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The only difficulty to be encountered consists in the erection and working of machinery. There can be little fear on this score. We have no doubt that any London engine-maker would hit off the whole scheme of an air-cooling machine in half an hour. What is wanted is a forcing-pump wrought by a one horse or two bullock-power.
Another advantage is that air-cooling, adopted in all the Gnome engines, is rendered much more effective by the rotation of the cylinders, though there is a tendency to distortion through the leading side of each cylinder being more efficiently cooled than the opposite side; advocates of other types are prone to claim that the air resistance to the revolving cylinders absorbs some 10 per cent of the power developed by the rotary engine, but that has not prevented the rotary from attaining to great popularity as a prime mover.
This action may be compared to that of a wet sponge from which, when compressed, a portion of the water is forced out, and when the sponge is allowed to expand, the water is drawn back. This effect is manifested by the increase of temperature in air-compressing machines, and the cold produced by allowing or forcing air to expand in air-cooling machines.
The cylinders are set desaxe with the crank shaft, and are of cast-iron, provided with radiating ribs for air-cooling; they are attached to the crank case by long bolts passing through bosses at the top of the cylinders, and connected to other bolts at right angles through the crank case. The tops of the cylinders are formed flat, and seats for the inlet and exhaust valves are formed on them.
Met Major Powell at the Cosmos Club, who told me that they would like to have me look at the air-cooling projects at the White House. Published statement that the physicians desired some way to cool the air of the President's room had brought a crowd of projects and machines of all kinds. Among other things, a Mr.
On the satellite, in the deep shadow of a protecting cliff, each of the five Earthmen paused involuntarily when they heard Tom's warning. "Forget about the time!" snapped Connel. "By the blessed rings of Saturn, we'll finish this job if it's the last thing we do!" Connel went to each of the working figures and adjusted the valve, regulating the air-cooling humidity control on their space suits.
But he stopped after a rhapsody on the divine merits of an air-cooling system, clawed his billowing black hair, and sighed, "Sounds improbable, don't it? Must be true, though; it's going to appear in the Gazette, and that's the motor-dealer's bible. If you don't believe it, read the blurbs we publish about ourselves!" Then he solemnly winked at her and went on dictating.
In this engine the steel cylinders were secured to the crank case by flanges, and radiating ribs were formed around the barrel to assist the air-cooling. Inlet and exhaust valves were actuated by push-rods and rockers actuated from the second motion shaft mounted above the crank case; this shaft also drove the high-tension magneto with which the engine was fitted.
The steel cylinders are machined from solid forgings and provided with webs for air-cooling as shown. Cast-iron pistons are used, and are connected to the crankshaft in the same manner as with the Gnome and Le Rhone engines. Petrol is sprayed into the crank case by a small geared pump and the mixture is taken from there to the piston valves by radial pipes.
Ignoring the driver's nervous instructions, Brion carefully placed Lea on the rear seat before he pulled the door shut. The car surged forward instantly, a blast of icy air pouring from the air-cooling vents. It wasn't cold in the vehicle but the temperature was at least forty degrees lower than the outer air.
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