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Aerospace, Volume 11, Issue 8

August 2024 - 92 articles

Cover Story: A self-aligned focusing schlieren (SAFS) system combines the field of view of a conventional schlieren system with the defocus blur of a focusing schlieren system away from the object plane. Its depth of field is sufficiently shallow to distinguish specific spanwise features in a supersonic flowfield within a 76.2 mm (3 in) wide test section and to blur the boundary layers on the windows. Laser spark velocimetry is performed in Mach 2 flow by tracking the blast wave of a laser spark using 500 kHz SAFS imaging with a 200 ns optical pulse width. The flow Mach number and stagnation temperature are measured by comparing the blast wave dynamics with an analytical solution. Additionally, schlieren image velocimetry is performed by analyzing natural flow perturbations by a self-correlation method. View this paper
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Articles (92)

  • Article
  • Open Access
1 Citations
2,386 Views
23 Pages

Mars Exploration: Research on Goal-Driven Hierarchical DQN Autonomous Scene Exploration Algorithm

  • Zhiguo Zhou,
  • Ying Chen,
  • Jiabao Yu,
  • Bowen Zu,
  • Qian Wang,
  • Xuehua Zhou and
  • Junwei Duan

22 August 2024

In the non-deterministic, large-scale navigation environment under the Mars exploration mission, there is a large space for action and many environmental states. Traditional reinforcement learning algorithms that can only obtain rewards at target poi...

  • Article
  • Open Access
2 Citations
2,370 Views
22 Pages

22 August 2024

Air Traffic Controllers’ (ATCos) mental workload is likely to remain the specific greatest functional limitation on the capacity of the Air Traffic Management (ATM) system. Developing computational models to monitor mental workload and task com...

  • Article
  • Open Access
1 Citations
2,324 Views
14 Pages

Enabling High-Power Conditioning and High-Voltage Bus Integration Using Series-Connected DC Transformers in Spacecrafts

  • Carlos Orts,
  • Ausiàs Garrigós,
  • David Marroquí,
  • Antxon Arrizabalaga and
  • Andreas Franke

21 August 2024

This article proposes a photovoltaic power processor for high-voltage and high-power distribution bus, between 300 V and 900 V, to be used in future space platforms like large space stations or lunar bases. Solar arrays with voltages higher than 100...

  • Article
  • Open Access
3 Citations
1,865 Views
19 Pages

Assembly Simulation and Optimization Method for Underconstrained Frame Structures of Aerospace Vehicles

  • Jinyue Li,
  • Gang Zhao,
  • Jinhua Wei,
  • Zhiyuan Hu,
  • Wenqi Zhang and
  • Pengfei Zhang

21 August 2024

Aerodynamic contour dimensional accuracy is very important for the stable and safe flight of aerospace vehicles. Nevertheless, due to the influence of various factors such as material properties, machining and manufacturing deviations, and assembly a...

  • Article
  • Open Access
2 Citations
5,673 Views
22 Pages

21 August 2024

To expand the application prospects of quadrotors in challenging scenes such as those with dense obstacles and narrow corridors, task-driven reconfigurable quadrotors are highly desirable. Aiming to address hazard missions, in this paper, translation...

  • Article
  • Open Access
8 Citations
4,092 Views
15 Pages

Implementation of a 6U CubeSat Electrical Power System Digital Twin

  • Pablo Casado,
  • Cristian Torres,
  • José M. Blanes,
  • Ausiàs Garrigós and
  • David Marroquí

21 August 2024

This paper presents the design of a digital twin for a 6U CubeSat electrical power system, including the solar arrays, solar array regulators, battery, power distribution unit, and load subsystems. The digital twin is validated by comparing its real-...

  • Article
  • Open Access
5 Citations
1,929 Views
16 Pages

20 August 2024

Power systems on the lunar surface require power lines of varying lengths and capacities to connect generation, storage, and load facilities. These lines must be designed to perform efficiently in the harsh lunar environment, considering factors such...

  • Article
  • Open Access
7 Citations
4,770 Views
18 Pages

Decoys Deployment for Missile Interception: A Multi-Agent Reinforcement Learning Approach

  • Enver Bildik,
  • Antonios Tsourdos,
  • Adolfo Perrusquía and
  • Gokhan Inalhan

20 August 2024

Recent advances in radar seeker technologies have considerably improved missile precision and efficacy during target interception. This is especially concerning in the arenas of protection and safety, where appropriate countermeasures against enemy m...

  • Article
  • Open Access
1,612 Views
17 Pages

20 August 2024

Aimed at addressing the strong nonlinearity and strong external disturbances that cause flight control issues in conventional guided projectiles, as well as the slow response and structural vibrations that often occur in sliding mode control systems,...

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Aerospace - ISSN 2226-4310