Outputs (14)

Optimization of MMX relative quasi-satellite transfer trajectories using primer vector theory (2024)
Journal Article
Pushparaj, N., Baresi, N., & Kawakatsu, Y. (2024). Optimization of MMX relative quasi-satellite transfer trajectories using primer vector theory. Acta Astronautica, 225, 390-401. https://doi.org/10.1016/j.actaastro.2024.09.031

Quasi-satellite orbits (QSO) are stable retrograde parking orbits around Phobos that are currently being considered for JAXA’s upcoming robotic sample return mission Maritan Moons Exploration (MMX). During the proximity operations o... Read More about Optimization of MMX relative quasi-satellite transfer trajectories using primer vector theory.

Towards isolated roughness induced boundary layer transition at supersonic speeds (2024)
Journal Article
González, L. E. M., & Dakka, S. M. (2024). Towards isolated roughness induced boundary layer transition at supersonic speeds. International Journal of Scientific and Technical Research in Engineering, 9(2), 1-16

The height of surface roughness elements affects the onset of laminar to turbulent transition in a boundary layer. CFD studies have been accomplished using RANS models at very low speeds, as a first step towards the understanding of this technology i... Read More about Towards isolated roughness induced boundary layer transition at supersonic speeds.

Breaking the Cycle: Novel Capture Mechanisms for Active Space Debris Removal (2023)
Presentation / Conference Contribution
Taggart, A., Harris, J., Pushparaj, N., & Cappelletti, C. (2023). Breaking the Cycle: Novel Capture Mechanisms for Active Space Debris Removal.

Since the launch of Sputnik 1 in 1957, over 6000 rockets and more than 11,300 satellites have been launched into space, resulting in a high number of artificial space debris in orbit around Earth. Of this debris, there are over one million objects be... Read More about Breaking the Cycle: Novel Capture Mechanisms for Active Space Debris Removal.

Frequent Deep-Space Access Strategy for Venus Aeronomic Exploration Mission using Earth-Synchronous Orbits (2023)
Presentation / Conference Contribution
Ito, D., Pushparaj, N., & Kawakatsu, Y. (2023). Frequent Deep-Space Access Strategy for Venus Aeronomic Exploration Mission using Earth-Synchronous Orbits.

Geostationary transfer orbits (GTO) are earth-centric orbits widely used for kick-stage operations of satellites for deep space exploration missions. A rideshare spacecraft parked or deployed in GTOs usually requires minimal transfer cost compared to... Read More about Frequent Deep-Space Access Strategy for Venus Aeronomic Exploration Mission using Earth-Synchronous Orbits.

Quasi-solar Synchronous Orbit around the Moon based on Spatial Distant Retrograde Orbits (2023)
Presentation / Conference Contribution
Peng, L., Liang, Y., Pushparaj, N., & Shi, P. (2023). Quasi-solar Synchronous Orbit around the Moon based on Spatial Distant Retrograde Orbits.

The last several decades have witnessed the rapid development of lunar exploration, promoting researches on various types of lunar orbits including Distant Retrograde Orbits (abbr. DRO) that are feasible for orbiting tasks due to their stability. Man... Read More about Quasi-solar Synchronous Orbit around the Moon based on Spatial Distant Retrograde Orbits.

Optimal Transfer Trajectories between Relative Quasi-Satellite Orbits (2023)
Presentation / Conference Contribution
Pushparaj, N., Hiraiwa, N., & Bando, M. (2023). Optimal Transfer Trajectories between Relative Quasi-Satellite Orbits.

Quasi-satellite orbits (QSOs) are stable retrograde orbits in the restricted three-body problem that have gained attention as a viable candidate for future deep-space missions towards remote planetary satellites. Several mission design proposal uses... Read More about Optimal Transfer Trajectories between Relative Quasi-Satellite Orbits.

Numerical Analysis of Aerospike Engine Nozzle Performance at Various Truncation Lengths (2021)
Journal Article
Dakka, S., & Dennison, O. (2021). Numerical Analysis of Aerospike Engine Nozzle Performance at Various Truncation Lengths. International Journal of Aviation, Aeronautics, and Aerospace, 8(2), Article 12. https://doi.org/10.15394/ijaaa.2021.1601

The aerospike engine was first devised in the early 1960s where it provided new means of reaching orbit in a single stage. The paper aimes to demonstrate the viability of the technology by showcasing the increased nozzle thrust efficiency over the co... Read More about Numerical Analysis of Aerospike Engine Nozzle Performance at Various Truncation Lengths.

Performance Characteristics Design of Pulsed Plasma Thrusters for Drag Counter-Reacting (2020)
Journal Article
Dakka, S. (2020). Performance Characteristics Design of Pulsed Plasma Thrusters for Drag Counter-Reacting. International Journal of Aviation, Aeronautics, and Aerospace, 7(4), Article 1. https://doi.org/10.15394/ijaaa.2020.1530

Determining the performance characteristics of off the shelf pulsed plasma thrusters to enhance the life time of low earth orbiting platforms was investigated theoretically. Pulsed plasma thruster analysis was accomplished through development of corr... Read More about Performance Characteristics Design of Pulsed Plasma Thrusters for Drag Counter-Reacting.

Aerodynamic Design and Exploration of a Blended Wing Body Aircraft at Subsonic Speed (2019)
Journal Article
Dakka, S., & Johnson, O. (2019). Aerodynamic Design and Exploration of a Blended Wing Body Aircraft at Subsonic Speed. International Journal of Aviation, Aeronautics, and Aerospace, 6(5), Article 17

Blended Wing Body (BWB) is a novel aircraft concept which provides many different aerodynamic benefits over conventional aircrafts design. This research investigated the BWB design, L/D characteristics, surface pressure distribution and span-wise lif... Read More about Aerodynamic Design and Exploration of a Blended Wing Body Aircraft at Subsonic Speed.

Feasibility of Utilizing Current Propulsion Technologies in Support of Very Low Earth Observation Space Platforms (2019)
Presentation / Conference Contribution
Dakka, S. (2019). Feasibility of Utilizing Current Propulsion Technologies in Support of Very Low Earth Observation Space Platforms.

An emerging low earth orbit spacecraft platform is being sought after due to many advantages of operation at low earth orbits of altitude less than 450Km. These encompasses better imagery and enhanced communications capabilities in addition of space... Read More about Feasibility of Utilizing Current Propulsion Technologies in Support of Very Low Earth Observation Space Platforms.

Computational fluid dynamics investigation into flow behavior and acoustic mechanisms at the trailing edge of an airfoil (2018)
Journal Article
Jackson, B. R., & Dakka, S. M. (2018). Computational fluid dynamics investigation into flow behavior and acoustic mechanisms at the trailing edge of an airfoil. Noise and Vibration Worldwide, 49(1), 20-31. https://doi.org/10.1177/0957456517751455

© The Author(s) 2018. Airfoil self-noise or trailing edge noise and shear noise were investigated computationally for a NACA 0012 airfoil section, focusing on noise mechanisms at the trailing edge to identify and understand sources of noise productio... Read More about Computational fluid dynamics investigation into flow behavior and acoustic mechanisms at the trailing edge of an airfoil.

Design, development and testing of shape shifting wing model (2017)
Journal Article
Ninian, D., & Dakka, S. M. (2017). Design, development and testing of shape shifting wing model. Aerospace, 4(4), Article 52. https://doi.org/10.3390/aerospace4040052

The design and development of morphing (shape shifting) aircraft wings—an innovative technology that has the potential to increase the aerodynamic efficiency and reduce noise signatures of aircrafts—was carried out. This research was focused on reduc... Read More about Design, development and testing of shape shifting wing model.

Theoretical Prediction of Critical Pyrolysate Mass Fluxes of a Material to Mitigate Spacecraft or Planetary Habitat Fire (2017)
Journal Article
Dakka, S. (2017). Theoretical Prediction of Critical Pyrolysate Mass Fluxes of a Material to Mitigate Spacecraft or Planetary Habitat Fire. Journal of the British Interplanetary Society, 70, Article 12-18

Future deep space exploration and plans for planetary settlements prompted researchers to address variety of challenging engineering problems. One problem is developing materials that can mitigate an event of interplanetary spacecraft fire. A numeric... Read More about Theoretical Prediction of Critical Pyrolysate Mass Fluxes of a Material to Mitigate Spacecraft or Planetary Habitat Fire.

An investigation into flow behavior and acoustic mechanisms at the trailing edge of an airfoil (2016)
Journal Article
Dakka, S. M., Jackson, B. R., Jackson, B. R., & Dakka, S. M. (2016). An investigation into flow behavior and acoustic mechanisms at the trailing edge of an airfoil. Noise and Vibration Worldwide, 47(7-8), 99-111. https://doi.org/10.1177/0957456516683004

© 2016, © The Author(s) 2016. The aerodynamic and acoustic testing of a NACA0012 airfoil section was performed in an open wind tunnel, focusing on noise mechanisms at the trailing edge to identify and understand sources of noise production. The sound... Read More about An investigation into flow behavior and acoustic mechanisms at the trailing edge of an airfoil.