An exploratory investigation has been conducted on a static test setup representing an external-flow jet-augmented flap arrangement with a slotted flap and a turbojet engine. The investigation consisted of tests in the static condition to determine the turning efficiency of the flap with several slot entrance configurations for a range of slot-gap heights with various flattened tailpipes on the turbojet engine.nThe results showed that the jet exhaust could be spread out to cover a reasonably wide section of the flap with a flat nozzle and that, with a properly selected ramp entrance and gap geometry, jet turning angles greater than the flapiangle and turning efficiency values greater than 90 percent could be abstained. The engine exhaust temperatures in the vicinity of the flap were found to be somewhat lower than the tailpipe temperature.
展开▼
