| 摘要 |
An aircraft having at least one ramjet 1 connected to at least one propeller blade 2, the ramjet and propeller blade being rotatable and centrifugally balanced around a primary axis. In a first mode of operation the ramjet is operated to rotate the propeller about the primary axis, in a second mode of operation the ram jet is used to provide propulsive thrust to the aircraft. the propeller blade pitch is adjustable between the first and second mode of operation. The propeller blade may be lockable to a fixed position. Heat protection may be provided on portions of the aircraft near the ramjet; the heat protection is used to mitigate heating from the ramjet during transition between the first and second mode of operation.
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