scispace - formally typeset
Search or ask a question
Institution

Vaughn College of Aeronautics and Technology

EducationNew York, New York, United States
About: Vaughn College of Aeronautics and Technology is a education organization based out in New York, New York, United States. It is known for research contribution in the topics: Gravitational microlensing & Planetary system. The organization has 727 authors who have published 708 publications receiving 14082 citations. The organization is also known as: College of Aeronautics.


Papers
More filters
Journal ArticleDOI
TL;DR: In this article, a simplified scheme of four chemical reactions is chosen to represent the kinetics of the hydrogen-oxygen system; m particular, this scheme includes the influence of the hydroxyl radical.
Abstract: A simplified scheme of four chemical reactions is chosen to represent the kinetics of the hydrogen-oxygen system; m particular, this scheme includes the influence of the hydroxyl radical. The diffusion flame supported by this set of reactions is assumed to form behind a (planar, two-dimensional) body of parabolic meridian profile with downstream-pointing vertex. The body initially separates the oxygen and hydrogen streams, which are assumed to have equal speeds and pressures far upstream. (The pressure is subsequently assumed to be constant everywhere.) For pressures of about one atmosphere it is found that nett reaction rates can be treated as infinitely fast, the four reactions then yield four chemical equilibrium equations whose behaviour is dominated by the largeness of the equilibrium constant for the (thermal) dissociation-recombination reaction of hydrogen. The flame-sheet model emerges as the limiting solution when the reciprocal of this large quantity is allowed to vanish. The method of matched asymptotic expansions is used to investigate the structure of the flame which results from a relaxation of this limit. The results bear a satisfactory resemblance to some experimental measurements which, although made in other gas mixtures, exemplify the behaviour of the type of diffusion flames considered.

25 citations

Book ChapterDOI
01 Jan 1966
TL;DR: The problem of designing the lightest framework which will equilibrate a system of given forces was first considered by A. G. M. Michell and structures designed according to his principles are called “Michell structures”.
Abstract: The problem of designing the lightest framework which will equilibrate a system of given forces was first considered by A. G. M. Michell [1]. Structures designed according to his principles are therefore called “Michell structures”.

25 citations

Proceedings ArticleDOI
21 Jun 1998
TL;DR: In this article, the performance of a varactor loaded, probe-fed microstrip patch antenna with an effective impedance bandwidth of 50% is achieved centred around a frequency of 220 GHz.
Abstract: This paper presents the performance of a varactor loaded, probe-fed microstrip patch antenna An effective impedance bandwidth of 50% is achieved centred around a frequency of 220 GHz The simple transmission line model is used to predict the resonant frequency, and practical results obtained showed a good agreement between the predicted and measured values

25 citations

Journal ArticleDOI
Valerio Bozza1, Valerio Bozza2, Yossi Shvartzvald3, Andrzej Udalski4, S. Calchi Novati2, S. Calchi Novati3, Ian A. Bond5, Chang S. Han6, M. Hundertmark7, Radosław Poleski4, Radosław Poleski8, M. Pawlak4, Michał K. Szymański4, Jan Skowron4, P. Mróz4, S. Kozlowski4, Łukasz Wyrzykowski4, P. Pietrukowicz4, Igor Soszyński4, Krzysztof Ulaczyk9, C. A. Beichman3, G. Bryden3, Sean Carey3, Michael Fausnaugh8, B. S. Gaudi8, Andrew Gould8, Calen B. Henderson3, R. W. Pogge8, B. Wibking8, Jennifer C. Yee10, Wei Zhu8, Fumio Abe11, Yuichiro Asakura11, Richard K. Barry12, David P. Bennett12, Aparna Bhattacharya13, Martin Donachie14, M. Freeman14, Akihiko Fukui, Yuki Hirao15, K. Inayama16, Yoshitaka Itow11, Naoki Koshimoto15, Man Cheung Alex Li14, C. H. Ling5, Kimiaki Masuda11, Yutaka Matsubara11, Yasushi Muraki11, Masayuki Nagakane15, T. Nishioka11, Kouji Ohnishi, H. Oyokawa11, Nicholas J. Rattenbury14, To. Saito17, A. Sharan14, Denis J. Sullivan18, Takahiro Sumi15, Daisuke Suzuki12, P. J. Tristram, Y. Wakiyama13, Atsunori Yonehara16, J.-Y. Choi6, H. Park6, Youn Kil Jung6, In-Gu Shin6, Michael D. Albrow19, Byeong-Gon Park20, S. L. Kim20, C.-U. Lee20, Sang-Mok Cha20, Sang-Mok Cha21, D. J. Kim20, D. J. Kim21, Yongseok Lee21, Yongseok Lee20, Martin Dominik22, U. G. Jørgensen7, Michael I. Andersen7, D. M. Bramich23, Martin Burgdorf24, Simona Ciceri25, Giuseppe D'Ago2, Daniel F. Evans26, R. Figuera Jaimes22, R. Figuera Jaimes27, Shenghong Gu28, Tobias C. Hinse20, N. Kains29, Eamonn Kerins29, Heidi Korhonen7, M. Kuffmeier7, Luigi Mancini25, A. Popovas7, Markus Rabus30, Sohrab Rahvar31, R. T. Rasmussen32, Gaetano Scarpetta2, Jesper Skottfelt7, Jesper Skottfelt33, Colin Snodgrass33, John Southworth26, Jean Surdej34, Eduardo Unda-Sanzana35, C. von Essen32, Yi-Bo Wang28, Olivier Wertz, D. Maoz36, M. Friedmann36, Shai Kaspi36 
TL;DR: In this paper, microlensing parallax observations of OGLE-2015-BLG-1212 decisively break a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-based data are considered.
Abstract: Spitzer microlensing parallax observations of OGLE-2015-BLG-1212 decisively break a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-based data are considered. Only eight viable models survive out of an initial set of 32 local minima in the parameter space. These models clearly indicate that the lens is a stellar binary system possibly located within the bulge of our Galaxy, ruling out the planetary alternative. We argue that several types of discrete degeneracies can be broken via such space-based parallax observations.

24 citations

Proceedings ArticleDOI
08 Jan 2001
TL;DR: The effect of streamwise slots on the interaction of a normal shock wave / turbulent boundary layer has been investigated experimentally at a Mach number of 1.3 by Smith et al. as discussed by the authors.
Abstract: The effect of streamwise slots on the interaction of a normal shock wave / turbulent boundary layer has been investigated experimentally at a Mach number of 1.3. The surface pressure distribution for the controlled interaction was found to be significantly smeared, featuring a distinct plateau. This was due to a change in shock structure from a typical unseparated normal shock wave boundary layer interaction to a large bifurcated Lambda type shock pattern. Boundary layer velocity measurements downstream of the slots revealed a strong spanwise variation of boundary layer properties whereas the modified shock structure was relatively twodimensional. Oil flow visualisation indicated that in the presence of slots the boundary layer surface flow was highly three dimensional and confirmed that the effect of slots was mainly due to suction and blowing similar to that for passive control with uniform surface ventilation. Three hole probe measurements confirmed that the boundary layer was three dimensional and that the slots introduced vortical motion into the flowfield. Results indicate that when applied to an aerofoil, the control device has the potential to reduce wave drag while incurring only small viscous penalties. The introduction of streamwise vorticity may also be beneficial to delay trailing edge separation and the device is thought to be capable of postponing buffet onset. © 2001 by A N Smith.

24 citations


Authors

Showing all 732 results

NameH-indexPapersCitations
Xiang Zhang1541733117576
Denis J. Sullivan6133214092
To. Saito511839392
Arthur H. Lefebvre411234896
Michele Meo402235557
Robin S. Langley402635601
Ning Qin372835011
Holger Babinsky332424068
B. S. Gaudi31642560
Philip J. Longhurst29802578
Michael Gaster27663998
Don Harris261292537
To. Saito25562362
John F. O'Connell22891763
Rade Vignjevic21841563
Network Information
Related Institutions (5)
Langley Research Center
37.6K papers, 821.6K citations

76% related

Technion – Israel Institute of Technology
79.3K papers, 2.6M citations

76% related

Northwestern Polytechnical University
56K papers, 657K citations

76% related

Beihang University
73.5K papers, 975.6K citations

75% related

Harbin Institute of Technology
109.2K papers, 1.6M citations

74% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20236
20223
202145
202033
201934
201841