Results 81 to 90 of about 107,600 (223)

An earth pole-sitter using hybrid propulsion [PDF]

, 2010
In this paper we investigate optimal pole-sitter orbits using hybrid solar sail and solar electric propulsion (SEP). A pole-sitter is a spacecraft that is constantly above one of the Earth's poles, by means of a continuous thrust.
Becerra V. M., Betts J. T., Driver J. M., Fahroo F., Fornberg B., Mengali G., Powell M. J. D., Quarta A. A., Wertz J. R.   +8 more
core   +2 more sources

In situ alloying strategy constructed Fe3Co–N–C electrocatalysts with designed 1D/3D hierarchical networks for rechargeable zinc–air battery

InfoMat, EarlyView.
1D/3D dual carbon‐supported Fe3Co nitrogen carbides driven rechargeable zinc–air battery. Abstract Rechargeable zinc–air batteries (RZABs), emerged as a prospective energy conversion device, have garnered substantial attention from researchers over the past decades.
Yue Du, Wenxue Chen, Zhixian Shi, Lina Zhou, Song Pan, Xiaonan Xu, Yifeng Liu, Luqi Wang, Dongbin Xiong, Yisi Liu, Xiaodong Guo, Shixue Dou, Yao Xiao   +12 more
wiley   +1 more source

Fluid Dynamics and Infrared Stealth of Marine IRS Devices: A Review

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Infrared suppression (IRS) devices for naval ships play a crucial role in reducing the infrared radiation signature of high‐temperature exhaust, thereby enhancing the survivability of ships against infrared‐guided weapons. This paper provides a comprehensive review of recent advancements in the design and optimization of IRS devices.
Yitao Zou, Zhenrong Liu, Xin Qiao, Yingying Jiang, Hong Shi, Yanlong Jiang   +5 more
wiley   +1 more source

Aircraft systems architecting: a functional-logical domain perspective [PDF]

, 2016
Presented is a novel framework for early systems architecture design. The framework defines data structures and algorithms that enable the systems architect to operate interactively and simultaneously in both the functional and logical domains.
Cuiller, C., Giese, Tim, Guenov, Marin D., Molina-Cristobal, Arturo, Riaz, Atif, Sharma, Sanjiv, van Heerden, Albert S. J., Voloshin, V.   +7 more
core   +1 more source

Uncertainty Quantification for Nonlinear Vibration of Supercritical Drive Shaft With a Dry Friction Damper

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The supercritical drive shaft is becoming increasingly popular in helicopter transmission system. Dry friction dampers are specially employed to ensure the supercritical shafts crossing the critical speed safely. Due to design tolerances, manufacturing errors and time‐varying factors, the parameters of the damper are inherently uncertain ...
Liyao Song, Meijun Liao, Weifang Chen, Rupeng Zhu, Dan Wang   +4 more
wiley   +1 more source

Welded microstructure and orientation variation of duplex Ti alloy through electrodynamic vibration

Journal of Materials Research and Technology, 2022
Duplex Ti alloys are widely used in the petrochemical industry as well as in the biomedical, aeronautics and astronautics engineering fields. A duplex Ti alloy weldment is uniform and has superior properties in terms of welded microstructure evolution ...
Chia-Heng Liu, Chen-Kuan Kuo, Shing-Hoa Wang, Yo-Lun Yang, Horng-Yi Chang, Po-Kai Chiu   +5 more
doaj  

Exploring the Versatility of Aerogels: Broad Applications in Biomedical Engineering, Astronautics, Energy Storage, Biosensing, and Current Progress

Heliyon, 2023
Nazia Rodoshi Khan, Tasnuva Sharmin, Adib Bin Rashid   +2 more
semanticscholar   +1 more source

Mission Abort Policy Considering Imperfect Alarms and Two Abort Options

Naval Research Logistics (NRL), EarlyView.
ABSTRACT A mission may be aborted during operation to increase the likelihood of system survival when an alarm system indicates that the system has entered a defect state. However, due to measurement and environmental noise, missed and false alarms frequently occur during online condition monitoring, complicating the decision‐making process for mission
Jiawen Hu, Piao Chen
wiley   +1 more source

Publications of the Jet Propulsion Laboratory July 1965 through July 1966 [PDF]

Bibliography on Jet Propulsion Laboratory technical reports and memorandums, space programs summary, astronautics information, and literature ...
Woods, R. L.
core   +1 more source

Single screw extrusion of long discontinuous fiber‐reinforced polymers: Pellet motion and heat transfer

Polymer Composites, EarlyView.
Sequential coupling of motion and heat‐transfer of long‐discontinuous fiber reinforced pellets in a single screw extruder. Abstract Single screw extrusion is widely used in material pre‐compounding, extrusion additive manufacturing, and injection molding.
Vasudha Kapre, Eduardo Barocio, R. Byron Pipes   +2 more
wiley   +1 more source