But you know yourself, Tom, that putting this new propelleron your airship, changing the wing tips, and re-gearing the motor has made an altogether different sort of a craft of it.
Despite the choking vapor, the young inventor stuck to his task of regulating the motor, and in a short while the smoke became less, while the big propeller blades whirled about more evenly.
A moment later, the Falcon, meanwhile having been allowed to drift as close as possible to the dimly-seen line of prisoners, Tom set in motion the great motor, the propeller blades heating the air fiercely.
It was pointed out to the admiral that stopping the propeller resulted as a rule in the stopping of the ship likewise.
After a little delay the propeller began to revolve, but as it had not moved since the ship was sold to Turkey—at more than cost price by a power which had no use for it—it made a tremendous racket.
The Bat was very fast, and on the morning of the 29th we were near Cape Hatteras; Captain Barnes, noticing a propeller coming out of Hatteras Inlet, made her turn back and pilot us in.
Cliff, with a mighty pull, set the propeller whirling and climbed hastily into his place.
Which help consisted mainly of turning the propeller whenever Bland wanted to start the motor; a heartbreaking task in that broiling heat, especially since the motor half the time would not start at all.
If they did, they could not fly off with the Thunder Bird unless they happened to be carrying an extrapropeller around with them.
I've turned that darned propeller enough to fly from here to New York.
He climbed in, and Bland raised his two arms to the propeller blade and waited with visible impatience for the word.
Crimson, the perspiration streaming down his cheeks like tears, Johnny swung on that propeller until Bland's grating voice singing out "Contact!
Cliff smiled, dropped his cigarette and ground it under his heel, then reached up and grasped the propeller blade.
The water about the craft was very muddy and thick now, caused by the propeller stirring up the bottom of the river.
The propeller seems to be in deep water," spoke Betty, taking an observation over the stern.
From this point it bends out in a semicircle to protect the propeller and the front of the machine and car, this portion of it being very elastic by reason of the laminations having free play one upon the other.
Each propeller is placed just under the leading edge of a plane, Fig.
The consequence is that an aeroplane which is safe enough while the propeller is exerting a tractive force of some 250 lbs.
Start the power slowly and see what the propeller will do.
On the precision of this operation depends all our lives, for should the propeller strike one of those pillars it will be torn away and our hope of escape gone.
Was the motor simply dead, or was the propeller gone?
Four-bladed propeller driven by chain-gearing from engine within the hull.
Here are two curved blades, so shaped that, when the propeller is made to revolve quickly, these blades will act powerfully upon the air.
In one of his notebooks, too, he made a sketch of a helicopter machine which was to have a lifting propeller 96 feet in diameter, and to be built of iron with a bamboo framework.
So he flew for lap after lap, never rising higher or flying lower, and with the Gnome behind him emitting a booming hum as it whirled the propeller without falter or flag.
Orville, after excellent flights in America, was carrying a military officer as passenger when a chain driving a propeller broke in mid-air.
The motor is bolted in its framework, the propeller fitted, and the whole construction receives a final overhaul.
They inclined naturally to the idea of an aerial propellersuch as that illustrated in Fig.
In an early and simple form, the aerial propeller was as shown in Fig.
The landing was abrupt--in fact, made with desperate haste; and the chassis of the machine was broken by the shock and the propeller splintered.
Four-bladed propeller (mounted higher than the crank-shaft bearing the engines, and driven by a chain gearing).
The Voisin brothers, and other French makers, did not approve of the two-propeller system of the Wrights: they preferred one screw, revolving at high speed.
In other engines the cylinders were stationary, and their pistons, moving up and down in the cylinders, turned a crank-shaft to the end of which the propellerwas fixed.
As long as they are at play on their machines these whirr like the propellerof a Handley-Page.
The aeroplane propeller is revolving slowly, tail away from the enemy, clicking and rattling as it turns.
In size they wore relatively tiny, but possessed far greater power than anypropeller known.
It seats two in little cockpits placed one on each side of the centre line where the propeller shaft runs.
I went out into the field to choose my steed and decided upon a big "pusher," where both aviator and passenger sit forward with the propeller and the roar of the motor behind them.
There was only space and the humming of the motor and the faintly gleaming circle of light of the propeller and those two rigid wings with their tracery of braces.
There were times when they believed the pounding seas must snap one of the propeller shafts.
A little oil, fed steadily, and they go on turning the propeller shaft day after day, if necessary.
This night of hurricane was full of dangers, even though the propeller shafts should hold and the motors continue to work under the strain.
If our propeller shafts snapped, under the strain, and we drifted in the trough of the sea, I don’t know how long we could keep afloat.
He darted to the forward end of the passageway, then halted, crouching, his eyes rolling almost as fast as the propeller shafts could revolve.
The post supporting the outer end of a propeller shaft.
Doubtless he misjudged the speed of the newcomer, but be that as it may, the tip of the propeller blade touched him and simultaneously many things happened.
The propeller had become entangled in a piece of floating net, and so rendered useless.
A most curious device was the utilization of heavy cloth for the propeller blades.
The rotary ventilator stopped working when the motor itself stopped, and I had been obliged to stop the motor to prevent the propeller from tearing the suspension wires near it when the balloon first began to sag from loss of gas.
Room for only one operator was provided and the latter was to turn the propeller by means of pedals to be worked by his feet.
By the time I had got back to the fortifications of Paris, near La Muette, it caused the suspension wires to sag so much that those nearest to the screw-propeller caught in it as it revolved.
We had the Lewis gun on our upper wing and the Vickers down below, that shoots through the propeller as the propellerturns around.
But one curious disadvantage which would not at first suggest itself to the lay mind was the fact that the roar of the propeller was so great that no possible communication could pass between the pilot and the gunner.
I could see a whirling metal propeller on the torpedo revolve as it sank.
On one of its trials a propeller blade flew off and penetrated the envelope, but the ship returned to earth in safety.
When the bomb begins sinking the little propeller is turned as it is pulled down through the water.
It may be worth while to revert for a moment to the distinction drawn in a preceding paragraph between the pusher propeller and the tractor which revolved in front of the aviator and of his machine gun.
A propeller driven by a motor, the size and power of both to be as great as permitted by the lifting power of the balloon.
I saw the propeller cutting and tearing at the wires.
The pilot threw over the electric switch, and the great propeller gradually ceased to revolve.
On, on they sped; the whir of the propeller alone breaking the awful silence that surrounded them.
As the engines commenced their work the great propeller turned rapidly on its axis, and the Orion, describing a great circle, took a course which would soon bring her over Newfoundland.
The propellerraced madly; then the engine stopped--dead.
The steamer pitched so that her propeller was frequently entirely out of the sea.
The propeller blades of a good canaller will move twelve to fifteen miles, in their line of spiral movement, to get two to three miles headway for the boat.
The John Durston had a propeller built in with her rudder, and driven with a vertical shaft, extending down through a cylindrical rudder-post, but was unfit for service.
The Eclipse, of New York, was new, and had oscillating propeller engines.
The canal-boat Niagara had the Cathcart propeller supplied, which consisted of a union of the propeller and rudder by a universal joint in the shaft, and so adjusted as to unite them for steerage purposes.
The variations from the commonpropeller and paddle-wheel, in the miscellaneous devices, are all under reductions of merit.
She has a common propeller in her bow, with a recess from the water-line inclined to twenty feet aft to the bottom.
Newman is a common propeller and double-deck boat, and carries two hundred and ten tons.
The propeller roared and as the craft sped forward, with a warning shout from Frank that scattered the crowd like chaff, the lad threw on the searchlight which had been rapidly adjusted as the plane was wheeled out.
He hastened over to where the Grasshopper, her engine still going and her propeller still beating the air, lay like a dismal wreck in the trees on the other side of the pig-pen.
A man had been almost killed on the grounds a few days before, when a propeller blade had torn loose under the terrific strain of its 1200 revolutions a minute, and the boys were not anxious for anything like that to happen to their machine.
At Harry's cry of "All right," the young leader started up the power and threw in the propeller clutch.
Then as the propeller reached its maximum velocity the terrific strain caused the holding-back grips to part and the machine had instantly darted away.
That is, it is specially designed for service in South American rivers of shallow draught where an ordinary propeller would soon get entangled in the weeds and water plants and stop.
Vell, I am oud of der race," announced philosophical Schmidt, as the propellercame to a stop.
She could be fitted with aluminum pontoons, and, with a propeller device installed, we could start her upward from the water as easily as from the land.
Once more Frank threw in the propeller clutch and started up the engine.
It didn't take long to bolt the engine down, lay the propellerbearings and set the main shaft and its twin connections in place and "true" them up.
The propeller so matted with seaweed that we could make no progress.
Later--Found the propellermatted with huge growths of seaweed.
The engine broke into a roar, the propellerwas a silver streak.
The cabin plane they were to use was standing on the field, the motor turning over rhythmically, the propeller whirring.
The propeller had snapped in half and the shining red surface of the plane was scratched and blackened.
Bruce turned the propeller as he had learned to do for Brent.
It's well known that a propeller rotating at sufficient speed can be made to lift a weight into the air.
At each explosion, the gas generated was forced at an enormous pressure through the turbine to the right of the explosion chamber, thus driving the propeller fixed on the shaft.
