Results 61 to 70 of about 32,293 (191)

Generation of Virtual Ground Control Points Using a Binocular Camera

Drones
This paper presents a methodology for generating virtual ground control points (VGCPs) using a binocular camera mounted on a drone. We compare the measurements of the binocular and monocular cameras between the classical method and the proposed one. This
Ariel Vazquez-Dominguez, Andrea Magadán-Salazar, Raúl Pinto-Elías, Jorge Fuentes-Pacheco, Máximo López-Sánchez, Hernán Abaunza-González   +5 more
doaj   +1 more source

Effect of Injection Scheme on Mixing Characteristic of Methane-Oxygen Rotating Detonation Engine [PDF]

Hangkong bingqi
Rotating detonation engine is known as a new concept engine which has the property of self-pressurization and continuous thrust supply. It has already shown ambitious potential for applications in the aviation and aerospace field.
Liu Xiangyu, Zhao Nannan, Zhu Long, Huang Yakun, Wang Yuanding, Zheng Quan, Weng Chunsheng
doaj   +1 more source

RoboBat: Dynamics and Control of a Robotic Bat Flapping Flying Testbed [PDF]

, 2011
This paper investigates the control of the phase difference in between three different motions of bat flight: pitching, mapping, and lead-lag. For active control, a robotic bat test bed capable of simulating different wing motions is used to test the ...
Chung, Soon-Jo, Dorothy, Michael, Fong, Daniel   +2 more
core   +1 more source

A Review of Real-Time Implementable Cooperative Aerial Manipulation Systems

Drones
This review paper focuses on quadrotor- and multirotor-based cooperative aerial manipulation. Emphasis is first given to comparing and evaluating prototype systems that have been implemented and tested in real-time in diverse application environments ...
Stamatina C. Barakou, Costas S. Tzafestas, Kimon P. Valavanis   +2 more
doaj   +1 more source

NASA to launch third NATO communications satellite [PDF]

Launching of the third NATO communications satellite is discussed. The Delta launch vehicle is briefly described along with launch operations.

core   +1 more source

Robust Radar Inertial Odometry in Dynamic 3D Environments

Drones
Millimeter-Wave Radar is one promising sensor to achieve robust perception against challenging observing conditions. In this paper, we propose a Radar Inertial Odometry (RIO) pipeline utilizing a long-range 4D millimeter-wave radar for autonomous vehicle
Yang Lyu, Lin Hua, Jiaming Wu, Xinkai Liang, Chunhui Zhao   +4 more
doaj   +1 more source

Fe(3): An Evaluation Tool for Low-Altitude Air Traffic Operations [PDF]

, 2018
The concepts of unmanned aircraft system traffic management (UTM) and urban air mobility (UAM) are introducing high-density operations in low altitude airspace in closer proximity to populated areas than conventional high-altitude air traffic.
Ishihara, Abraham, Rios, Joseph, Silva, Joseph, Xue, Min, Zhu, Zhifan   +4 more
core   +2 more sources

UAV-Mounted RIS-Aided Mobile Edge Computing System: A DDQN-Based Optimization Approach

Drones
Unmanned aerial vehicles (UAVs) and reconfigurable intelligent surfaces (RISs) are increasingly employed in mobile edge computing (MEC) systems to flexibly modify the signal transmission environment.
Min Wu, Shibing Zhu, Changqing Li, Jiao Zhu, Yudi Chen, Xiangyu Liu, Rui Liu   +6 more
doaj   +1 more source

Aeronautical Engineering: A special bibliography with indexes, supplement 54 [PDF]

This bibliography lists 316 reports, articles, and other documents introduced into the NASA scientific and technical information system in January ...

core   +1 more source

NASA Puffin Electric Tailsitter VTOL Concept [PDF]

, 2010
Electric propulsion offers dramatic new vehicle mission capabilities, not possible with turbine or reciprocating engines; including high reliability and efficiency, low engine weight and maintenance, low cooling drag and volume required, very low noise ...
Moore, Mark D.
core   +1 more source