Results 61 to 70 of about 2,283 (262)

A Model for Igniter Mass Flow Rate History Evaluation for Solid Rocket Motors

open access: yesInternational Journal of Aerospace Engineering, 2019
This paper describes a zero-dimensional model for evaluating the mass flow rate history of a solid rocket motor igniter. Based on the results of an igniter-firing experiment, in which the igniter is the only source of combustion gas and no propellant is ...
Yanjie Ma   +4 more
doaj   +1 more source

Aero‐breakup of droplets: Recent progress and outlook

open access: yesDroplet, EarlyView.
This work systematically reviews the recent progress of droplet aero‐breakup studies. The discussion covers the research history, theoretical framework, new breakup mode discoveries, influence of droplet fluid properties, scenarios of multi‐droplet and droplet cloud, and finally, an outlook for future explorations is presented. Abstract Aero‐breakup of
Ben Guan   +4 more
wiley   +1 more source

Solving an irregular burning problem in a small rocket motor [PDF]

open access: yesScientific Technical Review, 2014
During the design and development of a solid rocket motor, intensive irregular burning appeared in the area of high initial temperatures. The cylindrical propellant grain was designed for approximately neutral burning, with a hollow tube and both burning
Gligorijević Nikola   +5 more
doaj  

Architecting nano‐Al/HMX/CuO energetic micro‐units unlocks superior interface and highly efficient combustion

open access: yesInfoMat, EarlyView.
Improving the dispersion of nano‐aluminum is of great importance in explosives and propellants. The spherical Al/HMX/CuO energetic micro‐units were prepared using microchannel technology, which significantly improved the uniformity and dispersion of nano‐Al. It also enhanced the mass and heat transfer efficiency between the fuel and oxidizer components,
Gazi Hao   +12 more
wiley   +1 more source

Air to ground rocket dispersion minimization [PDF]

open access: yesScientific Technical Review, 2018
Dispersion of the impact points of the unguided rockets is a consequence of disturbances, such as thrust misalignments, rocket asymmetry, manufactoring inacuracy, etc.
Mandić Slobodan   +3 more
doaj  

Programmable solar‐blind ultraviolet sensors enabling integrated single‐pixel sensing and neuromorphic processing

open access: yesInfoMat, EarlyView.
A Schottky photodiode based on (Al0.14Ga0.86)2O3 was developed, in which the sensing and processing functions were temporally decoupled through bias voltage modulation. By integrating single‐pixel imaging with a reservoir computing architecture, a comprehensive intelligent vision system was constructed.
Hongbin Wang   +10 more
wiley   +1 more source

Concordance Between MR Safety Guidance Documents on Conditions for a Safe MR Environment

open access: yesJournal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Environmental conditions established at facility design, construction, updates, and/or procurement of specialized equipment are the foundation of safe MR practice. Establishing an institutional MR safety program must take into consideration the conditions of the MR environment, and staff training should be tailored to its features ...
Ives R. Levesque   +3 more
wiley   +1 more source

Evaluation of Mono and Bimetallic Ferrocene-Based 1,2,3-Triazolyl Compounds as Burning Rate Catalysts for Solid Rocket Motor. [PDF]

open access: yesACS Omega, 2023
Valdebenito C   +9 more
europepmc   +1 more source

Setting the Record Straight: The Intellectual Legacy of H. Igor Ansoff (1918–2002)

open access: yesStrategic Change, EarlyView.
ABSTRACT This study presents a comprehensive annotated bibliography of H. Igor Ansoff's intellectual contributions, addressing significant gaps in existing citation databases such as Scopus and Web of Science, which capture only 9 to 15 percent of his work.
Richard W. Puyt
wiley   +1 more source

Cervical Inlet Patches in R‐CPD: An Unrecognized Predictor of Treatment Failure

open access: yesThe Laryngoscope, EarlyView.
This retrospective cohort study identified cervical inlet patches (CIP) in 19.8% of patients undergoing cricopharyngeal botulinum toxin injection for R‐CPD. CIP presence and increasing age independently predicted failure to sustain a long‐term treatment response, suggesting that CIP may be an underrecognized factor in R‐CPD treatment durability ...
Andrew Geoffrey Tritter   +2 more
wiley   +1 more source

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