Results 141 to 150 of about 45,704 (312)
Hybrid-electric propulsion systems for small unmanned aircraft [PDF]
, 2015 Hybrid-Electric propulsion systems combine the capabilities of silent electric flight and energy-intensive conventional flight. This work introduces a design method for small unmanned hybrid-electric aircraft. The method’s core is the propulsion system design.
openaire
Phase 1 of the near term hybrid passenger vehicle development program [PDF]
In order to meet project requirements and be competitive in the 1985 market, the proposed six-passenger vehicle incorporates a high power type Ni-Zn battery, which by making electric-only traction possible, permits the achievement of an optimized control
Montalenti, P., Piccolo, R.
core +1 more source
Light‐Programmable Interfaces: From Molecular Photoswitching to Adaptive Membrane Separations
Advanced Materials Interfaces, EarlyView.This review advances an interface‐centered framework for light‐responsive membranes, linking molecular photoswitches (azobenzene (AZO), spiropyran (SP), diarylethene (DAE), donor–acceptor Stenhouse adducts (DASA), photoacid) to integration strategies in polymeric, porous, self‐assembled, and mixed‐matrix systems.
Liangliang Zhang +6 more
wiley +1 more source
Hybrid Magnetoactive Soft Elastomers: Material Development Toward Application in Diaphragm Pumps
Advanced Materials Technologies, EarlyView.Hybrid magnetoactive soft elastomeric membranes are developed by combining two different types of magnetic particles. The membranes exhibit distinct mechanical, magnetic and thermal properties owing to the unique characteristics of the two magnetic particles.
Somashree Mondal +4 more
wiley +1 more source
Turbine Electrified Energy Management (TEEM) For Enabling More Efficient Engine Designs [PDF]
NASA is investing in Electrified Aircraft Propulsion (EAP) research as part of an effort to assist industry in meeting the future needs of a global aviation market.
Culley, Dennis E. +2 more
core +1 more source
Advanced Materials Technologies, EarlyView.This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini +3 more
wiley +1 more source
End-to-End Trajectory for Conjunction Class Mars Missions Using Hybrid Solar-Electric/Chemical Transportation System [PDF]
NASA's Human Spaceflight Architecture Team is developing a reusable hybrid transportation architecture in which both chemical and solar-electric propulsion systems are used to deliver crew and cargo to exploration destinations.
Chai, Patrick R. +2 more
core +1 more source
3D Printed Multimaterial Microfluidic Transistors
Advanced Materials Technologies, EarlyView.We introduce a biocompatible, high resolution photopolymer resin that closely mimics the Young's Modulus (elasticity) and reversible stretchability (no hysteresis) of poly(dimethylsiloxane) (PDMS), enabling the fabrication of microfluidic transistors (i.e., microvalves capable of proportional amplification) by multimaterial stereolithography (mSLA ...
Alireza Ahmadianyazdi +7 more
wiley +1 more source
Solar Electric Propulsion Concepts for Human Space Exploration [PDF]
Advances in solar array and electric thruster technologies now offer the promise of new, very capable space transportation systems that will allow us to cost effectively explore the solar system.
Barrett, Michael J. +3 more
core +1 more source