Results 81 to 90 of about 67,013 (310)

Sensitivity Analysis of the Key Design Parameters of Turbomachinery in the Closed Helium Cycle System of Pre-cooling Air Turbo Rocket Engine [PDF]

open access: yesEPJ Web of Conferences
The Pre-cooling Air Turbo Rocket Engine (PATR) can meet the power demands of future aerospace vehicles across a wide range of speeds and altitudes. The closed helium cycle is the core of the thermal cycle of the PATR engine, and the design parameters of ...
Zhao Zeyang   +4 more
doaj   +1 more source

Kinetic Compensation of Barrel Launch Under High‐Speed Solid‐Phase Particulate Impacts

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT An accurate launch‐dynamics computational method is critical for barrel weapon service life assessment and multiphase physics field refinement. Given the lack of studies on the solid‐phase buildup behavior at the projectile base, this paper provides an improved method for calculating the launching dynamics under high pressure and high speed ...
Zhiyi He   +3 more
wiley   +1 more source

Modeling and Analysis of a LOX/Ethanol Liquid Rocket Engine

open access: yesJournal of Aerospace Technology and Management, 2018
This work studies the performance and dry mass of the under development LOX/Ethanol L75 liquid rocket engine. To this end, an object-oriented program written in C++ was developed.
Fábio Antônio da Silva Mota   +3 more
doaj  

Nuclear rocket engine

open access: yes, 2021
This article describes a solution to the problem of insufficient capacity of existing rocket engines for interplanetary missions. Development in the sphere was analyzed by comparing the examples of the rockets of 1970 and present time. Further development of the nuclear engine is discussed.
Isakov, A. D.   +2 more
openaire   +1 more source

From Data to Decisions: How Machine Learning and Generative Artificial Intelligence Are Redefining Precision Medicine in Kidney Transplantation

open access: yesOrgan Medicine, EarlyView.
This review evaluates how machine learning, multimodal integration, and generative AI optimize kidney transplant outcomes. These tools enable superior prediction and personalized therapy but face hurdles in data volume, generalizability, and ethics. Future clinical adoption depends on continued innovation and multidisciplinary collaboration to overcome
Maoxin Liao, Cheng Yang
wiley   +1 more source

Research Progress of Decommissioned Solid Rocket Motor Charge Emptying and Recycling Technology [PDF]

open access: yesHangkong bingqi
As the service life of solid rocket engines comes to an end, their operational reliability and performance stability gradually decline. Effectively disposing of large numbers of retired solid rocket engines has become a critical issue.
Zhou Yaping, Lin Zhihui, Wang Maoyu, Dong Jun, Liu Tiansheng, Qiao Haitao
doaj   +1 more source

Apparatus and method for protecting a photographic device Patent [PDF]

open access: yes, 1970
Camera protecting device for use in photographing rocket engine nozzles or other engine ...
Bailey, R. L., Tibbitts, W. C.
core   +1 more source

Unsaturated biobased polyesters from bicyclic α‐pinene‐based diols

open access: yesPolymer International, EarlyView.
We present the synthesis of four biosourced unsaturated polyesters made from chiral terpene‐based diols and esters of renewable diacids. The resulting materials harbor a bicyclic pinene ring in their backbones which leads to enhanced thermal properties while still conferring susceptibility to enzyme hydrolysis for chains having a cis alkene.
Ganapathy Ranjani   +4 more
wiley   +1 more source

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