Results 81 to 90 of about 1,840 (266)

Research on the design and optimization of composite patches for repairing aircraft main load-bearing structures

Materials Research Express
This paper selects the main load-bearing structure of the aircraft landing gear beam as the application object. According to the complex structure characteristics of its irregular curved surface, conformal patches are designed.
Hailong Yang, Jinbiao Xie, Peng Liu, Yungang Sun, Shanyong Xuan   +4 more
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Automated Lawn Maintenance: An Agronomic and Operational Review of Turf Health, Biodiversity, and Field Performance

Journal of Field Robotics, EarlyView.
ABSTRACT Grass mowing is one of the most resource‐consuming activities in green maintenance, whether in private areas such as home gardens or in public spaces like urban parks. In recent years, concerns related to climate change, human health, and sustainability have become increasingly prominent in green maintenance, leading manufacturers and industry
Andrea Palladini, Lorenzo Guerrini, Marco Fontanelli, Lucia Bortolini   +3 more
wiley   +1 more source

Procedure for ensuring the required level of reliability of a propulsion system with a pusher propeller of an aircraft under the influence of foreign objects flying out from under the wheels of the landing gear

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение
A methodology is proposed to estimate the probability of failure-free operation of a propulsion system with a pusher propeller of an aircraft under the influence of foreign objects flying out from under the wheels of the landing gear.
D. S. Markov, E. V. Neskoromny, A. I. Evdokimov   +2 more
doaj   +1 more source

Population Dynamics of Northern Pearl Dace Margariscus nachtriebi in Anthropogenically Altered Headwater Streams of the Nebraska Sandhills Ecoregion

River Research and Applications, EarlyView.
ABSTRACT Empirical evidence of population demographic responses to environmental perturbations is a major knowledge gap for aquatic vertebrate populations. Extensive habitat alteration including channelization of headwater streams influences the habitat template on which small‐bodied fish are dependent to carry out distinct life stages and maintain or ...
Joseph Spooner, Jonathan Spurgeon
wiley   +1 more source

Leakage fault diagnosis method of aircraft landing gear hydraulic cylinder based on wavelet packet

The Journal of Engineering, 2018
The main executive element of the retractable landing gear is the hydraulic cylinder, and its common fault is caused by the leakage of the hydraulic cylinder.
Jie Tang, Qiang Liu, Jianwei Hu, Jinjian Huo, Liwen Wang   +4 more
doaj   +1 more source

Sentipensar [Feel‐Thinking] Cultivates Collective Scientific Sensemaking and Worldbuilding Within and Beyond Ecological Despair

Science Education, EarlyView.
ABSTRACT Educating youth about environmental and climate justice is crucial in realizing a sustainable and flourishing future. Yet this can be challenging given the intense eco‐emotions youth experience and express while learning about these consequential realities and their implications.
Kelsie Fowler
wiley   +1 more source

Strain Monitoring of a Composite Drag Strut in Aircraft Landing Gear by Fiber Bragg Grating Sensors

Sensors, 2019
This work reports on the use of Fiber Bragg Grating (FBG) sensors integrated with innovative composite items of aircraft landing gear for strain/stress monitoring.
Agostino Iadicicco, Daniele Natale, Pasquale Di Palma, Francesco Spinaci, Antonio Apicella, Stefania Campopiano   +5 more
doaj   +1 more source

ESG Debt Issued by Regional Governments in Spain: Financing Sustainable Development or Usual Public Expenditure?

Sustainable Development, EarlyView.
ABSTRACT Sustainable debt bond is an emerging instrument aiming at providing companies and governments with extra resources for financing social and environmental policies and attempting to make progress on the Sustainable Development Goals. Regional governments in Spain have issued sustainable bonds in recent years to finance different spending ...
Alberto Turnes, Xavier Vence, Angeles Pereira   +2 more
wiley   +1 more source

Security Shaping Sustainability: The Difference Between Securitized and Community‐Based Conservation in Benin

Sustainable Development, EarlyView.
ABSTRACT As global conservation efforts intensify, balancing environmental protection with social sustainability has become increasingly urgent. This study employs a comparative case study approach to examine two natural resource management interventions in northern Benin: one led by African Parks in an insecure zone, and another by TMG Research in a ...
Ramoudane Orou Sannou, Christian P. Schneider   +1 more
wiley   +1 more source