the collected data were analyzed, showing that: the integrated motor with sled proposed in this paper is reasonable and feasible, and the motor vibration level is comparable to that of the traditional rocket sled.
- rocket sled,
- solid rocket motor,
- integrated motor with sled,
- vibration

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References(23)

References

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