Record Display for the EPA National Library Catalog


Main Title Exhaust emissions from an Army M-151 equipped with a Mitsui catalyst /
Author Thomson, John C. ; Stockha, John ; Bet, Howard ; Thomso, John C.
CORP Author IIT Research Inst Chicago Ill
Publisher Mobile Source Pollution Control Program, Air Pollution Control Office, Environmental Protection Agency,
Year Published 1971
Report Number 71-22; TAEB-71-22; DOT-FA69WA-2208; 71-24,; APTD-1421
Stock Number AD-726 249
OCLC Number 41576292
Subjects Vehicles, Military--United States ; Military trucks--United States--Motors ; Automobiles--Motors--Exhaust gas--United States
Additional Subjects ( Air pollution ; Exhaust gases) ; ( Aircraft engines ; Air pollution) ; ( Jet engines ; Air pollution) ; ( Exhaust gases ; Visibility) ; Particles ; Photography ; Mathematical models ; Light transmission ; Scattering ; Turbojet engines ; Jet engine exhaust ; Smoke ; Smoke number ; Light scattering ; ( Automobile engines ; Air pollution control equipment) ; ( Motor trucks ; Air pollution control equipment) ; Performance evaluation ; Catalysts ; Air pollution control ; Automobile exhaust ; M-151 trucks(1/4-ton) ; Catalytic reactors(Exhaust systems) ; Mitsui catalytic reactor
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA/APTD-1421 Research Triangle Park Library/RTP, NC 07/02/1999
ELBD ARCHIVE EPA APTD-1421 AWBERC Library/Cincinnati,OH 01/31/2024
ELCD  EPA TAEB-71-22 NVFEL Library/Ann Arbor, MI 05/07/2012 DISPERSAL
NTIS  AD-726 249 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
NTIS  PB-218 395 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 2, [3] leaves ; 28 cm
The objective of this study was to relate the visibility of inflight jet exhaust to the SAE smoke number. A method based on photographic photometry was developed for measuring the optical density of smoke plumes. This method was related to visibility and to the smoke number through transmissometer measurements and visibility theory. A portable transmissometer, capable of operating over a wide range of optical path lengths and under varying ambient light conditions was fabricated for use on this study. The mathematical expression relating the transmission measurements to the smoke number was derived. Liminal visibility requirements of smoke trails, developed from light scattering theory, correlated with actual visual observations and the transmissometer and photometry measurements. Test results, with the engines investigated, indicate that SAE smoke numbers below 23 were associated with invisible exhaust plumes. Samples of the exhaust smoke showed the particles to be composed of lacy agglomerates. At the nozzle, the geometric median particle diameter was o.052 micrometers. At a distance of 10 nozzle diameters the geometric median particle diameter was 0.13 micrometer at cruise condition. (Author)
"March 1971." "71-22." PB-218 395. APTD-1421. APTIC No. 49688.