Some of the aerodynamic problems raised by the development of future STOL aircraft are discussed. This discussion emphasizes three characteristic aspects of these aircraft: (1) using the engine air flow to induce most of the lifting forces generated by the wing confers a new severity to the definition of the aircraft behavior in case of engine failure: (2) the important circulation around the wing, the variations in angle of attack and sideslip due to gusts applied at low speed, subject the aircraft lifting surfaces to highly deflected flow configurations, at present very difficult to predict through calculation; this situation justifies its turn the creation of new facilities and calculation methods; and (3) a constraint relative to noise, recently made even more severe, is added to other design constraints to make more complex the economic optimation of projects, by the enforced rejection of solutions that are aerodynamically attractive but are intolerably noisy. (Author)
Aerodynamic Problems of STOL Aircraft
1973
34 pages
Report
No indication
English
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