Results 71 to 80 of about 1,220,175 (393)

All‐In‐One Flexible MXene/PET Films via Scalable Scanning Centrifugal Casting for High Transparency and Ultra‐Wide Multispectral Electromagnetic Responses

open access: yesAdvanced Science, EarlyView.
In this study, a novel all‐in‐one MXene/PET film with a highly aligned and compact structure is fabricated via a scanning centrifugal casting method. The resulting film exhibits high optical transparency, low sheet resistance, excellent infrared stealth, and ultra‐broadband electromagnetic shielding across GHz to THz frequencies, highlighting its great
Tian‐Yu Zhang   +9 more
wiley   +1 more source

QCGAT aircraft/engine design for reduced noise and emissions [PDF]

open access: yes, 1980
The high bypass ratio QCGAT engine played an important role in shaping the aircraft design. The aircraft which evolved is a sleek, advanced design, six-place aircraft with 3538 kg (7,800 lb) maximum gross weight. It offers a 2778 kilometer (1500 nautical
Lanson, L., Terrill, K. M.
core   +1 more source

Hierarchical Icephobic Surfaces with Enhanced Photothermal Performance for Sustainable Anti‐Icing

open access: yesAdvanced Science, EarlyView.
The armored photothermal icephobic structured surface (APISS) features a hierarchical micro‐nanostructured architecture optimized for enhanced solar absorption, coated with titanium nitride (TiN) nanoparticles to maximize photothermal conversion efficiency and silica encapsulation to ensure exceptional mechanical resilience.
Lei Zhang   +7 more
wiley   +1 more source

Lightweight, low compression aircraft diesel engine [PDF]

open access: yes
The feasibility of converting a spark ignition aircraft engine to the diesel cycle was investigated. Procedures necessary for converting a single cylinder GTS10-520 are described as well as a single cylinder diesel engine test program.
Bachle, C. F.   +3 more
core   +1 more source

AN ADAPTIVE MODEL-BASED FRAMEWORK FOR PROGNOSTICS OF GAS PATH FAULTS IN AIRCRAFT GAS TURBINE ENGINES

open access: yesInternational Journal of Prognostics and Health Management, 2019
This paper presents an adaptive framework for prognostics in civil aero gas turbine engines, which incorporates both performance and degradation models, to predict the remaining useful life of the engine components that fail predominantly by gradual ...
Ogechukwu Alozie   +4 more
doaj   +1 more source

Review of the development of the probabilistic damage tolerance assessment of life-limited parts in compliance with the airworthiness regulations

open access: yesPropulsion and Power Research, 2023
Probabilistic damage tolerance is a critical method to understand and communicate risk and safety. This paper reviews recent research on the probabilistic damage tolerance design for life-limited parts.
Shuiting Ding   +4 more
doaj  

Bioinspired Liquid‐Free Ion‐Conductive Elastomers with Ultrahigh Mechanical Strength and Excellent Ionic Conductivity for Multifunctional Flexible Sensing Applications

open access: yesAdvanced Science, EarlyView.
⁻Inspired by the “brick wall” structure of pearl layer, FLICE‐110% liquid‐free ionic conductive elastomer had high mechanical strength (5.46 MPa), excellent ionic conductivity (3.29 × 10−4 S cm−1) and resilience. It can be used in smart music boxes, airplane wings and control manipulators.
Zequan Li   +13 more
wiley   +1 more source

Thrust and wing loading requirements for short haul aircraft constrained by engine noise and field length [PDF]

open access: yes
Propulsion system and wing loading requirements are determined for a mechanical flap and an externally blown flap aircraft for various engine noise levels and two engine cycles.
Bowles, J. V.   +2 more
core   +1 more source

Prediction of aircraft noise source and estimation of noise-level contours [PDF]

open access: yes, 1975
Two computer programs aid aircraft designers who need to identify noise characteristics of various aircraft and engine configurations; calculated noise levels can then be compared with community goals for noise ...
Peart, N. A.
core   +1 more source

Aircraft Engine Crankshaft Optimisation

open access: yesJournal of Middle European Construction and Design of Cars, 2014
Shrnutí Tento článek popisuje část návrhového procesu klikové hřídele vznětového dvoudobého motoru s protiběžnými písty, při níž je pro zadané průměry a délky čepů hledán optimální tvar ramen hřídele. Je zde popsán postup vzniku několika variant, které jsou následně podrobeny kritickému zhodnocení, a dále mechanismus výběru výsledného nejlepšího ...
Lubomír Drápal   +2 more
openaire   +2 more sources

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