outward and create a duct to direct high-energy air down over the surface and delay separation to a very high angle of attack.14. Explain the function of a stall strip and a vortex generator.A stall strip alters the wing’sstallcharacteristics and ensures that thewing rootstalls before thewing tips. Vortex generators are most often used to delay flow separation.19. Using figure 15-37(A), analyze the effect on flight of a broken balance cable between the left and right aileron bellcranks.A balance cable connects both aileron bellcranks, if it is broken aileron functions would be compromised. 21. Rank, in order of seriousness, the breaking of each cable in the airplane that is connected to flight controls.