Results 61 to 70 of about 2,483 (186)

Ramjet Nozzle Analysis for Transport Aircraft Configuration for Sustained Hypersonic Flight

open access: yesApplied Sciences, 2018
For the past several decades, research dealing with hypersonic flight regimes has been restricted mainly to military applications. Hypersonic transportation could be a possible and affordable solution to travel in the medium term and there is renewed ...
Raman Baidya   +2 more
doaj   +1 more source

Impact of Cattaneo–Christov Heat and Mass Flux on MHD Hybrid Nanofluid Flow Over an Extending Surface With Convective and Mass Flux Effects

open access: yesAsia-Pacific Journal of Chemical Engineering, Volume 21, Issue 4, July/August 2026.
ABSTRACT This study investigates the flow of a magnetized hybrid nanofluid over a permeable stretching surface. The mass and thermal transport within the system is regulated using the Cattaneo–Christov flux theory. The fluid is additionally subjected to thermophoresis, chemical reaction, Brownian motion, and activation energy effects.
Ebrahem A. Algehyne   +6 more
wiley   +1 more source

When does category spanning hurt or help producers?

open access: yesStrategic Management Journal, Volume 47, Issue 7, Page 1907-1934, July 2026.
Abstract Research Summary Scholars have theorized many factors shaping whether category spanning helps or hurts producers. We first synthesize evidence by meta‐analyzing 25 years of empirical research, which reveals a null effect of spanning on average, yet with significant subsample heterogeneity. To unpack it, we theorize and find that spanning hurts
Jungsoo Ahn   +2 more
wiley   +1 more source

Ramjet Compression System for a Hypersonic Air Transportation Vehicle Combined Cycle Engine

open access: yesEnergies, 2018
This report assesses the performance characteristics of a ramjet compression system in the application of a hypersonic vehicle. The vehicle is required to be self-powered and perform a complete flight profile using a combination of turbojet, ramjet and ...
Sasha Veeran   +2 more
doaj   +1 more source

Analysis of Aerothermal Environment Characteristics of Hypersonic Rudder Shaft Gaps

open access: yes气体物理
Rudder shaft gaps of hypersonic vehicles affect the flow structure and corresponding aerodynamic heating characteristics, resulting in local peak heating near the rudder shaft, which poses a safety risk to the local thermal protection system.
Zhiyi REN   +4 more
doaj   +1 more source

A surrogate-based flow-field prediction and optimization strategy for hypersonic thrust nozzle

open access: yesAIP Advances
The thrust nozzle is a component that directly generates thrust, which is of great importance in the design of a hypersonic propulsion system. In this study, a surrogate-based flow-field prediction and optimization strategy for hypersonic thrust nozzles ...
Helin Huang, Qiancheng Wang, Zeping Wu
doaj   +1 more source

Research on Thermal Protection of Control Rudder Shaft of Hypersonic Vehicle

open access: yes气体物理
The control rudder is a key component for controlling the attitude of hypersonic aircraft, but the gap area of the rudder is prone to serious thermal load problems.
Jiaqi QIN, Zhiwei SHI, Weilin ZHANG
doaj   +1 more source

Propagation of Elastic Waves in a One-Dimensional High Aspect Ratio Nanoridge Phononic Crystal

open access: yesApplied Sciences, 2018
We investigate the propagation of elastic waves in a one-dimensional (1D) phononic crystal constituted by high aspect ratio epoxy nanoridges that have been deposited at the surface of a glass substrate.
Abdellatif Gueddida   +4 more
doaj   +1 more source

Hypersonic Flow Theory and Hypersonic Aerodynamics [PDF]

open access: yesJournal of Applied Mechanics, 1960
Wallace D. Hayes   +3 more
openaire   +1 more source

Advances in High-Performance Ceramic Materials for Aerospace and Defence Applications: A State-of-the-Art Review

open access: yesCeramics
Ceramic materials are indispensable to aerospace and defence technologies, where structural and functional components are required to withstand extreme thermal, mechanical, and chemically aggressive environments.
Alfredo Aguilar-Elguezabal   +4 more
doaj   +1 more source

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