Zobrazeno 1 - 10
of 13
pro vyhledávání: '"L. R. Koval"'
Publikováno v:
Optimal Control Applications and Methods. 11:233-247
The time-domain Routh-approximant method for model reduction of large-scale systems is modified and enhanced in this paper. A new transformation matrix that overcomes a limitation of earlier work is proposed. This feature greatly enhances the multiva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1562f786b0ab85114dfb70c542307c07
https://doi.org/10.1002/oca.4660110305
https://doi.org/10.1002/oca.4660110305
Publikováno v:
Journal of Aircraft. 19:31-38
An analytical method is described for prediction of the interior noise levels for propeller-driven aircraft, given the exterior noise signature, its harmonic spectrum, and a description of the fuselage sidewall structure and various candidate "add-on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbda4337af67f51e1c3baa63ed618c12
https://doi.org/10.2514/3.57352
https://doi.org/10.2514/3.57352
Publikováno v:
Journal of Aircraft. 19:39-45
An analytic study was performed to define the acoustical treatment weight penalties that are required to provide an interior noise level of 80 dBA in propfan-power ed aircraft at Mach 0.8 cruise. The prediction method, described in a companion paper,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5af8e92dceb3e595c4a1cb97d086644
https://doi.org/10.2514/3.57353
https://doi.org/10.2514/3.57353
Publikováno v:
AIAA Journal. 7:1793-1796
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cdce7600afff646b79fc2ebfe3e1bb1
https://doi.org/10.2514/3.5393
https://doi.org/10.2514/3.5393
Autor:
J. D. Wood, L. R. Koval
Publikováno v:
AIAA Journal. 1:2576-2582
Exploratory experimental and analytical program on the buckling of thin-walled cylinder shells under dynamic loads
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2eee0e591cff3ae6c9686b99f2bd9bea
https://doi.org/10.2514/3.2114
https://doi.org/10.2514/3.2114
Autor:
H. F. Korman, L. R. Koval
Publikováno v:
AIAA Journal. 9:1398-1400
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aaea8876be068b6cc50e92f59281839e
https://doi.org/10.2514/3.6360
https://doi.org/10.2514/3.6360
Autor:
P. G. Bhuta, L. R. Koval
Publikováno v:
Journal of Applied Mechanics. 31:548-550
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bbb7ca724259d6d31c0dd6ef14fb851
https://doi.org/10.1115/1.3629679
https://doi.org/10.1115/1.3629679
Publikováno v:
6th Aeroacoustics Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c42907a5ae2936da0df8252906856a82
https://doi.org/10.2514/6.1980-1000
https://doi.org/10.2514/6.1980-1000
Publikováno v:
6th Aeroacoustics Conference.
The acoustical treatment mass penalties required to achieve an interior noise level of 80 dBA for high speed, fuel efficient propfan-powered aircraft are determined. The prediction method used is based on theory developed for the outer shell dynamics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e85da58ef40ae08f34925823840579ea
https://doi.org/10.2514/6.1980-1001
https://doi.org/10.2514/6.1980-1001
Publikováno v:
10th Aeroacoustics Conference.
In the present comparative study of aircraft interior noise levels due to airborne and structureborne paths for a given propeller source, a structure model is used that treats the fuselage interior as a rectangular cavity with five rigid walls; the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::203995a1b12ae4a4520e502a43773f91
https://doi.org/10.2514/6.1986-1863
https://doi.org/10.2514/6.1986-1863