Results 71 to 80 of about 301,038 (298)
AerospaceDespite considerable research effort in the past 60 years, the occurrence of combustion instabilities in rocket engines is still not fully understood.
Tim Horchler +2 more
doaj +1 more source
Global Policy, EarlyView.ABSTRACT On‐orbit rendezvous and docking constitute one of the most technically challenging activities in the history of space activities. As space endeavours mature to crewed missions, space rendezous and docking technologies (RDT) emerge as an area of technological innovation critical to advances in future crewed space exploration.
Nikita Chiu, Markus Kornprobst
wiley +1 more source
Optimization of the E×B method for studying the charge composition of ions in the plasma jet of Hall effect thrusters [PDF]
Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"Electric propulsion rocket engines are widely used on board modern spacecraft. To ensure the efficient use of such engines, it is important to diagnose the plasma plume of the engine.
D. A. Maystrenko +3 more
doaj +1 more source
An earth pole-sitter using hybrid propulsion [PDF]
, 2010 In this paper we investigate optimal pole-sitter orbits using hybrid solar sail and solar electric propulsion (SEP). A pole-sitter is a spacecraft that is constantly above one of the Earth's poles, by means of a continuous thrust.
Becerra V. M. +8 more
core +2 more sources
Perspectives, frontiers, and new horizons for plasma-based space electric propulsion
Physics of Plasmas, 2020 There are a number of pressing problems mankind is facing today that could, at least in part, be resolved by space systems. These include capabilities for fast and far-reaching telecommunication, surveying of resources and climate, and sustaining global ...
I. Levchenko +8 more
semanticscholar +1 more source
Recent progress and perspectives of space electric propulsion systems based on smart nanomaterials
Nature Communications, 2018 Miniaturized spacecraft built from advanced nanomaterials are poised for unmanned space exploration. In this review, the authors examine the integration of nanotechnology in electric propulsion systems and propose the concept of self-healing and adaptive
I. Levchenko +5 more
doaj +1 more source
Variable Side-Look Angle Concept For Radar Mapping [PDF]
, 1974 Radar mapping of planets can be accomplished at lower cost and with reduced emphasis on propulsion system capability from spacecraft operating in elliptical orbit than from circular ...
Vandenberg, Frank A.
core +1 more source
Sampling the volcanic plumes at Io: Impact speeds and shock conditions
Meteoritics &Planetary Science, EarlyView.Abstract The desire to sample material from the interior of Io, by flying through its volcanic plumes, requires consideration of the flyby speed and the types of sample collection techniques that can be utilized. Low speed collection (1–2.5 km s−1) would require an orbit around Io itself, which is unlikely due to the accumulated radiation dose that ...
M. J. Burchell +2 more
wiley +1 more source
Journal of Engineering Research and ReviewsThe ever-growing desire to explore the cosmos compels us to seek more efficient and sustainable methods for space travel. Conventional rocket propulsion, reliant on the expulsion of propellant, presents limitations in terms of cost and environmental ...
Mostafa Essam Eissa
doaj +1 more source
Experimental Physiology, EarlyView.Abstract Manned space exploration to distant destinations, including Mars, continues to be an aspiration of humankind. Space travel does, however, present many challenges to the body, amongst which adaptation to microgravity is perhaps the largest. For instance, both short and long manned spaceflight missions have shown substantial deleterious effects ...
Gerard McMahon +2 more
wiley +1 more source