| Themes > Science > Physics > Fluid Dynamics > Flying the flag for fluid dynamics > Aerodynamics > Selected Topics of Model Aerodynamics > Propulsion by Propellers > An Engine |
The lack of powerful, lightweight engines was one of the reasons for the failures of early attempts to fly. Using natural sources of energy like thermals requires quite sophisticated aircraft, which were of course not available in the beginning. When steam engines became available, they proved to be too heavy for flight, compressed air engines or twisted rubberbands could be used for smaller demonstrations, but were not practical or to heavy for man carrying airplanes. Finally the piston engine, internally burning fuel, was to become the first successful powerplant for aviation. From the early days of the Wright brothers until the 1950s this type of engine was the main source of aerial propulsion. |
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