Published in Acta astronautica
The Flexible Lunar Architecture for Exploration (FLARE) is a concept to deliver four crew to the lunar surface for a minimum of seven days and then return them safely to Earth. FLARE can be implemented whenever the component vehicles are operational. FLARE was developed as an alternative to NASA's Human Landing System (HLS) reference architecture f...
Published in Acta astronautica
This article will compare the collection of materials for the Saturn V documentation project under NAS8-21321 in 1968 to standard processes for collecting space history today. A case study of The Saturn V grant outlines the benefits of collecting research material in real time. This case study is compared to the findings compiled at the 2018 confer...
Published in Acta Astronautica
• We propose a strategy for satellite-based emerging disease surveillance. • Environmental change can be used to understand zoonotic disease spillover. • Call to action: an open-source platform for emerging disease surveillance.
Published in Acta Astronautica
Highlights•We present a preliminary study on the disposal practices for GNSS.•The dynamics in the MEO region is considered to define stable or fast re-entry orbits.•The possibility of exploiting solar radiation pressure and low-thrust is investigated.•Simulation scenarios are defined according to maintenance and disposal practices.•A novel tool to ...
Published in Acta Astronautica
•Active oxidation in silicon carbide based concretes is studied.•Increasing concentrated solar flux applied on sample increases mass loss.•Silicon carbide based concrete has a mass loss lower than pure silicon carbide.•Linear increasing of surface and in-depth temperature is observed before smokes generation.
Published in Acta Astronautica
We conducted simulated Apollo Extravehicular Activity′ s (EVA) at the 3.45 Ga Australian Pilbara Dawn of life (Western Australia) trail with field and non-field scientists using the University of North Dakota′ s NDX-1 pressurizable space suit to overview the effectiveness of scientist astronauts employing their field observation skills while looki...
Published in Acta Astronautica
•Concepts of photon rocket and proton–antiproton annihilation rocket are revised.•Cross-section of annihilation is accounted for to calculate annihilation length.•Relativistic matter propulsion is substantiated and discussed.•Map-velocity and map-distance are calculated for various values of efflux power.•The problem of heat disposal is accentuated...
Published in Acta Astronautica
•New dynamical equations of rotating triangular tethered formations are developed.•Numerical simulations are performed for both deployment and retrieval stage.•The influence of the parameters is studied for both attitude and orbital motion.•Tether length, rotation and length rate have negligible effect on orbital motion.•Length rate and rotation ra...
Published in Acta Astronautica
Highlights•A statistical analysis of small satellite reliability using in-orbit failure data.•Bayesian/Markov Chain Monte Carlo is proposed for satellite reliability modelling.•Results show the infant mortality of small satellites, especially with TTC.•Bayesian/MCMC results in better fitting Weibull models than the classical MLE method.•Bayesian/MC...
Published in Acta Astronautica
•Cluster model of the (111) β-cristobalite face reveals superiority of M06 and B3LYP functional.•Adsorption of O atom on (111) face is weaker than that on (100) face; reverse trend holds for N atom.•Adsorption energies of O and N atoms on (111) are 5.2 and 3.4eV, respectively.
