Results 71 to 80 of about 187,061 (298)

Modeling of the Flight Performance of a Plasma-Propelled Drone: Limitations and Prospects

Drones
The resurgence in interest in aircraft electro-aerodynamic (EAD) propulsion has been sparked due to recent advancements in EAD thrusters, which generate thrust by employing a plasma generated through electrical discharge.
Sylvain Grosse, Eric Moreau, Nicolas Binder   +2 more
doaj   +1 more source

Manned flying systems /mfs/ cryogenic engine [PDF]

Comparison of performance of cryogenic propulsion system with earth storable propulsion system for manned flying ...
Bhalla, L. M., Tatom, F. B.
core   +1 more source

Ladder‐Type Benzene‐Perylene Dyes with Efficient Laser Properties in the Near‐IR by Detracting/Activating Low/High Frequency Vibronic Modes

Advanced Functional Materials, EarlyView.
The NNR‐n series of oligomeric nanographenes delivers exceptional emission performance. This work shows that this performance is originated by their ladder‐type structure, which effectively deactivates low‐frequency vibronic modes. This deactivation neglects the main pathway for non‐emissive deactivation, even in the near‐infrared region. The potential
Marcos Díaz‐Fernández, Álex Farrando Pérez, Fernando Gordillo Gámez, Pedro G. Boj, José M. Villalvilla, José A. Quintana, Yanpei Wan, Daniel Aranda, José Manuel Marín‐Beloqui, Jishan Wu, Zebing Zeng, María A. Díaz‐García, Juan Casado   +12 more
wiley   +1 more source

Numerical Simulation of the Chemical Reaction on Faraday MHD Accelerator

Aerospace
Magnetohydrodynamic (MHD) is one of the most promising novel propulsion technologies with the advantages of no pollution, high specific impulse, and high acceleration efficiency.
Yingke Liao, Guiping Zhu, Guang Wang, Jie Wang, Yanchao Ding   +4 more
doaj   +1 more source

PREMIUM YACHT PROPULSION FOR EXCLUSIVE PERFORMANCE [PDF]

Design & Construction of Super and Mega Yachts 2019, 2019
SCHOTTEL offers a wide range of main and auxiliary propulsion systems for yachts. This paper will present characteristics of different propulsion solutions: The 5-bladed controllable pitch propeller for highest propulsive efficiency for changing speed or load or the EcoPeller with best values in overall efficiency and course stability.
openaire   +1 more source

Subsonic flight test evaluation of a propulsion system parameter estimation process for the F100 engine [PDF]

Integrated engine-airframe optimal control technology may significantly improve aircraft performance. This technology requires a reliable and accurate parameter estimator to predict unmeasured variables.
Gilyard, Glenn B., Orme, John S.
core   +1 more source

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

Advanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco, Valerio Francesco Annese, Valerio Galli, Ilaria Penna, Debora Russo, Marina Veronesi, Rita Scarpelli, Stefania Sabella, Mario Caironi   +8 more
wiley   +1 more source

Mechanism of Speed Loss Reduction and Propulsion Efficiency Improvement of ONR Tumblehome with Active-Controlled Stern Flaps in Resonance Waves

Journal of Marine Science and Engineering
The stern flap is a practical hull appendage equipment that enhances ship navigation performance and saves energy. The existing studies mainly focus on the fixed stern flap, other than an actively controlled one, so it is worth further exploring its ...
Lei Zhang, Chuanshun Du, Yongsen Ni, Yuchen Shang, Jianing Zhang   +4 more
doaj   +1 more source

CRISPR/Cas9‐Assisted Microrobots for Fast and Ultrasensitive “On‐The‐Fly” Next‐Generation DNA Detection

Advanced Functional Materials, EarlyView.
This work presents self‐propelled CRISPR/Cas9‐functionalized Au–MRs for rapid, amplification‐free, “on‐the‐fly” DNA detection. By harnessing motion‐assisted signal recovery, the platform achieved the limit of detection in low fM DNA concentrations, enabling detection across a wide dynamic range within only 5 min, which is significantly faster than any ...
Jyoti, Petr Michálek, Zbyněk Heger, Martin Pumera   +3 more
wiley   +1 more source

The Design, Modeling, and Experiment of a Novel Diving-Beetle-Inspired Paddling Propulsion Robot

Biomimetics
Bionic paddling robots, as a novel type of underwater robot, demonstrate significant potential in the fields of underwater exploration and development.
Jiang Ding, Jingyu Li, Tianbo Lan, Kai He, Qiyang Zuo   +4 more
doaj   +1 more source