Page 436 - PPL-2025-9fag
P. 436

Flyveprincipper



                         5.7.2  Stabilitetsgrader ..................................................................................... 482

                         5.7.3  Længdestabilitet ..................................................................................... 483

                                5.7.3.1   Design for længdestabilitet ................................................................. 484
                         5.7.4  Tværstabilitet ......................................................................................... 485

                         5.7.5  Kursstabilitet – stabilitet omkring højaksen ........................................... 486

                                5.7.5.1   Lateralcenter (Lc) ................................................................................ 487

                                5.7.5.2   Styrtspiral ............................................................................................ 488
                         5.7.6  Rorafbalancering .................................................................................... 489

                                5.7.6.1   Faste trim-klapper ............................................................................... 489

                                5.7.6.2   Aerodynamisk afbalancering............................................................... 489
                                5.7.6.3   Servoklap ............................................................................................. 490

                                5.7.6.4   Anti servoklap ..................................................................................... 490

                                5.7.6.5   Justerbar trimklap ............................................................................... 491
                                5.7.6.6   Statisk afbalancering ........................................................................... 491

                         5.7.7  Aeroelasticitet ........................................................................................ 492

                 5.8  Begrænsninger ............................................................................................ 493

                         5.8.1  Fartmålerens begrænsninger ................................................................. 493

                                5.8.1.1   Maksimal manøvrehastighed .............................................................. 494
                         5.8.2  Lastfaktoren ............................................................................................ 495

                                5.8.2.1   Grænsefaktor og brudlastfaktor ......................................................... 496

                                5.8.2.2   Sammenhæng lastfaktor og G-kræfter ............................................... 497
                 5.9  Propellens indflydelse på flyets manøvrering ............................................. 499


                         5.9.1  Propelslipstrøm ...................................................................................... 499
                         5.9.2  P-faktor ................................................................................................... 499

                         5.9.3  Gyroskopvirkning .................................................................................... 500

                         5.9.4  Torque .................................................................................................... 500

                 5.10 Flyvningens faser ......................................................................................... 501

                         5.10.1 Start .................................................................................................................. 502

                                5.10.1.1   Banens beskaffenhed ........................................................................ 503
                                5.10.1.2   Vindens betydning for startafløbet ................................................... 503

                                5.10.1.3   Tæthedshøjde  .................................................................................. 504

                                5.10.1.4   Præstationstabeller  .......................................................................... 504



           Flyveteori PPL(A)(UL)/LAPL             Henning Andersen, Midtjysk Flyveskole© 2025            436
   431   432   433   434   435   436   437   438   439   440   441