Results 51 to 60 of about 20,787 (234)

Development of NMP‐001, A Nitromethane‐Based Green Propellant

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT This paper discusses the development of a model monopropellant that is aimed at exploring the applicability of nitromethane‐based propellants as an alternative to hydrazine. This approach addresses the challenges faced by HAN‐, ADN‐based propulsion by being more cost‐effective while providing similar performance figures.
Maxim Kurilov, Joshua Haase, Christoph U. Kirchberger, Stefan Schlechtirem   +3 more
wiley   +1 more source

Research on a Multiple Mediation Effect Model for Rocket Engine Quality Assessment Based on the SGL Penalty Function [PDF]

Hangkong bingqi
To tackle the challenges posed by intricate associations among multidimensional indicators， ambiguous transmission pathways， and the identification of pivotal elements in assessing liquid rocket engine quality， a structural equation model is developed ...
Wang Yuhui, Xu Sining, Cheng Xiangjun, Yang Qianjun
doaj   +1 more source

The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review

Journal of Field Robotics, EarlyView.
ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton, Daniel Mitchell, Jamie Blanche, Euan McGookin, David Flynn   +4 more
wiley   +1 more source

Europium‐ and dysprosium‐modified strontium aluminate: A luminescent marker system for enhanced gunshot residue detection

Journal of Forensic Sciences, EarlyView.
Abstract Forensic ballistics is essential in analyzing evidence from firearm use in criminal investigations, with gunshot residue (GSR) detection providing key information about the firearm and shooting conditions. Traditional methods like spectroscopy and scanning electron microscopy (SEM) have limitations in sensitivity, cost, and accessibility ...
Paulo Tonin, Cesar Aguzzoli, Sidnei Moura   +2 more
wiley   +1 more source

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

Hangkong 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

Impact of Environmental Exposure on Infant Sleep : The Exposome Approach

Journal of Sleep Research, EarlyView.
This review explores how exposure to environmental pollutants during the first 1000 days of life may affect infant sleep. Evidence suggests potential links between chemical exposures and sleep disturbances, underscoring the need for more research on early‐life vulnerability and the impact of pollutants in air, diet, and breast milk.
Zeina Halbouty, Debora Tuka, Erwan Stephan‐Blanchard, Veronique Bach, Pierre Tourneux, Elodie Haraux, Karen Chardon   +6 more
wiley   +1 more source

Launch vehicle performance using metallized propellants [PDF]

Metallized propellant propulsion systems are considered as replacements for the solid rocket boosters and liquid sustainer stages on the current launch vehicles: both the Space Transportation System (STS) and the Titan 4.
Palaszewski, Bryan A., Powell, Richard
core   +1 more source

Space, the new frontier [PDF]

, 1964
Space program - high thrust boosters with greater payload capabilities, superior guidance and control, and astronaut ...
Dean, J., Gardner, G., Luchton, B., Seigel, V., Umsted, E.   +4 more
core   +1 more source

Chronic Low‐Dose Unsymmetrical Dimethylhydrazine Exposure in Rats: Multiorgan Mechanisms and Biomarker Identification

Journal of Applied Toxicology, Volume 46, Issue 6, Page 1987-2002, June 2026.
ABSTRACT Unsymmetrical dimethylhydrazine (UDMH), a highly toxic rocket propellant with known multiorgan effects, requires urgent characterization of its chronic low‐dose toxicity. Using an integrated approach including exploratory transcriptomics (n = 3/group) and metabolomic (n = 4/group) approaches in male Sprague–Dawley rats exposed to high‐dose ...
Fuzhou Liu, Bing Liu, Keli Wang, Xiaoyu Wang, Zhen Sun, Xiaojuan Pan, Zengming Zhao   +6 more
wiley   +1 more source

Research and development needs in combustion modeling

Applications in Energy and Combustion Science
This article provides a perspective on future research and development needs of aerospace propulsion from the vantage point of the Air Force Research Lab (AFRL).
Venkateswaran Sankaran
doaj   +1 more source