Results 21 to 30 of about 10,850 (227)

Experimental Study of Single Expansion Ramp Nozzle Performance Using Pitot Pressure and Static Pressure Measurements

International Journal of Aerospace Engineering, 2019
In order to overcome the drag at hypersonic speed, hypersonic flight vehicles require a high level of integration between the airframe and the propulsion system.
Sergio Nicolas Pachón Laitón, João Felipe de Araujo Martos, Israel da Silveira Rego, George Santos Marinho, Paulo Gilberto de Paula Toro   +4 more
doaj   +1 more source

Analysis of control programs and flight paths of a hypersonic vehicle in climb

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2018
Control programs and flight paths of a hypersonic vehicle in climb are analyzed. Two approaches to solving the task of determining the control programs and flight paths are identified: the traditional approach and the optimization one.
V. L. Balakin, M. M. Krikunov
doaj   +1 more source

Pseudo-shock waves and their interactions in high-speed intakes [PDF]

, 2016
In an air-breathing engine the flow deceleration from supersonic to subsonic conditions takes places inside the isolator through a gradual compression consisting of a series of shock waves.
Gnani, F., Kontis, K., Zare-Behtash, H.
core   +1 more source

Onboard Trajectory Generation of Hypersonic Morphing Aircraft

International Journal of Aerospace Engineering, 2021
In this paper, a trajectory optimization strategy for the hypersonic morphing aircraft is proposed, and the AMPI method is used to generate the online trajectory with initial state errors.
Chenxin Zhang, Yankun Zhang, Changzhu Wei   +2 more
doaj   +1 more source

Leading-to-trailing edge theoretical design of a generic scramjet

AIP Advances, 2022
The aerospace vehicle flying at hypersonic speed, using an airbreathing propulsion system based on supersonic combustion (scramjet) technology, requires a highly integrated system without moving parts, making the propulsion system and vehicle shape ...
R. Carneiro, P. P. B. Araújo, G. S. Marinho, J. F. A. Martos, A. Passaro, P. G. P. Toro   +5 more
doaj   +1 more source

Experimental Investigation of Brazilian 14-X B Hypersonic Scramjet Aerospace Vehicle

International Journal of Aerospace Engineering, 2017
The Brazilian hypersonic scramjet aerospace vehicle 14-X B is a technological demonstrator of a hypersonic airbreathing propulsion system based on the supersonic combustion (scramjet) to be tested in flight into the Earth’s atmosphere at an altitude of ...
João Felipe de Araujo Martos, Israel da Silveira Rêgo, Sergio Nicholas Pachon Laiton, Bruno Coelho Lima, Felipe Jean Costa, Paulo Gilberto de Paula Toro   +5 more
doaj   +1 more source

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

Energies, 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, Apostolos Pesyridis, Lionel Ganippa   +2 more
doaj   +1 more source

Multiscale Architecture and Mechanics of the Cell Nucleus: Implications for Disease, Bioengineering and Nanomedicine

Advanced Science, EarlyView.
Nuclear mechanical properties are inherently scale‐dependent, arising from a hierarchical architecture that spans DNA, chromatin, the nuclear envelope, and condensates. Experimental techniques and theoretical models are integrated into a cohesive multiscale framework linking nanoscale structural features to organelle‐level mechanical behavior.
Xinran Liu, Xin Chen, Qingyang Zhao, Weikang Tan, Lingrui Zhu, Kin Liao, Vincent Chan, Nicolae Goga, Winfred O. Larkotey, Yang Li, Yinghui Shi, Wenya Shu, Lin Wang, Weiqing Wang, Tian Jian Lu, Yulong Han   +15 more
wiley   +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

Asia-Pacific Journal of Chemical Engineering, EarlyView.
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, Abdul Bariq, Mounirah Areshi, Fahad Maqbul Alamrani, Zehba Raizah, Izharul Haq, Anwar Saeed   +6 more
wiley   +1 more source

Hydroxyl‐Terminated Polybutadiene‐Based Molding Powders as an Alternative Route for Manufacturing Pressed Polymer‐Bonded Explosives

Propellants, Explosives, Pyrotechnics, EarlyView.
This study presents an alternative method to manufacture polymer‐bonded explosives by partially curing an HTPB‐based molding powder prior to compaction. The study shows that the length of partial cure time before compaction directly influenced the geometric fidelity, homogeneity, compressive strength, density, and internal microstructure.
Ismar L. Chew, Cole Stephens, Ellen Ma, Julio Hernandez, Monique S. McClain   +4 more
wiley   +1 more source