Results 121 to 130 of about 9,407 (294)
Flight effects on the aero/acoustic characteristics of inverted profile coannular nozzles [PDF]
The effect of simulated flight speed on the acoustic and aerodynamic characteristics of coannular nozzles is examined. The noise and aerodynamic performance of the coannular nozzle exhaust systems over a large range of operating flight conditions is ...
Kozlowski, H., Packman, A. B.
core +1 more source
Advanced Materials Technologies, EarlyView.This work presents a fully synthetic, 3D‐printed dynamic heart model with left‐side anatomy featuring sutured mitral valve chordae tendineae analogs, embedded actuators for physiologic wall contraction, and customized flexible pressure sensors for the left ventricle.
Alejandro Guillen Obando +7 more
wiley +1 more source
Zhileng xuebao, 2012 Experimental studies on the transcritical CO2 two-phase ejector refrigeration cycle were carried out, and the effects of the working conditions and the geometric parameters of the ejector on the performance of the system were analyzed.
Li Qian +3 more
doaj
Study of aerodynamic technology for single-cruise-engine VSTOL fighter/attack aircraft, phase 1 [PDF]
A conceptual design and analysis on a single engine VSTOL fighter/attack aircraft is completed. The aircraft combines a NASA/deHavilland ejector with vectored thrust and is capable of accomplishing the mission and point performance of type Specification ...
Foley, W. H. +2 more
core +1 more source
Advanced numerical simulations of two-phase CO2 ejectors
, 2019 Over the last decade, Carbon dioxide (R744) a natural fluid has gained significant interest as a potential substitute for synthetic refrigerants commonly used in refrigeration, air-conditioning, and heat pump systems. Because of CO2 properties, such cycles generally operate in transcritical conditions.
openaire +1 more source
On–Off Switchable Micromotors for Use in Steerable Microvehicles
Advanced Robotics Research, EarlyView.Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson +3 more
wiley +1 more source
Presentation of the acoustic and aerodynamic results of the Aladin 2 concept qualification testing [PDF]
Wind tunnel tests were conducted of a scale model of the Aladin 2 aircraft. The propulsion system configuration is described and the air flow caused by jet ejection is analyzed.
Collard, M., Doyotte, C., Sagner, M.
core +1 more source
Development of dry coal feeders [PDF]
, 1977 Design and fabrication of equipment of feed coal into pressurized environments were investigated. Concepts were selected based on feeder system performance and economic projections.
Bonin, J. H. +3 more
core +1 more source
Hard‐Magnetic Soft Millirobots in Underactuated Systems
Advanced Robotics Research, EarlyView.This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang +4 more
wiley +1 more source
Case Studies in Thermal EngineeringThe steam ejector, as a typical energy-saving device, plays a crucial role in the ejector refrigeration system (ERS). This study proposes a parallel pressure compensation technology to mitigate the high-pressure effect of the mixing chamber inside the ...
Guoyu Zhang +2 more
doaj +1 more source