Take-off and landing behavior of two typical VTOL aircraft (jet and propeller driven) were investigated from the noise point of view. Various factors (thrust, thrust angle, flap shutter position, transition angles, etc.) influence noise. A digital computer simulation program was used to define a noise protected zone. Certain criteria must be satisfied, such as minimum fuel consumption, minimum take-off time, and minmum noise. In all cases, other then the landing of VTOL propeller craft (where fuel consumption is minimum and noise optimum), increasing excess take-off thrust enlarges the noise protected zone. Air temperature and humidity must be taken into account if reliable results are to be obtained.
Flugmechanische Untersuchung Zum Problem Steiler Landeanfluege fuer V/STOL-Flugzeuge. (Aeronautical Research into Vertical Problems in V/STOL Aircraft Approach Landing)
1978
157 pages
Report
No indication
English