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Icaro Laminar 13 MRX: Difference between revisions
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→Tuck avoidance
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The pushing-out should still have taken place within phase 1, so that the control must have been actively executed by the pilot and not by the pitching moment of the wing (moment is still negative here). In this rear center of gravity position, the wing continues rotating until the nose is pointing vertically downwards. | The pushing-out should still have taken place within phase 1, so that the control must have been actively executed by the pilot and not by the pitching moment of the wing (moment is still negative here). In this rear center of gravity position, the wing continues rotating until the nose is pointing vertically downwards. | ||
This '''fully-pushed-out position is very beneficial''', as it reduces the negative moment in phase 1 (less excitation) and significantly increases the positive moment in phase 2 (stronger deceleration). In the diagram, the moment changes from the blue to the yellow curve. | This '''fully-pushed-out position is very beneficial''', as it reduces the negative moment in phase 1 (less excitation) and significantly increases the positive moment in phase 2'''a''' (stronger deceleration). In the diagram, the moment changes from the blue to the yellow curve. | ||
As a result of the increased deceleration of the hang glider, the pilot (due to his inertia) is accelerated backwards much more violently relative to the hang glider (compared to the Sensor). This would have inevitably led to a tuck if there wasn't a '''fundamental difference''' to the Sensor and U2: By clutching the control bar extremely tightly, the pilot does not rotate around the hang point (like the Sensor and U2 pilot) but around the control bar! | As a result of the increased deceleration of the hang glider, the pilot (due to his inertia) is accelerated backwards much more violently relative to the hang glider (compared to the Sensor). This would have inevitably led to a tuck if there wasn't a '''fundamental difference''' to the Sensor and U2: By clutching the control bar extremely tightly, the pilot does not rotate around the hang point (like the Sensor and U2 pilot) but around the control bar! | ||
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The fact that '''nuances can make the difference between tuck and recovery''' can also be seen in the Laminar video (''Whip Stall in Laminar14MRX''). Phase 1 corresponds somewhat to that in the U2 diagram, phase 2 to the | The fact that '''nuances can make the difference between tuck and recovery''' can also be seen in the Laminar video (''Whip Stall in Laminar14MRX''). Phase 1 corresponds somewhat to that in the U2 diagram, phase 2 to the Sensor and phase 3 more to the Falcon. For this reason, a separate Laminar diagram has been omitted. | ||
In the initialization phase, the pilot pulls in a little earlier than the U2 pilot (you have to watch the video very carefully). The stall is therefore not yet fully established. Compared to the U2, point 1 and therefore also point 2 are at a slightly lower angle of attack. The extent of phase 2a corresponds approximately to that of the Sensor. | In the initialization phase, the pilot pulls in a little earlier than the U2 pilot (you have to watch the video very carefully). The stall is therefore not yet fully established. Compared to the U2, point 1 and therefore also point 2 are at a slightly lower angle of attack. The extent of phase 2a corresponds approximately to that of the Sensor. | ||