Results 61 to 70 of about 772,477 (210)

A thrust equation treats propellers and rotors as aerodynamic cycles and calculates their thrust without resorting to the blade element method

International Journal of Aviation, Aeronautics, and Aerospace, 2019
The lift generated by a translating wing of known translational speed, lift coefficient and area is calculated by a simple equation. A propeller or rotor generating thrust share the same aerodynamic principles but their different kinematics cause the ...
Phillip - Burgers
doaj   +1 more source

High‐Performance All‐Solid‐State Silicon–Sulfur Batteries Enabled by Li4(BH4)3I Hydride Electrolyte

Small, EarlyView.
A prelithiated silicon anode coupled with a Li4(BH4)3I hydride electrolyte enables stable all‐solid‐state silicon–sulfur batteries with high electrochemical reversibility and suppressed interfacial degradation. The full cell delivers an ultra‐high areal capacity of 23.88 mAh cm−2 and stable cycling over 1000 cycles, while stress‐compensated battery ...
Tao Huang, Zhaotong Hu, Yifei Shao, Xiang Zhang, Caiting Yuan, Zhanning Wu, Takayuki Ichikawa, Fangqin Guo, Tengfei Zhang   +8 more
wiley   +1 more source

Non‐Invasive Smart Pressure Sensor for Early‐Stage Thermal Runaway Warning for Cylindrical Batteries

Small, EarlyView.
A smart pressure sensor based on shape memory sensing composite is introduced, which enables conformal contact with cylindrical batteries and can continuously monitor the lateral pressure caused by volume expansion during charging‐discharging. This smart sensor features impressive stability, recoverability and a broad pressure detection range.
Yi Liu, Ang Wang, Yingying Xu, Yaobo Wu, Shaohua Yang, Youyun Zou, Xinyu Wang, Yuqi Huang, Zongrong Wang, Shaoxing Qu   +9 more
wiley   +1 more source

Alignment of Agile and Modular Open Systems Approach (MOSA) Principles in Systems Engineering

Systems Engineering, EarlyView.
ABSTRACT Organizations have consistently sought faster and more efficient methods for producing and delivering products. Agile principles offer essential guidance for shaping their policies and practices. The Agile Manifesto (AM) outlines 12 core principles for guiding software development but can also be applied in other contexts.
Terry Plonsky, Daniel R. Herber
wiley   +1 more source

A Novel Approach for Missing Combat Support Aircraft Search Acceleration using VTOL UAS

International Journal of Aviation, Aeronautics, and Aerospace, 2018
In this paper, an approach to accelerate search operations for a missing combat support aircraft using a portable waterproof autonomous vertical takeoff and landing unmanned aerial system called “flying locator beacon” is described.
Mohammed Ba Zuhair, Wisam Yousef, Issam Samara, Vladislav Varsegov   +3 more
doaj   +1 more source

Investigating SME‐Inclusive Public‐Private AI Innovation Network: Evidence From U.S. Small Business Administration (1991–2023)

Thunderbird International Business Review, EarlyView.
ABSTRACT Understanding innovation policy is pivotal to enhancing national competitiveness for global value chain. This research investigates an SME‐Inclusive public‐private AI innovation network over time in the U.S. context (1991–2023), revealing how a government's demand‐based innovation policy bolsters technological prowess through isomorphism and ...
Jiyoon An
wiley   +1 more source

Optical-SDMA for Broadband Aeronautical Communications" [PDF]

, 2003
Broadband communication for aircraft passengers is facing one of the most promising markets of near future. While currently systems introduced in L and Ku band are already limited in bandwidth considering service provisioning to several airline fleets ...
Giggenbach, Dirk, Holzbock, Matthias, Werner, Markus, Lücke, Oliver   +3 more
core  

Mechanical analysis of a carbon fibre composite woven composite laminate for ultra-light applications in aeronautics

Composites Part C: Open Access
Carbon fiber composites have emerged as a transformative technology, offering a fascinating alternative to traditional materials like aluminum and steel. Their unique combination of high strength, stiffness, and reduced density makes them an ideal choice
Nicholas Fantuzzi, Antoine Dib, Sajjad Babamohammadi, Silvio Campigli, David Benedetti, Jacopo Agnelli   +5 more
doaj   +1 more source

Implementation of the Global Aeronautical Distress and Safety System (GADSS)

Aviation, 2018
In this paper is introduced the first proposal for development of Global Aeronautical Distress and Safety System (GADSS) in 1999 by the author of this article. The GADSS is de facto the integration of space (radio and satellite) Communication, Navigation
Dimov Stojce Ilcev
doaj   +1 more source

Biocrust restoration in novel climates: assisted migration, habitat amelioration, and varied community composition as climate‐smart techniques

Restoration Ecology, EarlyView.
Abstract Introduction Successful restoration of terrestrial drylands depends on stable, fertile soils that retain water. These functions are provided by biological soil crusts (biocrust), suggesting their reestablishment is a critical step in dryland restoration.
Colin Tucker, Anita Antoninka, Matthew A. Bowker, Sasha C. Reed   +3 more
wiley   +1 more source