The National Geographic Magazine, Volume 98National Geographic Society, 1950 - Geography Indexes kept up to date with supplements. |
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Page 310
... engine is most economical in fuel at around 90 percent of full power , compared to about 60 percent for a piston engine . Also , it gives more miles to the gallon in the rare upper air where " drag , " the friction of the atmosphere ...
... engine is most economical in fuel at around 90 percent of full power , compared to about 60 percent for a piston engine . Also , it gives more miles to the gallon in the rare upper air where " drag , " the friction of the atmosphere ...
Page 321
... engines are vibrationless compared with the piston engine . With the turboprop its advocates predict airliner speeds up to 500 miles an hour or even more . The British are building planes of this type , and in this country several ...
... engines are vibrationless compared with the piston engine . With the turboprop its advocates predict airliner speeds up to 500 miles an hour or even more . The British are building planes of this type , and in this country several ...
Page 322
... engine plane is specially equipped to hunt down the new snorkel submarines that " breathe " through a tube and can travel for weeks under water . Neptunes have amazingly long range- " long legs , " airmen say . One , the famed Truculent ...
... engine plane is specially equipped to hunt down the new snorkel submarines that " breathe " through a tube and can travel for weeks under water . Neptunes have amazingly long range- " long legs , " airmen say . One , the famed Truculent ...
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