Results 141 to 150 of about 418,460 (316)
Trends in aircraft design [PDF]
, 1962 The improved performance of aircraft during the past decade has resulted in the need for new design and production techniques. Particular examples are integral construction and the use of sandwich panels.
Howe, D., Newell, A. F.
core
Optimization of 3D‐Printed Structured Packings—Current State and Future Developments
Chemie Ingenieur Technik, EarlyView.This paper gives an overview about structured packing development for distillation, surveying heuristic development cycles, computational fluid dynamics simulations, and additive manufacturing techniques. The emerging application of shape optimization to improve packings is emphasized, and its benefits, impact, and limitations are discussed.
Dennis Stucke +3 more
wiley +1 more source
Development of EPA aircraft piston engine emission standards [PDF]
, 1976 Piston engine light aircraft are significant sources of carbon monoxide in the vicinity of high activity general aviation airports. Substantial reductions in carbon monoxide were achieved by fuel mixture leaning using improved fuel management systems ...
Houtman, W.
core +1 more source
Polyvinylidene Fluoride: A Growing Specialty Polymer with Many Facets
Chinese Journal of Chemistry, EarlyView.Comprehensive Summary Polyvinylidene fluoride (PVDF), the second largest produced fluoropolymer, exhibits outstanding chemical, physical, electroactive and electrochemical properties and is involved in many High‐Tech applications. This review reports recent novelties in synthesis, characterization, processes and applications. Recent preparation studies
Bruno Améduri
wiley +1 more source
Design and test of aircraft engine isolators for reduced interior noise [PDF]
Improved engine vibration isolation was proposed to be the most weight and cost efficient retrofit structure-borne noise control measure for single engine general aviation aircraft.
Scheidt, D. C., Unruh, J. F.
core +1 more source
Sudan at War With Itself: Civilian Devastation in the Civil War
Conflict Resolution Quarterly, EarlyView.ABSTRACT A civil war is raging in Sudan between the Sudan Armed Forces (SAF) and the Rapid Support Forces (RSF) along with militia groups. Beginning on April 15, 2023, and continuing at least to this writing (October 15, 2025), civilian noncombatants have been subjected to bombings, beatings, torture, shootings, rape, and murder on a large scale. Since
Daniel Rothbart +3 more
wiley +1 more source
Aircraft design optimization with multidisciplinary performance criteria [PDF]
The method described here for aircraft design optimization with dynamic response considerations provides an inexpensive means of integrating dynamics into aircraft preliminary design.
Kroo, Ilan, Morris, Stephen
core +1 more source
Evolution of the water cluster in pore condensation
Droplet, EarlyView.In pore condensation, lower contact angles reduce molecular displacement (60%) and potential energy (10%), enhancing vapor capture tenfold. Pores restrict water molecule mobility, promoting condensation. On hydrophobic surfaces (124∘$^\circ$), pores stabilize embryos, ensuring uniform condensation within pores, boosting nucleation efficiency.
Boxuan Cui +4 more
wiley +1 more source
Flight comparison of the transonic agility of the F-111A airplane and the F-111 supercritical wing airplane [PDF]
A flight research program was conducted to investigate the improvements in maneuverability of an F-111A airplane equipped with a supercritical wing. In this configuration the aircraft is known as the F-111 TACT (transonic aircraft technology) airplane ...
Friend, E. L., Sakamoto, G. M.
core +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Thermal charging cells (TCS) face two main challenges that limit their practical applications: 1) Still lacking the systems suitable for operation under higher temperature environments, and 2) there are limitations in the self‐sustaining performance of continuous discharge under temperature differences, which holds critical significance for the real ...
Tingting Meng, Yimin Xuan, Yunjie Xiong
wiley +1 more source