Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Uri Fehr"'
Autor:
Uri Fehr
Publikováno v:
Journal of Geophysical Research. 72:2403-2417
Rocket engine noise study in infrasonic range from launching pad ignition phase through flight phase, including ignition signals from upper stages
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19260e693a97ec0b57e1922d1f3b33cd
https://doi.org/10.1029/jz072i009p02403
https://doi.org/10.1029/jz072i009p02403
Autor:
Uri Fehr
Publikováno v:
The Journal of the Acoustical Society of America. 42:991-1000
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3efda36f28660d36a808bc2725fbc3a
https://doi.org/10.1121/1.1910708
https://doi.org/10.1121/1.1910708
Autor:
Uri Fehr, Carl Gazley
Publikováno v:
Review of Scientific Instruments. 38:1502-1507
The behavior of an oscillating mass flow through a series of capillary tubing ending in a large reservoir, and representing the fluid mechanics system of the modified Moore variometer used by UCLA as an infrasound detector system, is analyzed both th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a681a4ccdb8f7b78b3465eafda099f7
https://doi.org/10.1063/1.1720571
https://doi.org/10.1063/1.1720571
Autor:
Uri Fehr, L. C. McGahan
Publikováno v:
The Journal of the Acoustical Society of America. 41:587-592
A system is discussed for the instrumentation of infrasonic and hydromagnetic waves traveling through the atmosphere and the ionosphere. Two large missiles were used as the sources of energy. The advantages of the instrumentation system are: a minimu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2c5d48479ba5b8fb5e548f15a5f8696
https://doi.org/10.1121/1.1910384
https://doi.org/10.1121/1.1910384
Autor:
Uri Fehr, L. C. McGahan
Publikováno v:
The Journal of the Acoustical Society of America. 42:1001-1007
Large quantities of ultra low‐frequency acoustic data accumulated over long periods of time can be analyzed by several methods. Preliminary analysis of the analog waveform determines specific areas of primary interest prior to digital‐computer an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b3b68c0cae35cc9cda6fa090838ad63
https://doi.org/10.1121/1.1910681
https://doi.org/10.1121/1.1910681
Publikováno v:
Review of Scientific Instruments. 38:778-790
Sensor and calibration techniques for measurement of infrasonic and gravity waves noting error control and possible applications
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e7274dba3864c5a345370e01249d4f3
https://doi.org/10.1063/1.1720889
https://doi.org/10.1063/1.1720889
Publikováno v:
The Journal of the Acoustical Society of America. 48:12-20
Long‐range infrasound from large rockets launched at Cape Kennedy have been recorded and studied since 1957 by a variety of low‐frequency acoustic sensors. Dominant energy ranges from 0.1 to 2 Hz. Signals can be grouped into early (apparently sup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9552ae4b725bd0faf10b73c6e01a432c
https://doi.org/10.1121/1.1912102
https://doi.org/10.1121/1.1912102
Publikováno v:
The Journal of the Acoustical Society of America. 43:1129-1136
The electromechanical piston used as a generator of infrasound in the calibration facility is evaluated. It is concluded from theory that the system can generate efficiently infrasonic waves in an environment of 800 litres covering the frequency rang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea2533a68961e73ba7689d88e31d3ef5
https://doi.org/10.1121/1.1910948
https://doi.org/10.1121/1.1910948
Autor:
Uri Fehr, L. C. McGahan
Publikováno v:
Journal of Geophysical Research. 74:868-875
Acoustic and electromagnetic energy propagation in lower ionosphere and atmosphere for energy pulse generation by chemical explosion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0672cff85efe2e1147be3ad3352f56bd
https://doi.org/10.1029/ja074i003p00868
https://doi.org/10.1029/ja074i003p00868
Autor:
L. C. McGahan, Uri Fehr
Publikováno v:
The Journal of the Acoustical Society of America. 46:485-491
The source characteristics of the Saturn F‐1 engine in the infrasonic frequency range of 0.1–20 Hz and the seismic and magnetic fluctuations from 4 to 16 Hz have been ascertained. The acoustic signals have shown a characteristic ignition and cuto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f27ea913fc3747ac2b1ef9e631b23471
https://doi.org/10.1121/1.1911723
https://doi.org/10.1121/1.1911723