Results 61 to 70 of about 174,771 (214)

Robust Adaptive Integral Backstepping Control of a 3-DOF Helicopter

International Journal of Advanced Robotic Systems, 2012
Unmanned aerial vehicles have enormous potential applications in military and civil fields. A Quanser's 3-DOF helicopter is a simplified and benchmark experimental model for validating the effectiveness of various flight control algorithms.
Zheng Fang, Weinan Gao, Lei Zhang
doaj   +1 more source

SOLUTION OF TASK OPTIMAL PLANNING OF AIR DEFENSE MEANS AGAINST LOW-ALTITUDE AIR TARGETS [PDF]

Journal of Defense Resources Management
The article examines the methods of their destruction by air defense systems, taking into account the low-altitude operation of various types of air attack weapons fighter airplane, helicopter, cruise missile, reconnaissance unmanned aerial vehicles and ...
Arzuman G. GASANOV
doaj   +1 more source

Brief Communication: Low-cost, on-demand aerial photogrammetry for glaciological measurement [PDF]

The Cryosphere, 2013
Remotely sensed glaciological measurements can be expensive, often involving a trade-off between resolution, scale, and frequency. We report on a case study in which two low-cost techniques were used to generate digital elevation models and orthomosaics ...
K. Whitehead, B. J. Moorman, C. H. Hugenholtz   +2 more
doaj   +1 more source

The Influence of Territory Quality on Behavioral Activity, Mass Loss, and Tenure in Breeding Male Australian Fur Seals

Marine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT Territory quality is a key determinant of male reproductive success and an important driver of population dynamics in pinnipeds. In Australian fur seals (Arctocephalus pusillus doriferus; AUFS), males rely on pre‐breeding energy reserves to acquire and maintain territories, linking competitive ability to body size and condition.
Johanna J. Geeson, John P. Y. Arnould
wiley   +1 more source

Unmanned Helicopter Type Aircraft for the Pesticides and Fertilizers Application

Сельскохозяйственные машины и технологии, 2020
Digital agricultural production is based on robotic agricultural technologies for the use of pesticides and fertilizers using unmanned aerial systems, which are based on unmanned aerial vehicles for monitoring agricultural land, the pesticides ...
L. A. Marchenko, M. V. Myzin, I. V. Kuznetsov, T. V. Mochkova, A. Yu. Spiridonov   +4 more
doaj   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, Volume 13, Issue 36, 29 June 2026.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Laser bathymetry on rough riverbed channels: State‐of‐the‐art and future prospects

Earth Surface Processes and Landforms, Volume 51, Issue 6, June 2026.
This literature review found that topo‐bathymetric LiDAR has been successfully used to capture the structures of rough riverbeds and detect large boulders. While all of the studies that were reviewed used sensors that were operated from fixed‐wing aircraft, few studies have yet tested UAV‐borne sensors on rough riverbeds, despite the potential offered ...
Theresa M. Himmelsbach, Gottfried Mandlburger, Bernhard Gems, Jan Rhomberg‐Kauert, Markus Aufleger   +4 more
wiley   +1 more source

Bench Performance Test Research of Gear Oil of 80W-140 Type Unmanned Helicopter Main Gearbox

Jixie chuandong, 2022
In order to realize the localization of unmanned helicopter gear oil，the influence of different performance gear oil on gearbox performance is clarified，so as to improve the reliability and service life of gearbox scientifically.
Hongtao Huang, Wenbo Xu, Shijun Liu, Zhaojun Zhang, Xiaojun Zhang, Jiusheng Li   +5 more
doaj  

Elevated Skid Design for an Unmanned Disaster Relief Helicopter

NUST Journal of Engineering Sciences, 2016
Development of unmanned disaster relief helicopters is need of developing countries like Pakistan to save the lives of disaster victims. As a part of research on the development of unmanned disaster relief helicopter at National University of Sciences ...
Umair Iqbal, Muhammad Salman Sadiq, Aiman Rashid, Syed Irtiza Ali Shah   +3 more
doaj   +1 more source

Complexity and the Global Security Governance of Autonomous Weapon Systems: Regulatory Deadlock and Practices of Relational Transcendence

World Affairs, Volume 189, Issue 3, Fall 2026.
ABSTRACT One of the most prominent contemporary issues in the arms control domain is the regulation of Autonomous Weapon Systems (AWS). Today, there exist global governance procedures for AWS due to intense legal and ethical concerns, especially about those equipped with Artificial Intelligence capabilities, herein referred to as intelligent AWS (IAWS).
Dimitris Tsintsaris
wiley   +1 more source