Jet ve Pervaneli Uçak Farkları mülakat soruları

A jet is harder to hold on the approach profile and harder to correct. It has more momentum, weaker speed stability and a swept wing that sinks fast at low speed. Its engines spool up slowly, and it lacks propeller slipstream lift and propeller drag braking.

A jet's drag curve is flat at low speed, so many speeds need almost the same thrust. A small thrust error can start a slow, hard-to-spot speed drift. A propeller aircraft's power-required curve is steeper, so the right setting is clearer and errors show quickly.

Jets have poorer speed stability. Their approach speed (VREF, about 1.3 VS, or 1.23 VSR under current rules) usually lies in the neutral or unstable part of the drag curve. Jet thrust also barely changes with speed, while propeller thrust rises as speed falls, which helps restore speed.

Jets generally stall at higher speeds than piston propeller aircraft, and the range between their highest and lowest stall speeds is much wider. That spread comes from the large weight range and the big effect of flaps and slats on a swept wing.

A straight propeller-aircraft wing tolerates contamination better, partly because prop wash energises the airflow over it. A contaminated swept jet wing has virtually no spare margin. It flies at higher angles of attack without slipstream help, so even light frost can sharply cut lift and raise stall speed.