Results 81 to 90 of about 2,713 (191)

An RL-Guided Hybrid Forecasting Framework for Aircraft Engine RUL and Performance Emission Prediction

Applied Sciences
In this paper, a new hybrid prediction method is proposed for estimating remaining useful life, emissions, and performance parameters using experimental data obtained from a micro-turbojet engine. Experiments were conducted under various rotational speed
Ukbe Üsame Uçar, Hakan Aygün
doaj   +1 more source

The long term evolution of vertically-related industries [PDF]

The paper develops the argument that the long-term structural evolution of an industry depends on the evolution of a vertically-related, downstream industry. We analyse two pairs of vertically-related industries, the jet and turboprop aircraft and engine
Andrea Bonaccorsi, Paola Giuri
core  

Index to NASA Tech Briefs, 1975 [PDF]

, 1976
This index contains abstracts and four indexes--subject, personal author, originating Center, and Tech Brief number--for 1975 Tech ...

core   +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

NASA thermal barrier coatings: Summary and update [PDF]

A durable, two-layer, plasma-sprayed coating consisting of a ceramic layer over a metallic layer was developed that has the potential of insulating hot engine parts and thereby reducing metal temperatures and coolant flow requirements and/or permitting ...
Stepka, F. S.
core   +1 more source

Variability in airplane noise measurements [PDF]

Aircraft position and meteorological effects on accuracy of acoustic measurements for turbojet ...
Henderson, H. R., Hilton, D. A.
core   +1 more source

Reduction of commercial aircraft noise emission around airports. A new environmental challenge [PDF]

, 2009
Noise abatement procedures (NAPs) are considered as a necessary measure for a balanced approach of noise control around airports. Their correct implementation depends upon many factors, which vary in operation and influence the efficiency of the NAPs ...
Salah Khardi
core   +3 more sources

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

Study of the characteristics of plasma spray sealing aluminum silicon-polyester coatings [PDF]

, 2012
This study shows the homologation of the plasma spray parameters of soft abrasive AlSi - Polyester seals so that they can be applied on the TV2 - 117A compressor engines.
Mihailo R. Mrdak
core   +1 more source

Sensor failure detection for jet engines using analytical redundance [PDF]

Analytical redundant sensor failure detection, isolation and accommodation techniques for gas turbine engines are surveyed. Both the theoretical technology base and demonstrated concepts are discussed.
Merrill, W. C.
core   +1 more source