Results 11 to 20 of about 166 (139)

Gear-Shaped High‑g Combustion Chamber for Micro Turbojet Engine Applications [PDF]

ACS Omega
Enhancing combustion efficiency and optimizing the thrust-to-weight ratio are critical technical challenges encountered in the development, application, and growth of micro turbojet engines. The high-centrifugal (high-g) combustion chamber, as an innovative combustion chamber system, has the capability to replace the primary combustion chamber of the ...
Haozhong Huang, Guixin Chen, Huigui long, Baijun Lei, Jianguo Liang   +4 more
doaj   +4 more sources

Research on the Application of Integrated Design on Micro Turbojet Engine

Hangkong gongcheng jinzhan, 2022
There are no detailed design criteria and methods for the integrated design of micro turbojet engine.The size and weight design and evaluation method for turbojet engines are used to perform the integrated design of several 9~80 kgf micro turbojet ...
CHEN Minze, CHEN Yuchun, JIA Linyuan, HUANG Xinchun, LI Sunyang   +4 more
doaj   +2 more sources

Optimum Design of Injection Ring for Micro-turbojet Engine

Hangkong gongcheng jinzhan, 2018
The fuel injection ring is an important part of the micro-turbojet engine. The uniformity of fuel injection quantity determines the uniformity of the temperature field in the combustion chamber.
Tan Kun, Wang Yun, Zhang Fei, Zhang Yangyang, Li Junjie   +4 more
doaj   +2 more sources

Experimental Investigation of a Micro Turbojet Engine Chevrons Nozzle by Means of the Schlieren Technique

Inventions, 2023
In connection with subsonic jet noise production, especially regarding the hot jet from a micro turbojet engine, we encountered a lack of recent high-resolution data in the literature describing the flow field using experimental validation through ...
Grigore Cican, Mihnea Gall, Alina Bogoi, Marius Deaconu, Daniel Eugeniu Crunțeanu   +4 more
doaj   +2 more sources

Performance and Emissions Assessment of a Micro-Turbojet Engine Fueled with Jet A and Blends of Propanol, Butanol, Pentanol, Hexanol, Heptanol, and Octanol

Fire
This study examines the impact of alcohol blends on the performance and emissions of aviation micro-turbojet engines. Thus, propanol, butanol, pentanol, hexanol, heptanol, and octanol were tested at 10%, 20%, and 30% concentrations and mixed with Jet A ...
Grigore Cican, Valentin Silivestru, Radu Mirea, Sibel Osman, Florin Popescu, Olga Valerica Sapunaru, Razvan Ene   +6 more
doaj   +3 more sources

High-Speed, Maneuverable, and Terrain-Adaptive Micro-Robot with Tree Frog-Inspired Bionic Feet. [PDF]

Adv Sci (Weinh)
A 7.5 mm micro‐robot integrates tree frog‐inspired bionic feet with an electromagnetic linear motor to achieve high‐speed locomotion, slope climbing, and precise turning. It reaches 39 body lengths per second and ascends 30° slopes. The system demonstrates strong potential for inspection tasks in confined and complex environments, such as micro‐aero ...
Zhao W, Li S, Zhang K, Zhang W, Liu D, Fang W, Zhai Y, Lei K, Zhang L, Chen H, Xu T.   +10 more
europepmc   +2 more sources

A Study of an Integrated Analysis Model with Secondary Flow for Assessing the Performance of a Micro Turbojet Engine

Applied Sciences
The objective of this study is to implement a more realistic integrated analysis model for micro gas turbines by incorporating secondary flow and combustion efficiency into the existing model, which includes main engine components such as the compressor ...
DongEun Lee, Heeyoon Chung, Young Seok Kang, Dong-Ho Rhee   +3 more
doaj   +3 more sources

Thermodynamics, Environmental and Sustainability Impacts of a Turbofan Engine Under Different Design Conditions Considering Variable Needs in the Aviation Industry. [PDF]

Glob Chall
Thermodynamic analysis is applied to the kerosene fuelled high by‐pass turbofan (HBP‐TF) engine to assess entropy, exergy, environmental and sustainability metrics for different design variables. As a novelty, entropic improvement potential index for turbomachinery components and specific irreversibility production for the whole engine are computed ...
Aygun H, Sheikhi MR, Caliskan H.
europepmc   +2 more sources

Analysis of possibility of using commercial micro turbojet engines for high-speed small-sized operational-tactical UAVs

Авіаційно-космічна техніка та технологія, 2023
Despite the technological advances that made it possible to create serial commercial micro-turbojet engines with a thrust of up to 1.0 kN, engines of this type in the class of high-speed unmanned aerial vehicles (UAVs) weighing up to 200 kg have not yet ...
Olexander Khrulev
doaj   +1 more source

Intensification of convective heat exchange of walls of heat pipe of 3D-printed micro-sized turbojet engine [PDF]

Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2022
The article considers the solution of the urgent problem of creating a micro-sized turbojet engine using 3D printing. The article describes one of the ways to cool the walls of the heat pipe of a small combustion chamber made of heat-resistant material
A. V. Pobelyansky, D. K. Dmitriev, A. A. Levikhin   +2 more
doaj   +1 more source