Page 440 - PPL BEG-engelsk

Principles of flight

5.3.7.5 Drag vs speed .................................................................................. 463
5.4 Stall and spinner ..................................................................................... 464

5.4.1 Stall ..................................................................................................... 464

5.4.1.1 Development of a stall..................................................................... 465
5.4.1.2 Stall speed ....................................................................................... 465

5.4.1.3 Relationship between bank angle, G-force and stall speed .............. 467

5.4.1.4 Stall speed, bank angle and load factor ............................................ 468
5.4.1.5 Center of Gravity and stall ............................................................... 469

5.4.1.6 Stall in diffetent situations ............................................................... 470
5.4.1.7 Recovery from a stall ....................................................................... 470

5.4.2 Wing design to counteract stall............................................................ 471

5.4.2.1 Twist– geometric and aerodynamic ................................................. 472

5.4.2.2 Stall strips........................................................................................ 472
5.4.3 Spin ..................................................................................................... 473

5.4.3.1 Development of a spin .................................................................... 474

5.4.3.2 Recovery from a spin ....................................................................... 474
5.4.4 Flaps, slots and slats ............................................................................ 475

5.4.4.1 Flaps................................................................................................ 475

5.4.4.2 Side effects of using flaps ................................................................ 476
5.4.4.3 Slots and slats.................................................................................. 476

5.4.4.4 Use of slots and flaps ....................................................................... 477

5.5 The 4 forces during flight ........................................................................ 478

5.5.1 Prerequisite for level straight-ahead flight ........................................... 478
5.6 Controls and maneuvering in three axes ................................................ 480

5.6.1 Axes and control surfaces .................................................................... 480

5.6.1.1 Elevator ........................................................................................... 481
5.6.1.2 The aileron ...................................................................................... 481

5.6.1.3 Rudder ............................................................................................ 484

5.6.2 Trim ..................................................................................................... 485
5.7 Stability .................................................................................................. 486

5.7.1 Types of stability .................................................................................. 486

5.7.1.1 Static stability .................................................................................. 486

5.7.1.2 Dynamic stability ............................................................................. 486

Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© marts 2026 440