2 resultados para Rear Engine Automobiles.
em CaltechTHESIS
Resumo:
The purpose of this work was to develop a means of increasing the thrust of a turbojet engine by burning kerosene in the tail pipe.
A combustion system was developed which gave the following results:
(l) Maximum thrust increase using a G.E. I-14 engine was 64 per cent over straight tail pipe thrust corresponding
to 42 per cent increase over the normal engine thrust. This increase was accomplished at an engine rpm of 12,000.
(2) Increase of maximum thrust obtained was 51 per cent over the straight tail pipe thrust corresponding to 23 per cent
over the normal engine thrust. This increase was accomplished at an engine rpm of l6,000.
(3) For the thrust increases mentioned in (1) and (2) above, increases of Specific Fuel Consumption were 66 per cent
and 76 per cent respectively over normal engine SFC.
Resumo:
The span of the bridge was assumed as 100 feet. The type of bridge used is the timber Howe Truss. The height of truss was taken as 20 feet between center lines of top and bottom chords. The width was taken as 18 feet center to center of trusses. The truss was divided up into five panels 20 feet long.
It was designed according to the "General Specifications for Steel Highway Bridges" by Ketchum. For the live load for the floor and its supports, a load of 80 pounds per square foot of total floor surface or a 15 ton traction engine with axles 10 feet centers and 6 feet gage, two thirds of load to be carried by rear axles.
For the truss a load of 75 pounds per square foot of floor surface.
For the wind load the bottom lateral bracing is to be designed to resist a lateral wind load of 300 pounds per foot of span; 150 pounds of this to be treated as a moving load.
The top lateral bracing is to be designed to resist a lateral wind force of 150 pounds per foot of span.
The timber to be used in the bridge is to be Douglas fir.
The unit stresses used for timber are those of the American Railway Engineering Association.
