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Viewing 161941 to 161970 of 170474
1955-01-01
Technical Paper
550109
C. R. CASE
1955-01-01
Technical Paper
550110
J. L. BROUGHTEN, C. C. MOORE
1955-01-01
Technical Paper
550139
P.F. Martinuzzi
1955-01-01
Technical Paper
550138
B. G. VALENTINE, RUSSELL CANDEE
One of the prime factors on which John Deere tractor business was established was that of designing for low operating cost. In keeping with this policy, the Model 70 Diesel tractor was introduced in November, 1954. The Diesel engine is of the direct injection type. It has two cylinders with bore of 6-1/8 and stroke of 6-3/8 inches. Rated engine speed is 1125 rpm. The engine develops approximately 50 observed belt horsepower. Specific fuel consumption is approximately 15% less than that of the average competitive farm tractors based on Nebraska Tractor Tests. Starting of the Diesel engine is accomplished by an auxiliary gasoline engine.
1955-01-01
Technical Paper
550137
ROBERT F. WICHSER
1955-01-01
Technical Paper
550149
H. C. KIRTLAND
1955-01-01
Technical Paper
550142
W. WAI CHAO
SUMMARY Inasmuch as the future of small regenerative gas turbines depends on the compactness of its heat exchanger, the problem of selecting the engine design variables to facilitate the reduction of heat exchanger size is of vital importance and has been given detailed consideration. The effects of leakage and engine pressure loss factor, in relation to the conditions of minimum flow and minimum regeneration, and the corresponding pressure ratio requirements, have all been examined. In general, the minimum flow and regeneration required decrease with the engine pressure loss factor, which is, of course, favorable to heat exchanger size. However, in order to achieve compactness, a sufficient part of the engine pressure loss factor must be apportioned to the heat exchanger gas side pressure drop. Therefore, the importance of careful aerodynamic design to reduce pressure losses through the ducting cannot be over-stressed.
1955-01-01
Technical Paper
550147
A. T. Gregory
1955-01-01
Technical Paper
550128
HANS BOHUSLAV, CARL A JACOBSON
1955-01-01
Technical Paper
550141
H. A. Fremont
1955-01-01
Technical Paper
550126
V.A. GATES, R.F. BERGSTROM, L.A. WENDT
1955-01-01
Technical Paper
550127
LEWIS C. KIBBEE
1955-01-01
Technical Paper
550134
HOMER T. SEALE
1955-01-01
Technical Paper
550125
MAURICE OLLEY
1955-01-01
Technical Paper
550131
Henry Jennings
1955-01-01
Technical Paper
550130
STANLEY S. WULC
1955-01-01
Technical Paper
550064
KARL D. SWARTZEL, MURRAY KAMRASS
Analysis of the effects of noise on the activities of human beings is usually difficult and uncertain. Recently developed means of evaluating these effects are reviewed. The analysis hinges on the use of the “Speech Interference Level”, a nearly non-subjective criterion which is particularly useful. Calculations based on measurements of noise levels near a J-47 turbojet engine, and on recently collected data for sound attenuation in the atmosphere are used as examples. Data are presented in a novel form utilizing overlays to show the ground intersection of equal speech interference surfaces when a hypothetical airplane is flying at specified altitudes. With a map of appropriate scale, the overlays may be used to study the effect of such flights on any ground area. The data are also presented in the form of hemispherical domes or igloos of specified Speech Interference Level around a point on the ground. Assumptions are described and discussed.
1955-01-01
Technical Paper
550061
R. L. WILTSE
1955-01-01
Technical Paper
550065
H. A. EUBANK, C. C. ROSS, R. C. STIFF
1955-01-01
Technical Paper
550066
R. H. BOLT
1955-01-01
Technical Paper
550067
A. E. RAYMOND
1955-01-01
Technical Paper
550069
A. C. BOTSFORD
1955-01-01
Technical Paper
550070
JOHN CAMMARATA, VINCENT ATALESE
1955-01-01
Technical Paper
550072
J. T. MDLLER
SUMMARY This paper describes the procedure used to determine vibration and shock response characteristics of a klystron. Suggestions to use these data as a basis for a proposed fragility rating.
1955-01-01
Technical Paper
550044
E. H. KELLEY, J. T. BUCKMASTER
1955-01-01
Technical Paper
550046
S. R. PRANCE
1955-01-01
Technical Paper
550047
E. A. NIX
1955-01-01
Technical Paper
550050
L. D. CONYERS

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