Results 71 to 80 of about 219,799 (293)

Control jet placement on spacecraft [PDF]

, 1969
For efficient operation and configuration design of multijet spacecraft control systems methods of linear programming are used to select combinations of individual jet-burn times which produce the desired impulses.
Crawford, B. S.
core   +1 more source

Study of Neptunium, Americium and Protactinium Addition for 300MWth GFR with Uranium Carbide Fuel

Computational and Experimental Research in Materials and Renewable Energy, 2019
A study of Neptunium, Americium, and Protactinium addition for GFR 300MWth with Uranium Carbide fuel has been performed. The purpose of this study was to determine the characteristics of addition Neptunium, Americium, and Protactinium in a 300MWth Gas ...
Ratna Dewi Syarifah, Alvi Nur Sabrina
doaj   +1 more source

Effects of Lean Burn on Combustion and Emissions of a DISI Engine Fueled with Methanol–Gasoline Blends

Energies
Methanol has significant potential as an alternative fuel for internal combustion engines. Using methanol–gasoline blends with lean-burn technology in traditional spark-ignition engines can enhance fuel economy and reduce emissions.
Miaomiao Zhang, Jianbin Cao
doaj   +1 more source

A concept for a fuel efficient flight planning aid for general aviation [PDF]

A core equation for estimation of fuel burn from path profile data was developed. This equation was used as a necessary ingredient in a dynamic program to define a fuel efficient flight path.
Collins, B. P., Haines, A. L., Wales, C. J.   +2 more
core   +1 more source

Assessment of the Performance Potential of Advanced Subsonic Transport Concepts for NASA's Environmentally Responsible Aviation Project [PDF]

NASA's Environmentally Responsible Aviation (ERA) project has matured technologies to enable simultaneous reductions in fuel burn, noise, and nitrogen oxide (NOx) emissions for future subsonic commercial transport aircraft. The fuel burn reduction target
Boeing Commercial Airplanes, Bonet J., Claus R. W., Collier Jr., F.S., Daggett D., Gern F.H., Gern F.H., Herrera Y., Herrera Y., Jegley D., Malik M., McCullers L, Miller J., Miller J., Nickol L., Ozoroski T.A., Pitera M., Siclari M.J., Van Zante E., Walsh M.J.   +19 more
core   +2 more sources

Effect of Temperature and Atmosphere on Agglomeration of Bed Particles in a Bubbling Fluidised Bed Burning Na‐Enriched Coal

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Agglomeration of bed materials during circulating fluidised bed (CFB) combustion or gasification of high‐alkali fuel is a practical challenge in industrial practice. This work investigates experimentally the effect of temperatures (700°C–900°C) and atmosphere (air equivalence ratios 1.61–0.53) on agglomeration in a lab‐scale bubbling fluidised
Zipeng Guo, Jianbo Li, Xiaofei Long, Quanhai Wang, Xiaofeng Lu   +4 more
wiley   +1 more source

Restoring the fire–grazing interaction promotes tree–grass coexistence by controlling woody encroachment

Ecosphere, 2020
Woody encroachment can convert grasslands and savannas to shrublands and woodlands, so understanding the processes which regulate woody encroachment is necessary to conserve or restore these ecosystems.
Jane F. Capozzelli, James R. Miller, Diane M. Debinski, Walter H. Schacht   +3 more
doaj   +1 more source

The Effect of Sintering Flue Gas Composition on NO Reduction in Coke

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The strategy of substituting combustion air with sintering flue gas in circulating fluidized bed (CFB) systems provides a low‐cost and highly efficient approach for the purification of sintering off‐gas. In this work, coke was employed as the reducing agent, and a high‐temperature vertical tube furnace was used to simulate the dense‐phase ...
Canbin Huang, Tuo Zhou, Hao Xie, Jinjiang Zhao, Man Zhang, Hairui Yang   +5 more
wiley   +1 more source

A STUDY ON THE INITIAL CHARACTERISTICS OF DOMESTIC SPENT NUCLEAR FUELS FOR LONG TERM DRY STORAGE

Nuclear Engineering and Technology, 2013
During the last three decades, South Korean nuclear power plants have discharged about 5,950 tons of spent fuel and the maximum bum-up reached 55 GWd/MTU in 2002.
JUSEONG KIM, HAKKYU YOON, DONGHAK KOOK, YONGSOO KIM   +3 more
doaj   +1 more source

Effect of vane twist on the performance of dome swirlers for gas turbine airblast atomizers [PDF]

For advanced gas turbine engines, two combustor systems, the lean premixed/prevaporized (LPP) and the rich burn/quick quench/lean burn (RQL) offer great potential for reducing NO(x) emissions.
Dogra, Anju S., Micklow, Gerald J., Nguyen, H. Lee   +2 more
core   +1 more source