Results 181 to 190 of about 1,306,417 (313)

Analysis of interior noise ground and flight test data for advanced turboprop aircraft applications [PDF]

Interior noise ground tests conducted on a DC-9 aircraft test section are described. The objectives were to study ground test and analysis techniques for evaluating the effectiveness of interior noise control treatments for advanced turboprop aircraft ...
Simpson, M. A., Tran, B. N.
core   +1 more source

Using time‐series remote sensing to identify and track individual bird nests at large scales

Remote Sensing in Ecology and Conservation, EarlyView.
Time‐series airborne imagery can potentially track individuals over time to collect information beyond one‐off counts. Using weekly UAS‐based imagery of wading bird colonies, we develop an automated approach to identifying nests. Our algorithmic approach detected 68–74% of known nests and exhibited similar performance to human review of imagery ...
S. K. Morgan Ernest, Lindsey A. Garner, Ben G. Weinstein, Peter Frederick, Henry Senyondo, Glenda M. Yenni, Ethan P. White   +6 more
wiley   +1 more source

Experimental Study on Abrasive Flow Polishing of Grooves and Oil Holes of Aircraft Engine Main Bearing. [PDF]

Micromachines (Basel)
Zhang Q, Yu J, Wu M.
europepmc   +1 more source

Advances in high-speed rolling-element bearings [PDF]

Aircraft engine and transmission rolling-element bearing state-of-the-art is ...
Zaretsky, E. V.
core   +1 more source

Modelling forest dynamics using integral projection models and repeat lidar

Remote Sensing in Ecology and Conservation, EarlyView.
Forests are facing increasing pressure from climate change and disturbance, yet linking individual tree trajectories to whole‐forest outcomes remains a major challenge. Our study integrates repeat airborne lidar with an Integral Projection Model to analyse demographic processes at the landscape scale.
Alice Rosen, Robin Battison, Christina M. Hernández, Oliver G. Spacey, Jessica McLean, Suzanne M. Prober, Samuel J. L. Gascoigne, Sean McMahon, Tommaso Jucker, Roberto Salguero‐Gómez   +9 more
wiley   +1 more source

Fault prediction of aircraft engine based on adaptive hybrid sampling and BiLSTM. [PDF]

Sci Rep
Hu J, Jiang X, Xu H, Zhang K.
europepmc   +1 more source

Final design proposal: Delta Group-Nood Rider 821(tm) [PDF]

The Nood Rider 821 (trademark) twin-engine, prop passenger aircraft is described. It is argued that the aircraft is very economical to operate and maintain, offering competitive advantages in the air travel marketplace.
Doherty, M. C., Fay, M. J., Hoffman, K. W., Konesky, A. L., Lilly, D. C., Moody, D. J., Pastega, C. B., Vahey, B. P.   +7 more
core   +1 more source

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

Robust Point Cloud Registration for Aircraft Engine Pipeline Systems. [PDF]

Sensors (Basel)
Liu Y, Wang Z, Huang J, Zhang L.
europepmc   +1 more source

Airplane Superchargers [PDF]

Discussed here are the principles and operation of aircraft engine superchargers used to maintain and increase engine power as aircraft encounter decreases in the density of air as altitude rises.
Noack, W G
core   +1 more source