Results 191 to 200 of about 30,929 (280)

Oral administration microrobots for drug delivery. [PDF]

Bioact Mater
Ren A, Hu J, Qin C, Xia N, Yu M, Xu X, Yang H, Han M, Zhang L, Ma L.   +9 more
europepmc   +1 more source

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Energetic Additives for Hybrid Rocket Propulsion - Review

2020 Advances in Science and Engineering Technology International Conferences (ASET), 2020
Hybrid propulsion offers safe, reliable and environment friendly alternative to conventional systems. There is a wide range of propellants and additives reported for hybrid propulsion.
Md. Zishan Akhter, M. Hassan
semanticscholar   +2 more sources

Advances in ASRI’s Liquid and Hybrid Rocket Propulsion Programs

AIAA SCITECH 2024 Forum
Michael J. Brooks, Jean Pitot, Glen Snedden, Timothy Velthuysen, B. Genevieve, Tyrone Swanepoel, Yashik Singh   +6 more
semanticscholar   +3 more sources

Nammo hybrid rocket propulsion TRL improvement program

48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2012
In 2010, Nammo initiated an ESA-funded hybrid propulsion Technology Readiness Level (TRL) improvement program based on ideas proposed in a study performed for Ariane 5 ME a year before. In a program lasting less than one year, Nammo executed 29 hybrid rocket firing tests using hydrogen peroxide as the oxidizer.
Jan Erik Ronningen, Johanne Husdal, Morten Berger, Roy Vesterås, Geir Raudsandmoen   +4 more
openaire   +2 more sources

On use of hybrid rocket propulsion for suborbital vehicles

Acta Astronautica, 2018
Abstract While the majority of operating suborbital rockets use solid rocket propulsion, recent advancements in the field of hybrid rocket motors lead to renewed interest in their use in sounding rockets. This paper presents results of optimisation of sounding rockets using hybrid propulsion.
A. Okniński
semanticscholar   +2 more sources

Low cost small-satellite access to space using hybrid rocket propulsion

Acta Astronautica, 2019
Abstract Increased demand for smallsat launch capabilities drives on the search for low-cost launch vehicles. Hybrid rocket technology has been pushed forward in the recent years and is now ready to meet the demand of this low-cost rocket development.
C. Schmierer, M. Kobald, K. Tomilin, U. Fischer, S. Schlechtriem   +4 more
semanticscholar   +3 more sources

Paraffin-based Fuels and Energetic Additives for Hybrid Rocket Propulsion

51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015
Energetic additives for hybrid rocket propulsion, investigated at the Space Propulsion Laboratory (SPLab) of Politecnico di Milano, are discussed in this paper in order to estimate the potential increase of hybrid rocket performance. Traditional HTPB-based and paraffin-based fuels are considered, with special emphasis to the second ones.
M. Boiocchi, F. Maggi, C. Paravan, L. Galfetti   +3 more
semanticscholar   +3 more sources

Hybrid rocket propulsion systems for outer planet exploration missions

Acta Astronautica, 2016
Abstract Outer planet exploration missions require significant propulsive capability, particularly to achieve orbit insertion. Missions to explore the moons of outer planets place even more demanding requirements on propulsion systems, since they involve multiple large Δ V maneuvers.
E. Jens, B. Cantwell, G. Hubbard
semanticscholar   +2 more sources

Hybrid Particle Swarm: Pattern Search Optimizer for Rocket Propulsion Applications

Journal of Spacecraft and Rockets, 2012
The ability of Particle Swarm Optimization (PSO) to locate global optimum solutions is combined with the usefulness of Pattern Search Optimization (PS) in finding local optimum values to produce a powerful tool for analyzing aerospace propulsion systems.
Rhonald M. Jenkins, Roy J. Hartfield
openaire   +2 more sources

Exploring the potential of boron carbide in enhancing energy output of solid fuels for SFRJ and hybrid rocket propulsion systems

Propellants, explosives, pyrotechnics, 2023
Boron carbide (B4C) is known for its exceptional hardness and high energy release during combustion, despite its ignition processes presents considerable challenges.
Sri Nithya Mahottamananda, Y. Pal, Syed Alay Hashim, M. Dinesh, D. Trache   +4 more
semanticscholar   +1 more source