International Journal of Aerospace System Science and Engineering (5 papers in press)

Regular Issues

• Advancements in the design and development of scramjet engine: an overview  
  by Muhammad Ahmad 
  Abstract: This study aims to overcome the difficulties associated with operating scramjet engines at hypersonic speeds, including the short time required for fuel-air mixing and combustion. A thorough review process is used, with an emphasis on cutting-edge approaches including transverse and cavity-based fuel injection systems. The main conclusions show that cavity-based methods improve mixing efficiency and combustion stability, particularly those with many cavities and geometric changes. Techniques for transverse injection that make use of shock waves and shear layers have the potential to improve mixing and stabilise flames while lowering pressure loss. These developments offer vital information for creating novel scramjet designs that guarantee effective combustion, more thrust, and enhanced performance all around. Through sustained improvement in fuel-air mixing technologies, the study emphasises the relevance of these discoveries for furthering hypersonic aeronautical exploration and transportation.
  Keywords: scramjet; fuel injection; combustion efficiency; mixing rate; flame stabilisation.
  DOI: 10.1504/IJASSE.2025.10070098
   
  
• The design concept of a small technological spacecraft  
  by Andrey Valeryevich Sedelnikov, Anastasiya Sergeevna Taneeva 
  Abstract: The paper describes the concept of designing a small spacecraft for technological purposes, taking into account the requirements for micro-accelerations. It is shown that these requirements significantly affect the design appearance and mass-centring characteristics of a small spacecraft. Questions about the development of a design concept that takes into account the main features of small spacecraft in comparison with other space technology used to implement gravitational-sensitive processes are considered. A feature of the stated concept is that the requirements for micro-accelerations are priority ones, since only their unconditional fulfilment will make it possible to successfully implement gravitational-sensitive technological processes. The obtained results can be used in the design of small technological spacecraft.
  Keywords: small spacecraft; design concept; micro-acceleration; gravitational-sensitive processes.
  DOI: 10.1504/IJASSE.2023.10055071
   
  
• Design and experimental testing of solar UAVS for low altitude and long endurance  
  by Prudhvi S. Bharadwaja Vijaya, Sachin Srivastava, Subham Haldar, Nikhilesh V. Sai, Kadigari Pooja, Sudarshan Shivani, Ajith Raj Rajendran 
  Abstract: This paper discourses the introductory design of a solar unmanned aerial vehicle of low-altitude long-endurance for multiple-day breakouts. The current design is to perform monitoring, hunting, and deliverance operations, and for the delivery purposes of medications, food items, etc. The preliminary design was developed to concentrate on energy operation and flying for further hours for the aircraft to be light. Solar energy is one of the unlimited available renewable powers that can be used to increase the abidance of unmanned aerial vehicles without adding significant mass or adding the size of the energy system. The assessment of solar power availability, designing the unmanned aerial vehicle for long-range breakouts, and calculating the electrical power and energy balance of the unmanned aerial vehicle are some of the factors that are taken into account.
  Keywords: unmanned aerial vehicle; UAV; solar-powered; endurance; battery management; renewable energy.
  DOI: 10.1504/IJASSE.2025.10070096
   
  
• Using photometric data to describe the behaviour of objects in geostationary orbit  
  by Peter Sukhov, V.P. Yepishev, I.I. Motrunich, K.P. Sukhov 
  Abstract: One of the challenges of satellite characterisation is the ability to not only determine the spacecraft orbit, but also satellite operating status, orientation, size, bus type, and material properties. Positional observations allow us to determine and/or update orbital elements of satellites, but they do not afford an insight into the behaviour of a satellite in orbit. The article discusses the results of solving the inverse problem of astrophysics. How you can use photometric, astrometric information about a satellite, its lighting conditions, supplemented by additional information, to understand the behaviour of a satellite in orbit. The results are shown using examples of four satellites in geostationary orbit. An algorithm for calculating the photometric and dynamic characteristics of geostationary objects is provided.
  Keywords: geostationary satellite; GSS; space surveillance awareness; light curve; multi-colour photometry.
  DOI: 10.1504/IJASSE.2021.10039382
   
  
• Carbon nanotube polymer composites for microwave electronics package assembly of space payload: advantages and challenges  
  by Dhaval A. Vartak, Yogesh Ghotekar, Pina M. Bhatt 
  Abstract: Electrical systems of the interconnected packages of space payload depend on the performance of microwave electronics packages (MEP), consisting of Kovar carrier plates (CPs). The indigenous development of CFRP-based MEP and CPs are a possible replacement to reduce the mass by six times. Carbon nanotubes (CNTs) can be added to the polymer, resulting in the improvement of thermal and electrical parameters. It is advantageous to use CNT CFRP composite MEP for interplanetary space missions where the mass is critical design criteria without degrading the performance of the payload. There are some challenges to study before the fabrication of composite and identify the effect of CNT content on the composite's properties. This paper also highlights space qualification process required for validation of the microwave electronics package for space payloads. The CNT-CFRP composite package can save a mass 62% than traditional space qualified material.
  Keywords: microwave electronics package; MEP; carrier plates; CPs; carbon fibre reinforced polymers; CFRP; carbon nanotubes; CNTs; carbon nanotubes composites; thermal and electrical properties; space payload.
  DOI: 10.1504/IJASSE.2021.10036733