Results 71 to 80 of about 1,431,155 (187)

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

open access: yesJournal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang   +3 more
wiley   +1 more source

Analysis of the characteristics of the ejector mode of the pulse detonation propulsion system of the combined acceleration cycle

open access: yesАвіаційно-космічна техніка та технологія
The subjects of this article are processes in the chamber of the pulse detonation propulsion system of the combined acceleration cycle (PSCA). The goal is to identify the most significant factors and study their influence on the defining characteristics ...
Olena Zolotko   +4 more
doaj   +1 more source

Hydrogen Storage Technologies: Materials Innovation and System‐Level Challenges for a Carbon‐Neutral Future

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 9, September 2026.
Engineered activated carbon materials with tailored pore structures and surface chemistry deliver high‐performance dual functionality across supercapacitors and hydrogen storage, establishing clear structure–property–performance relationships that advance scalable carbon‐based solutions for next‐generation energy storage and conversion.
Rayhan Hasan Pranto   +4 more
wiley   +1 more source

Experimental Study of Polyurethane-Based Fuels with Addition of Paraffin and Aluminum for Hybrid Rocket Motors

open access: yesJournal of Aerospace Technology and Management, 2013
http://dx.doi.org/10.5028/jatm.v5i3.228 Experimental investigation was conducted to determine the relative propulsive and combustion behavior of several polyurethane-based solid-fuel formulations containing 30% w/w of paraffin or 10% of aluminum powder.
Susane Ribeiro Gomes   +3 more
doaj  

A systematic review on computational modelling and reacting flow simulations of a hybrid rocket engine

open access: yesAdvances in Aerodynamics
Reacting flow simulations represent a formidable challenge in numerical analysis because they incorporate complex mechanisms from various reacting flows alongside high-velocity fluid dynamics.
Arvind Pallela   +4 more
doaj   +1 more source

Investigation of Performance Stability of a Nytrox Hybrid Rocket Propulsion System

open access: yesAerospace
Nitrous oxide is a highly suitable oxidizer for hybrid rockets due to its self-pressurizing properties, moderate cost, and high accessibility. However, its vapor pressure and density are highly dependent on ambient temperature, requiring careful ...
Shih-Sin Wei   +3 more
doaj   +1 more source

Tailoring Laser Propulsion for Future Applications in Space [PDF]

open access: yes, 2010
Pulsed laser propulsion may turn out as a low cost alternative for the transportation of small payloads in future. In recent years DLR investigated this technology with the goal of cheaply launching small satellites into low earth orbit (LEO) with ...
Eckel, Hans-Albert, Scharring, Stefan
core   +1 more source

Sensitivity Study Regarding ABS Formulation on Hybrid Rocket Performance

open access: yesApplied Sciences
Acrylonitrile butadiene styrene (ABS) has emerged as a widely adopted solid fuel for hybrid rocket propulsion due to its compatibility with fused deposition modeling and favorable regression characteristics.
Ava T. Wilkey   +2 more
doaj   +1 more source

Static highly elliptical orbits using hybrid low-thrust propulsion [PDF]

open access: yes, 2012
The use of extended static-highly elliptical orbits, termed Taranis orbits, is considered for continuous observation of high latitude regions. Low-thrust propulsion is used to alter the critical inclination of Molniya-like orbits to any inclination ...
Macdonald, Malcolm, Anderson, Pamela
core   +2 more sources

HYBRID ROCKET ENGINE TEST FACILITY DESIGN

open access: yesHavacılık ve Uzay Teknolojileri Dergisi, 2016
Hybrid rocket engines is relatively less researched subject of chemical rockets. Using fuel and oxidizer in different phases hybrids are safe and cheap. Yet, they are not generating enogh thrust to deliver heavy payloads to edge of space.
Ali Emre Samur   +2 more
doaj  

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