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Aerospace, Volume 9, Issue 10

October 2022 - 103 articles

Cover Story: Propulsion systems based on storable bipropellants have relied on hydrazine/nitrogen tetroxide and other toxic variants for a long time. At present, a clear intent to find alternative “green” solutions has been established in both the scientific and industrial communities. "Green propulsion" is a wide concept, regarding both the environment and humans, and is related to the life cycle of a propulsion technology, extending to the awareness of the long-term effects caused by its use. This paper compares alternative storable propellant couples. The analysis presents a wide database, including physical properties, performance, and toxicity, and proposes a methodology to create a common rank. The paper underlines that a unique solution does not exist, but rather, each mission leads to dedicated optimal options. View this paper
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Articles (103)

  • Article
  • Open Access
5 Citations
2,958 Views
25 Pages

21 October 2022

Hypersonic vehicles are an important area of research in the aerospace field today. One of the important issues is the power of the engine. In order to achieve large-span flight speeds, a more efficient approach is to use combined power systems. Howe...

  • Article
  • Open Access
1 Citations
2,449 Views
18 Pages

Numerical Study on Improved Geometry of Outlet Pressure Ripple in Parallel 2D Piston Pumps

  • Yu Huang,
  • Qianqian Lu,
  • Wei Shao,
  • Li Liu,
  • Chuan Ding and
  • Jian Ruan

21 October 2022

Because the axial piston pump is often used in the aerospace and aviation fields, it is necessary to pay attention to its outlet pressure and flow characteristics. The parallel 2D piston pump proposed, based on the axial piston pump, has no structura...

  • Article
  • Open Access
4 Citations
2,709 Views
16 Pages

Stability Enhancement and Noise Reduction of an Axial Compressor with Foam Metal Casing Treatment

  • Jia Li,
  • Xu Dong,
  • Dakun Sun,
  • Yuqing Wang,
  • Chunwang Geng and
  • Xiaofeng Sun

21 October 2022

Foam metal is a foam-like substance with a high porosity; it has been used in flow control, vibration abatement, and acoustic absorption, mainly based on its physical properties. The aim of the current paper is to investigate the effect of foam metal...

  • Article
  • Open Access
7 Citations
2,209 Views
12 Pages

Influence of Gas-to-Wall Temperature Ratio on the Leakage Flow and Cooling Performance of a Turbine Squealer Tip

  • Dongjie Yan,
  • Hongmei Jiang,
  • Jieling Li,
  • Wenbo Xie,
  • Zhaoguang Wang,
  • Shaopeng Lu and
  • Qiang Zhang

20 October 2022

In high-pressure turbines, there is a large difference in temperature between the mainstream and the turbine blade surface. Most of the turbine blade tip heat transfer studies were conducted under the assumption that the Over-Tip-Leakage (OTL) flow f...

  • Article
  • Open Access
2 Citations
3,283 Views
21 Pages

20 October 2022

The radome refraction problem gives rise to guidance performance deterioration for homing missiles. Aiming to eliminate the effect of radome refraction on the radar seeker, a novel method is proposed for correcting the radome-induced measurement erro...

  • Article
  • Open Access
5 Citations
2,222 Views
15 Pages

20 October 2022

The present paper focuses on the Lagrange optimization of shock waves for a two-dimensional hypersonic inlet by limiting the cowl internal angle and inlet length. The results indicate the significant influences of geometric constraints on the configu...

  • Article
  • Open Access
7 Citations
3,218 Views
19 Pages

20 October 2022

Fuel burn accounts for up to 25% of an aircraft’s total operating cost and has become one of the most important decision factors in the airline industry. Hence, prudent fuel estimation is essential for airlines to ensure smooth operation in the...

  • Article
  • Open Access
1 Citations
2,588 Views
25 Pages

A New Mapped WENO Method for Hyperbolic Problems

  • U S Vevek,
  • Bin Zang and
  • T. H. New

19 October 2022

In this study, a new family of rational mapping functions gRM(ω;k,m,s) is introduced for seventh-order WENO schemes. gRM is a more general family of mapping functions, which includes other mapping functions such as gM and gIM as special cases....

  • Article
  • Open Access
11 Citations
5,934 Views
25 Pages

Research on Trajectory Prediction of a High-Altitude Zero-Pressure Balloon System to Assist Rapid Recovery

  • Jiwei Tang,
  • Shumin Pu,
  • Peixi Yu,
  • Weicheng Xie,
  • Yunfei Li and
  • Binxing Hu

19 October 2022

A comprehensive simulation model is established to predict the trajectory of a high-altitude zero-pressure balloon flight system with no parachute that is required to carry the load floating at the designated altitude for several hours or less. A ser...

  • Article
  • Open Access
7 Citations
3,617 Views
13 Pages

19 October 2022

Turbine-based combined cycle (TBCC) engines are one of the ideal powers for reusable air-breathing supersonic aircraft, but the flight/propulsion integrated control and mode transition restricts its use. This paper takes the Mach 4 over-under TBCC en...

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Aerospace - ISSN 2226-4310