CS 22.145 Longitudinal control

• ED Decision 2003/13/RM found in: Sailplane Rule Book - Part-SAO Part-SFCL CS-22 (Nov 2022)

CS 22.145 Longitudinal control ED Decision 2003/13/RM (a) It must be possible at any speed below 1.3 VS1 to pitch the nose downwards so that a speed equal to 1.3 VS1 can be reached promptly. (1) Test conditions: all possible configurations and trimmed at 1.3 VS1. (b) It must be possible throughout the appropriate flight envelope to change the configuration (landing gear, air brakes, wing-flaps etc.) without exceptional piloting skill and without exceeding the control forces defined in [CS 22.143(c)](#_DxCrossRefBm2056272052). (c) It must be possible, without exceptional piloting skill, to maintain the sailplane in steady straight flight: (1) in towed flight, when the wing-flap configuration is changed within the range of permissible flap settings during steady straight flight; (2) when retraction or extension of the airbrakes is made at speeds between 1.1 VS1 and 1.5 VS1, where VS1 is the stalling speed with airbrakes retracted or extended, whichever is the higher, for a given flap position. (3) when gradual change of the wing-flap configuration within the range of permissible flap settings is made during steady horizontal flight at 1.1 VS1 with simultaneous application of maximum continuous power.