Results 1 to 10 of about 179,602 (269)

Experimental Investigation on Velocity and Temperature Field in a Rotating Non-isothermal Turbulent Boundary Layer using Hot-wire

open access: yesScientific Reports, 2020
This experiment measured the instantaneous temperature and velocity field synchronously in non-isothermal turbulent boundary layer in a rotating straight channel with a parallel-array hot-wire probe. The Reynolds number based on the bulk mean velocity (U)
Li Gangfu   +5 more
doaj   +1 more source

Oxidation behavior of SiC/SiC composites in air at high temperature

open access: yesCailiao gongcheng, 2021
As one of important candidates for advanced aerocraft engine hot components, SiC/SiC composites would undergo oxidative and corrosive damage when subjected to high temperature combustion environment. Oxidation behavior of SiC/SiC composites at 1100-1300 ℃
HONG Zhi-liang   +5 more
doaj   +1 more source

Development of EPA aircraft piston engine emission standards [PDF]

open access: yes, 1976
Piston engine light aircraft are significant sources of carbon monoxide in the vicinity of high activity general aviation airports. Substantial reductions in carbon monoxide were achieved by fuel mixture leaning using improved fuel management systems ...
Houtman, W.
core   +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

Optimization method of combined high and low cycle fatigue P-S-N curve for aero- engine materials with small size sample

open access: yesCailiao gongcheng
The P-S-N curve of high and low cycle fatigue for aero-engine materials are essential to evaluate the service life of rotor components. However, it requires extensive experimental time and high material cost.
CAI Pei   +4 more
doaj   +1 more source

A Digital-Model-Based Approach for Defining HIRF Immunity Design Requirements of Commercial Aircraft Engine Control Systems

open access: yesIEEE Access
Commercial aircraft engine control systems must be immune to high-intensity radiated field (HIRF) effects to operate reliably and function stably under electromagnetic (EM) disturbances. However, there is a lack of effective methods to clearly define the
Bowen Wang, Shuyan Zhang, Zhe Zhang
doaj   +1 more source

Evaluating Aero-Engine Cable Harness Shielding Effectiveness Against Electromagnetic Noise Using Integrated Digital Models

open access: yesIEEE Access
Aero-engine control systems need to be immune to electromagnetic (EM) noise and function reliably in EM environments during the entire flight to guarantee flight safety.
Bowen Wang, Shuyan Zhang, Zhe Zhang
doaj   +1 more source

Sagnac Interference-Based Contact-Type Fiber-Optic Vibration Sensor

open access: yesPhotonics
The observation and evaluation of vibration signals is crucial for enhancing engineering quality and ensuring the safe operation of equipment. This paper proposes a fiber-optic vibration sensor based on the Sagnac interference principle. The polarization-
Hongmei Li   +8 more
doaj   +1 more source

Local stress analysis of a defective rolling bearing using an explicit dynamic method

open access: yesAdvances in Mechanical Engineering, 2016
This article provides insights into the localized stress in a defect zone of the rolling bearings when the rolling elements pass through the defect. A dynamic finite element model of a rolling bearing with an artificial round defect in its outer raceway ...
Zhinan Zhang, Weimin Ding, Huifang Ma
doaj   +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

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