Results 71 to 80 of about 13,981 (165)

The proof of concept of uninterrupted push‐pull electromagnetic propulsion and energy conversion systems for drones and planet landers

Engineering Reports, Volume 6, Issue 1, January 2024.
We present a proof of concept to demonstrate the capability of a newly invented variable speed push‐pull electromagnetic propulsion system for uninterruptedly generating the reciprocating motion of a magnetic‐piston by a solar battery‐driven polarity changer timing circuit together with a laser‐based timing circuit for redundancy.
Sanal Kumar VR, Amrith Mariappan, U. K. Thianesh, Ajith Sukumaran, Ashish Kumar, V. K. Vijil Lal, Jerin John, Raunak Sharma, Sanjay Singh   +8 more
wiley   +1 more source

Damage and Failure of Aeroengine Blades Under Small UAV Impacts

International Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.
Unmanned aerial vehicles (UAVs) may collide with vulnerable parts of other aircrafts, such as engine blades, causing accidents. The research on small UAV impact is limited. Besides, UAV impact with propeller and rotor blades is poorly understood. In this paper, a finite element (FE) model of a UAV with a weight of 4.78 kg, turbofan blades, propeller ...
Zhibin Wu, Chi Chen, Feiying Chen, Jun Liu, Jacopo Serafini   +4 more
wiley   +1 more source

Comprehensive Survey of Micro Turbojet Experimentation: Sensor Technologies, Methodologies, and Research Trends

Machines
From advanced research platforms to Unmanned Aerial Vehicles (UAVs), Micro Turbojet Engines (MTEs) have grown to be essential parts in many different kinds of applications.
Ahmed M. Shehata, Marco P. Schoen
doaj   +1 more source

Electrostatic Signal Self-Adaptive Denoising Method Combined with CEEMDAN and Wavelet Threshold

Aerospace
A novel low-pass filtering self-adaptive (LPFA) denoising method combining complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) and a wavelet threshold (WT) strategy is proposed to solve the problem of the aero-engine gas-path ...
Yan Liu, Hongfu Zuo, Zhenzhen Liu, Yu Fu, James Jiusi Jia, Jaspreet S. Dhupia   +5 more
doaj   +1 more source

Energy, exergy, thermoecologic, environmental, enviroeconomic and sustainability analyses and assessments of the aircraft engine fueled with biofuel and jet fuel. [PDF]

J Therm Anal Calorim, 2023
Akdeniz HY, Balli O, Caliskan H.
europepmc   +1 more source

A Novel Curve-and-Surface Fitting-Based Extrapolation Method for Sub-Idle Component Characteristics of Aeroengines

Aerospace
The component characteristics of an aeroengine below idle speed are fundamental for start-up process simulations. However, due to experimental limitations, these characteristics must be extrapolated from data above idle speed.
Yibo Cui, Tianhong Zhang, Zhaohui Cen, Younes Al-Younes, Elias Tsoutsanis   +4 more
doaj   +1 more source

DBO-CNN-BiLSTM: Dung Beetle Optimization Algorithm-Based Thrust Estimation for Micro-Aero Engine

Aerospace
Thrust constitutes a pivotal performance parameter for aircraft engines. Thrust, being an indispensable parameter in control systems, has garnered significant attention, prompting numerous scholars to propose various methods and algorithms for its ...
Baijun Lei, Haozhong Huang, Guixin Chen, Jianguo Liang, Huigui Long   +4 more
doaj   +1 more source

An Experimental Investigation to Use the Biodiesel Resulting from Recycled Sunflower Oil, and Sunflower Oil with Palm Oil as Fuels for Aviation Turbo-Engines. [PDF]

Int J Environ Res Public Health, 2021
Cican G, Deaconu M, Mirea R, Ceatra LC, Cretu M.   +4 more
europepmc   +1 more source

Multi-Disciplinary Optimization of Mixed-Flow Turbine for Additive Manufacturing

International Journal of Turbomachinery, Propulsion and Power
Additive manufacturing offers new perspectives for creating complex geometries with improved design features at lower cost and with reduced manufacturing time.
Victor Loir, Bayindir H. Saracoglu, Tom Verstraete   +2 more
doaj   +1 more source

Assessment of a regulatory measurement system for the determination of the non-volatile particulate matter emissions from commercial aircraft engines. [PDF]

J Aerosol Sci, 2021
Kinsey JS, Giannelli R, Howard R, Hoffman B, Frazee R, Aldridge M, Leggett C, Stevens K, Kittelson D, Silvis W, Stevens J, Lobo P, Achterberg S, Swanson J, Thomson K, McArthur T, Hagen D, Trueblood M, Wolff L, Liscinsky D, Arey R, Cerully K, Miake-Lye R, Onasch T, Freedman A, Bachalo W, Payne G, Durlicki M.   +27 more
europepmc   +1 more source