Results 141 to 150 of about 37,359 (315)
Advanced general aviation comparative engine/airframe integration study [PDF]
The NASA Advanced Aviation Comparative Engine/Airframe Integration Study was initiated to help determine which of four promising concepts for new general aviation engines for the 1990's should be considered for further research funding.
Ellis, D. R., Huggins, G. L.
core +1 more source
A Comparison of Inlet Valve Operating Strategies in a Single-Cylinder Spark-Ignition Engine [PDF]
, 2009 This experimental work was concerned with comparison of inlet valve actuation strategies in a thermodynamic single cylinder spark ignition research engine equipped with a mechanical fully variable valvetrain on both the inlet and exhaust.
Aleiferis, PG +3 more
core
Deep Underground Science and Engineering, EarlyView.Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei +6 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.The spiral conical perforations generated during methane in situ explosion fracturing operations lead to tensile fracture propagation in shale reservoirs being governed by the combined effects of impact pressure, bedding, and aperture under explosive loading. Using multiple regression analysis and digital image correlation technology, the mechanisms of
Yabo Chai +7 more
wiley +1 more source
The Effect of Spark Timing on the Spark Ignition
Tikrit Journal of Engineering Sciences, 2013 In this work the effect of spark timing on the spark ignition engines is investigated by computer simulation and experimental test for speeds of (1500,2000,2500,3000 and 3500)rpm at spark timing of (20o,30o,40o,50o and 60o) before TDC for each speed ...
Rafeq A. Khalefa
doaj
Deep Underground Science and Engineering, EarlyView.Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang +5 more
wiley +1 more source
EcoEnergy, EarlyView.As maritime transport electrifies, bidirectional charging (V2G) offers a dual‐purpose solution for energy resilience and economic viability. This work identifies key technological advancements and lifecycle challenges utilizing practical case studies to demonstrate how V2G systems can drive decarbonization and grid stability in the marine sector ...
Jonathan Bloor +3 more
wiley +1 more source
SI Engine Simulation Using Residual Gas and Neural Network Modeling to Virtually Estimate the Fuel Composition [PDF]
, 2013 Research in electronic controlled internal combustion engines mainly focuses on improving performance and lowering the emissions. Combustion performance depends on the geometry of cylinders and on the design of all mechanical parts, which are based ...
Chan, K. Y. +4 more
core
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Flame‐retardant bio‐based thermo‐flexible phase‐change composites for advanced battery thermal management. Batteries face critical challenges in thermal management, including overheating risks, poor interfacial contact, and mechanical vibration–induced performance attenuation.
Shichao Feng +7 more
wiley +1 more source
Evaluation of dissociated and steam-reformed methanol as automotive engine fuels [PDF]
Dissociated and steam reformed methanol were evaluated as automotive engine fuels. Advantages and disadvantages in using methanol in the reformed rather than liquid state were discussed.
Lalk, T. R. +2 more
core +1 more source