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b9162527 |
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CoU |
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20170802021956.0 |
| 008 |
110112e193705 dcua bt f000 0 eng d |
| 035 |
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|a (OCoLC)ocn696358401
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| 035 |
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|a (OCoLC)696358401
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| 040 |
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|a LHL
|b eng
|c LHL
|d OCLCF
|d OCLCO
|d OCLCQ
|d COD
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| 049 |
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|a COD9
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| 086 |
0 |
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|a Y 3.N 21/5:8/825
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| 086 |
0 |
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|a Y 3.N 21/5:8/825
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| 088 |
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|a NACA TM 825
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| 100 |
1 |
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|a Ernsthausen, W.
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| 245 |
1 |
4 |
|a The source of propeller noise /
|c by W. Ernsthausen.
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| 260 |
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|a Washington, D.C. :
|b National Advisory Commitee for Aeronautics,
|c [1937]
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| 300 |
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|a 10 pages, 7 unnumbered pages :
|b illustrations ;
|c 27 cm.
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| 336 |
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|a text
|b txt
|2 rdacontent.
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| 337 |
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|a unmediated
|b n
|2 rdamedia.
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| 338 |
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|a volume
|b nc
|2 rdacarrier.
|
| 490 |
1 |
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|a Technical memorandums ;
|v no. 825.
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| 500 |
|
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|a "May 1937."
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| 500 |
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|a NACA TM Number 825.
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| 500 |
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|a Translated from Luftfahrtforschung. Volume 13, Number 12, pp. 433-440, December 20, 1936, by the National Advisory Commitee for Aeronautics.
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| 504 |
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|a Includes bibliographical references.
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| 520 |
3 |
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|a A two blade propeller of 40 cm diameter and zero pitch was explored for its noise development; it could be whirled up to 17,000 rpm - i.e., a tip speed of 355 meters/second. To obtain the power loss N(sub m) of the propeller for comparison with the produced acoustical power N(sub A) the engine performance characteristics were measured with and without propeller. The result is the sought-for relation c, that is, curve c' after correction with the engine efficiency.
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| 650 |
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0 |
|a Propellers, Aerial
|x Noise.
|
| 650 |
|
0 |
|a Noise
|x Measurement.
|0 http://id.loc.gov/authorities/subjects/sh85092180.
|
| 650 |
|
7 |
|a Noise
|x Measurement.
|2 fast
|0 (OCoLC)fst01038362.
|
| 650 |
|
7 |
|a Propellers, Aerial
|x Noise.
|2 fast
|0 (OCoLC)fst01079106.
|
| 710 |
1 |
|
|a United States.
|b National Advisory Committee for Aeronautics.
|0 http://id.loc.gov/authorities/names/n79060141
|1 http://isni.org/isni/0000000106642010.
|
| 830 |
|
0 |
|a Technical memorandum (United States. National Advisory Committee for Aeronautics) ;
|v no. 825.
|0 http://id.loc.gov/authorities/names/no2009014150.
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| 907 |
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|a .b91625270
|b 03-19-20
|c 08-02-17
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|b 08-02-17
|c r
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|g dcu
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|i 1
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| 907 |
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|a .b91625270
|b 09-01-17
|c 08-02-17
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| 944 |
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|a MARS - RDA ENRICHED
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| 907 |
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|a .b91625270
|b 08-02-17
|c 08-02-17
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| 948 |
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|a gro17/18:cjg
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| 999 |
f |
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|i 1ce83c90-cf1d-5a0a-bc13-21237afb361c
|s 282deb1e-26f0-5cb5-b005-36b312c439ea
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| 952 |
f |
f |
|p Can circulate
|a University of Colorado Boulder
|b Boulder Campus
|c Norlin
|d Norlin Library - Basement - Government Information - US
|e Y 3.N 21/5:8/825
|h Superintendent of Documents classification
|i document
|m U183073176333
|n 1
|
