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Aerospace, Volume 11, Issue 9

September 2024 - 95 articles

Cover Story: Numerical simulations are performed for flows over a circular cylinder at a Reynolds number ranging from 150 to 5000 assess the predictive capability of different turbulence and hybrid RANS-LES models for acoustic wave generation and propagation. In addition, direct numerical simulations (DNS) are utilized to generate validation datasets and to provide more insight into any issues. The DNS predictions demonstrate that noise induced by the vortex shedding is radiated primarily at a 90-degree angle with respect to the wake direction, and it dictates the dominant frequency of the sound pressure waves. Turbulence dominates the noise in the near-field wake, resulting in a broadband pressure spectrum. View this paper
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Articles (95)

  • Article
  • Open Access
2 Citations
1,498 Views
16 Pages

23 September 2024

This paper focuses on the active removal of spent upper stages from LEO using de-orbiting devices. It proposes a method of regulating aerodynamic loads on the target during its re-entry by utilizing the features of spatial attitude motion. A mathemat...

  • Article
  • Open Access
2,148 Views
31 Pages

23 September 2024

The Cislunar economy is thriving with innovative space systems and operation techniques to enhance and uplift the traditional approaches significantly. This paper brings about an approach for sustainable small satellite constellations to retain auton...

  • Article
  • Open Access
4 Citations
2,767 Views
32 Pages

23 September 2024

Due to the strong nonlinearity in the reentry trajectory planning problem for reusable launch vehicles (RLVs), the scale of the problem after high-precision discretization can become significantly large, and the non-convex path constraints are prone...

  • Article
  • Open Access
1 Citations
1,199 Views
13 Pages

23 September 2024

A model-based surface fluvial erosion and deposition approach was adapted to Martian conditions to forecast the potential locations for shallow subsurface sampling by the Rosalind Franklin ExoMars rover at Oxia Planum. While remote and on-site images...

  • Article
  • Open Access
2 Citations
1,447 Views
25 Pages

23 September 2024

In this study, a disk-type bluff body was installed at the upper part of a nozzle exit, and the circular jet inside the nozzle was controlled using a dielectric barrier discharge (DBD) plasma actuator (DBD-PA). The effects of the changes in the excit...

  • Article
  • Open Access
2,084 Views
14 Pages

23 September 2024

Tensegrity is a lightweight, self-stressing, and self-stabilizing structure made up of cables and bars, with each member bearing either tension or compression but not affected by shear stress. This design allows for optimal utilization of the materia...

  • Article
  • Open Access
1,400 Views
13 Pages

22 September 2024

In order to study the effect of the circulation control technology on the electromagnetic scattering characteristics of the wing, a variety of low-scattering carrier models were designed based on the characteristics of the circulation control wing an...

  • Article
  • Open Access
1 Citations
1,851 Views
15 Pages

20 September 2024

Proper prediction of the temperature variation in a metallic wire mesh for spaceborne large deployable reflector antennas is essential for evaluating the dimensional stability of the antenna under extreme on-orbit thermal environments. However, predi...

  • Article
  • Open Access
1 Citations
1,311 Views
18 Pages

20 September 2024

This paper investigates the fixed-time tracking control problem for agile missiles with multiple heterogeneous actuators in the presence of saturation constraints and external disturbances. To reduce the turning radius and promote maneuvering envelop...

  • Article
  • Open Access
2 Citations
1,154 Views
24 Pages

20 September 2024

Microsatellites have significantly impacted space missions by offering advanced technology at a low cost. This study introduces an attitude determination and control algorithm for agile whiskbroom scanning maneuvers in microsatellites to enable wide-...

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Aerospace - ISSN 2226-4310