Results 71 to 80 of about 2,660 (259)

Advanced propfan analysis for the family of commuter airplanes [PDF]

Advanced propfans were selected to be used throughout the family of commuters. These propulsion systems offer a 25 to 28 percent fuel savings over comparably sized turbofans operating in the 1990s.
Creighton, Tom, Haddad, Raphael, Hendrich, Louis, Hensley, Doug, Morgan, Louise, Russell, Mark, Swift, Gerald A.   +6 more
core   +1 more source

Comparative analysis of different wave turbine designs based on conditions relevant to northern coast of Egypt [PDF]

, 2017
Wave energy has a great potential to solve the unrelenting energy deficiency in Egypt. The present work recommends Wells turbine as a suitable choice for the Egyptian coasts due to its simple and efficient operation under low input air flow. In addition,
Day, Alexander, El-Shaib, Mohamed, Sharara, Ashraf, Shehata, Ahmed, Xiao, Qing   +4 more
core   +1 more source

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

Advanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe, Sebastian Mettes, Eduardo Francke, Kenneth W. Allen, Yi Chen Mazumdar   +4 more
wiley   +1 more source

Effect of the Radial Velocity Distribution on the Loss Generation of a Contra-Rotating Fan in a Ventilation System. [PDF]

Entropy (Basel), 2023
Jia X, Zhang X, Guo K, Li X.
europepmc   +1 more source

Fan blade protection system [PDF]

, 1993
In one type of aircraft propulsion system, propeller blades are mounted on a ring which surrounds a turbine. An annular space exists between the turbine and the ring. If a propeller blade should break free, the unbalanced centrifugal load tends to deform
Hauser, Ambrose A., Hermans, Thomas C., Wakeman, Thomas G.   +2 more
core   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

Coupling analysis of contra-rotating fan interstage pressure pulsation and blade vibration based on wavelet reconstruction. [PDF]

PLoS One, 2021
Zhang X, Dai C, Jin Z, Dykas S, Zhang G.
europepmc   +1 more source

Installation Effects of a Propeller Mounted on a High-Lift Wing with a Coanda Flap. Part I: Aeroacoustic Experiments [PDF]

, 2014
In this contribution, we present aeroacoustic experiments concerning installation effects of propellers. Such installation effects are important as they can significantly alter the sound radiation as compared to an isolated propeller.
Akkermans, Rinie, A.D., Almoneit, Daniela, Buchholz, Heino, Delfs, Jan, Pott-Pollenske, Michael   +4 more
core   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Wells turbine for wave energy conversion : a review [PDF]

, 2016
In the past twenty years, the use of wave energy systems has significantly increased, generally depending on the oscillating water column (OWC) concept. Wells turbine is one of the most efficient OWC technologies.
Al-Ajmi, Alain Cle'ment, Amundarain, Birnir, Boccotti, Bogart, Bose, Boussinesq, Brito-Melo, Camporeale, Camporeale, Carija, Carr, Crimi, Cruz, Csanady, Curran, Curran, Curran, Davidson, Dhanasekaran, Dixon, Eiamsa-ard, Ekaterinaris, Ericsson, Falcao, Falcao, Falcao, Falcao, Falcao, Falcão, Falcão, Falcão, Falcão, Falcão, Folley, Frisch, Gareev, Gato, Gato, Gato, Gato, Gato, Gato, Gato, Ghisu, Halder, Halder, Halder, Heath, Heath, Hoffmann, Hoffmann, Horlock, Horlock, Hribernik, IEA. Medium-Term Renewable Energy Market Report, Inoue, Inoue, Inoue, Jayashankar, Jochmann, Johnson, Kim, Kim, Kim, Kim, Kim, Kinoue, Kinoue, Kinoue, Koochesfahani, Launder, Launder, Lesieur, Maeda, Mamun, Mamun, Mamun, Marimuthu, Masters, McCormick, McCormick, McCormick, McCormick, McCroskey, Menter, Mohamed, Mohamed, Mohamed, Nunes, Okuhara, Paderi, Piquet, Pozrikidis, Puddu, Radwan, Raghunathan, Raghunathan, Raghunathan, Raghunathan, Raghunathan, Raghunathan, Ridluan, Rosa, Sagaut, Sampath, Santhakumar, Saqr, Saqr, Saqr, Sarmento, Schmitt, Scholz, Secchiaroli, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Setoguchi, Shaaban, Shaaban, Shehata, Shehata, Shida, Shih, Soltanmohamadi, Speziale, Starzmann, Starzmann, Starzmann, Suzuki, Taha, Taha, Takao, Takao, Takao, Takao, Takao, Takao, Taylor, Thakker, Thakker, Thakker, Thakker, Thakker, The Department of Business, Economic Development, and Tourism (DBEDT), Tindall, Torre-Enciso, Torresi, Torresi, Torresi, Tsinober, Twidell, Washio, Watterson, Watterson, Weinig, Whittaker, Whittaker, Whittaker, Wilcox, Wilcox, Wilcox, Yakhot, Zhang, Zorović   +175 more
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