NSTL国家科技图书文献中心

1. Analytical Characterization of Low-Frequency Instabilities in a Simple Duct System NSTL国家科技图书文献中心

Burinthorn Suksupaet | Daesik Kim - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(1) - 186～195 - 共10页

摘要：Low-frequency bulk instabilities are prevalent | phenomena encountered in various combustion systems | including laminar burners, gas turbine combustors, rockets | , and ramjets. These instabilities, known as bulk or | Helmholtz instabilities, are pronounced in combustors with

关键词： Helmholtz mode | 1D analytical acoustic | Simple duct system | Combustion instability

2. Research on Virtual Prototype and Digital Test Method of Pump-Fed Propulsion System NSTL国家科技图书文献中心

Xiaopu Zhang | Yang Li ... - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(2) - 815～833 - 共19页

摘要：Regarding the difficulty in designing the | complex propulsion system, research on the virtual | prototype and digital testing methods of the pump-fed | propulsion system was carried out. A set of generalized | mathematical models of the propulsion system was built based

关键词： Propulsion system | Liquid rocket engine | System simulation | Model calibration | Surrogate model | Uncertainty quantification

3. Reduced-Order Sliding Mode Observer-Based Backstepping Integral Logarithmic Sliding Mode Control: Application to Wing Aeroelastic System NSTL国家科技图书文献中心

Ahmad Mahmood | Fazal ur Rehman ... - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(2) - 650～661 - 共12页

摘要：The suppression of limit cycle oscillations | generated by the interplay of structure, inertia, and | aerodynamics in a wing aeroelastic system is investigated in | this paper. To estimate the plunge rate in wing | aeroelastic system, a reduced-order sliding mode observer

关键词： Aeroelastic | Pitch angle | Plunge displacement | Sliding mode observer | Natural logarithmic attractor | Backestepping | Integral | Sliding mode control

4. Small Airborne Object Recognition with Image Processing for Feature Extraction NSTL国家科技图书文献中心

Hoseop Lee | Sungwook Cho ... - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(1) - 220～234 - 共15页

摘要：Drones are no longer being used for benevolent | purposes. They are increasingly intruding in the vicinity | of strategic national facilities, such as airports | , nuclear power plants, and government buildings | . Regrettably, in the recent Russia-Ukraine war or drone

关键词： Small airborne object detection | Image processing | Drone/bird classification | Data augmentation

5. Neural Adaptive Sliding Mode Control for Camera Positioner Quadrotor UAV NSTL国家科技图书文献中心

Ahmad Mahmood | Fazal ur Rehman ... - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(2) - 733～747 - 共15页

摘要：In the context of quadrotor UAV-based | manipulation, it is important to achieve feedback control | with faster convergence. However, achieving robust | control and tuning of manipulator systems faces several | challenges related to trajectory tracking due to parametric

关键词： Camera positioner system | Quadrotor | Nonlinear sliding surface | Sliding mode control | Radial basis function | Neural network | Settling time | Overshoot

6. Improved Design of Beach Ball Constellation for Constant Revisit Time in LEO Reconnaissance NSTL国家科技图书文献中心

Jaewook Lim | Kyung-Mi Park ... - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(1) - 287～301 - 共15页

摘要：Recent conflicts, such as the Ukrainian war | , highlight the need for advanced surveillance methods | . Small satellite constellations present cost-effective | solutions for surveillance missions. In light of the | increasing significance of cross-border intelligence

关键词： Beach ball constellation | Reconnaissance | Constant revisit time | Collision inspection | Sun-synchronous orbit | Repeat ground track

7. Thermal Design Analysis of Low Earth Orbit Optical Telescope ROKITS NSTL国家科技图书文献中心

Jaegun Yoo | Jeong-Yeol Han ... - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(2) - 834～846 - 共13页

摘要：The space thermal environment poses | significant challenges due to its vacuum conditions, low | pressure, and extreme temperature fluctuations. In Low | Earth Orbit (LEO) spacecraft, the duration of the | eclipse during each orbit complicates the maintenance of

关键词： Space optical telescope | Space telescope | Thermal control design | Thermal analysis | LEO spacecraft | Space environment | Thermal desktop | SINDA/FLUINT

8. Crashworthiness of Energy Absorbing Structures Under Combined Shear-Compression Loading: Effects of Materials and Geometries NSTL国家科技图书文献中心

Yong-Ha Hwang | Jae-Hung Han - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(2) - 615～628 - 共14页

摘要：In this paper, a study on the design of energy | absorbing structures under combined shear-compression | loading is conducted to effectively utilize the energy | absorption principles of the material. Concave and convex | designs are applied to energy absorbing structures made

关键词： Combined shear-compression loading | Crashworthiness | Drop impact test | Metallic material | Braided composite

9. Combustion Characteristics of Shear Coaxial Injectors with Different Recess Lengths Under Wide Operating Conditions NSTL国家科技图书文献中心

Cheolwoong Kang | Shinwoo Lee ... - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(1) - 172～185 - 共14页

摘要：The advancement of space launch technologies | necessitates engines with a broad thrust control range. This | study examines the impact of injector recess length on | combustion performance in shear coaxial injectors, crucial | for liquid rocket engines using methane. This

关键词： Characteristic velocity | Heat flux | Hot-firing test | Pressure fluctuation | Recess length | Shear coaxial injector

10. Assessment of the Wave-Shaped Surface of Wingsuit on Aerodynamic Performance NSTL国家科技图书文献中心

Mohsen Nazemian Alae... | Mohammad Sadegh Vali... - 《International Journal of Aeronautical and Space Sciences》 - 2025,26(2) - 391～412 - 共22页

摘要：The performance of an athlete in the wingsuit | industry relies on several factors. One crucial factor is | the aerodynamics of the geometric shape, which can | be improved by modifying the shape. The aerodynamic | efficiency of a wingsuit is determined by its surface shape

摘要：Low-frequency bulk instabilities are prevalent | phenomena encountered in various combustion systems | including laminar burners, gas turbine combustors, rockets | , and ramjets. These instabilities, known as bulk or | Helmholtz instabilities, are pronounced in combustors with

关键词： Helmholtz mode | 1D analytical acoustic | Simple duct system | Combustion instability

摘要：Regarding the difficulty in designing the | complex propulsion system, research on the virtual | prototype and digital testing methods of the pump-fed | propulsion system was carried out. A set of generalized | mathematical models of the propulsion system was built based

关键词： Propulsion system | Liquid rocket engine | System simulation | Model calibration | Surrogate model | Uncertainty quantification

摘要：The suppression of limit cycle oscillations | generated by the interplay of structure, inertia, and | aerodynamics in a wing aeroelastic system is investigated in | this paper. To estimate the plunge rate in wing | aeroelastic system, a reduced-order sliding mode observer

关键词： Aeroelastic | Pitch angle | Plunge displacement | Sliding mode observer | Natural logarithmic attractor | Backestepping | Integral | Sliding mode control

摘要：Drones are no longer being used for benevolent | purposes. They are increasingly intruding in the vicinity | of strategic national facilities, such as airports | , nuclear power plants, and government buildings | . Regrettably, in the recent Russia-Ukraine war or drone

关键词： Small airborne object detection | Image processing | Drone/bird classification | Data augmentation

摘要：In the context of quadrotor UAV-based | manipulation, it is important to achieve feedback control | with faster convergence. However, achieving robust | control and tuning of manipulator systems faces several | challenges related to trajectory tracking due to parametric

关键词： Camera positioner system | Quadrotor | Nonlinear sliding surface | Sliding mode control | Radial basis function | Neural network | Settling time | Overshoot

摘要：Recent conflicts, such as the Ukrainian war | , highlight the need for advanced surveillance methods | . Small satellite constellations present cost-effective | solutions for surveillance missions. In light of the | increasing significance of cross-border intelligence

关键词： Beach ball constellation | Reconnaissance | Constant revisit time | Collision inspection | Sun-synchronous orbit | Repeat ground track

摘要：The space thermal environment poses | significant challenges due to its vacuum conditions, low | pressure, and extreme temperature fluctuations. In Low | Earth Orbit (LEO) spacecraft, the duration of the | eclipse during each orbit complicates the maintenance of

关键词： Space optical telescope | Space telescope | Thermal control design | Thermal analysis | LEO spacecraft | Space environment | Thermal desktop | SINDA/FLUINT

摘要：In this paper, a study on the design of energy | absorbing structures under combined shear-compression | loading is conducted to effectively utilize the energy | absorption principles of the material. Concave and convex | designs are applied to energy absorbing structures made

关键词： Combined shear-compression loading | Crashworthiness | Drop impact test | Metallic material | Braided composite

摘要：The advancement of space launch technologies | necessitates engines with a broad thrust control range. This | study examines the impact of injector recess length on | combustion performance in shear coaxial injectors, crucial | for liquid rocket engines using methane. This

关键词： Characteristic velocity | Heat flux | Hot-firing test | Pressure fluctuation | Recess length | Shear coaxial injector

摘要：The performance of an athlete in the wingsuit | industry relies on several factors. One crucial factor is | the aerodynamics of the geometric shape, which can | be improved by modifying the shape. The aerodynamic | efficiency of a wingsuit is determined by its surface shape

关键词： Wingsuit | Aerodynamic coefficients | Flow visualization | Tuft | Computational fluid dynamics | RSM

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