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Little was said as on and on through the polar night the aeroplane drove, the great wind of the roof of the world harassing her savagely, viciously, as if it resented her intrusion into the long hidden arcana of the polar Plateau. It grew so bitter cold that the chill ate even through their furs and air-proofed clothing.
On the other hand, it appeared sadly deficient in lifting power as compared with the calculated lift of curved surfaces of its size... we decided to arrange our machine for the following year so that the depth of curvature of its surfaces could be varied at will, and its covering air-proofed.
We decided to arrange our machine for the following year so that the depth of the curvature of its surfaces could be varied at will and its covering air-proofed. Our attention was next turned to gliding, but no hill suitable for the purpose could be found near our camp at Kitty Hawk.
In order to make sure that this was not due to the porosity of the cloth, we constructed two small experimental surfaces of equal size, one of which was air-proofed and the other left in its natural state; but we could detect no difference in their lifting powers.
In order to make sure that this was not due to the porosity of the cloth, we constructed two small experimental surfaces of equal size, one of which was air-proofed and the other left in its natural state; but we could detect no difference in their lifting powers.
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