نتایج جستجو برای: airplane model

تعداد نتایج: 2105831  

2016
Yongliang Duan Lin Liu Guoqing Han Hongwei Liu Weidong Yu Guang Yang Huiwu Wang Haiyuan Wang Yanliang Liu Zahid Hussain Waheed

In-situ measurement of the upper ocean velocity discloses significant abnormal behaviors of two Wyrtki Jets (WJs) respectively in boreal spring and fall, over the tropical Indian Ocean in 2013. The two WJs both occurred within upper 130 m depth and persisted more than one month. The exceptional spring jet in May was unusually stronger than its counterpart in fall, which is clearly against the p...

2007
Richard V. Robinson Krishna Sampigethaya Mingyan Li Scott Lintelman Radha Poovendran David von Oheimb

[Abstract] The numerous benefits of enabling commercial airplanes to communicate over networks are only obtained at the price of introducing security threats to onboard systems. A primary threat arises from the opportunity for corruption of safety-critical and business-critical airplane loadable software distributed via networks from off-board systems. The FAA recognizes that the unprecedented ...

1996
Larry F. Hodges Benjamin Watson G. Drew Kessler Dan Opdyke Barbara O. Rothbaum

Fear of flying is a serious problem that affects millions of individuals. Exposure therapy for fear of flying is an effective therapy technique. However, exposure therapy is also expensive, logistically difficult to arrange, and presents significant problems of patient confidentiality and potential embarrassment. We have developed a virtual airplane for use in fear of flying therapy. Using the ...

2005
Thomas A. Grandine

Splines are used extensively at Boeing and throughout much of the industrial world. There are very few remaining areas in either manufacturing or engineering in which these interesting functions have yet to play a role, and their use continues to grow at a rapid rate. A spline, for the purposes of this article, is defined as any function made up of one or more polynomial pieces joined together ...

Journal: :Scientific American 1918

2013
Liu Liu Zhenwei Shi

Airplane detection has been taking a great interest to researchers in the remote sensing filed. In this paper, we propose a new approach on feature extraction for airplane detection based on sparse coding in high resolution optical remote sensing images. However, direction of airplane in images brings difficulty on feature extraction. We focus on the airplane feature possessing rotation invaria...

2010
Daniel V. Uhlig Agrim Sareen Pritam Sukumar Arjun H. Rao Michael S. Selig

Measuring flight characteristics of micro-UAVs is challenging because of their small size and low weight. These constraints prevent the use of conventional onboard measurement systems. The objective of this research was to capture the state information of a radio controlled (RC) airplane using an off-board motion tracking system and to use this state information to study the performance of the ...

1999
FRANK E. E. BARTON

The I \ ~ . C . ~ has delleloped means, including an injection impeller and ducted head h f l e s , to improre the cooling charact ee t i c s of the SS60-cubieinchdisplacement radial engines installed in a four-engine h a z y bomber. The improrements afforded proper cooling of the rear-row exhaust-ualre seats for a wide range of ~(~101-jhp angles, mixture strength, and airplane speeds. The resu...

Journal: :IEEE Transactions on Vehicular Technology 2021

Wireless connectivity in airplanes is becoming more important, demanded, and common. One of the largest bottlenecks with in-flight Internet that airplane far away from both satellites ground base stations during most flight time. Maintaining a reliable high-rate wireless connection over such long-range link thus becomes challenge. Microwave frequencies allow for long distances but lack data rat...

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