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MountainHawkEagle80-2 : 6 th Flight Test of Gliding at Seaside
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MountainHawkEagle80-2 : 7 th Flight Test & Gliding at Seaside
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forward sweep of wing---slightly thrust UP by slow flapping?
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MountainHawkEagle80-2 : 8 th Flight Test & Loiter at Seaside
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good observation, flapping is produces more thrust by more airstream while forward swept can grasp more of it, but with faster flapping drag seems to increase along with thrust by a little.
i am not sure but maybe a more inwards angle of articulation can help make the flapping more efficient there if vortices by upstroke are causing drag than thrust or lift, because the forward swept is like outward articulation angle regarding to leading edge, from which some vortices might direct sideways? |
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Flight and Gliding with New Gear at Seaside
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NightFury 23iV : Flight at Seaside by Y.S.
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DeadlyNadder41iV : Good Flight at Seaside
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Pteranodon32iV Sports Type Pterosaur Ornithopter:Powerful Flight at Seaside
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Quote:
1 ) A muscle to swing down a wing is strong 2) A muscle to raise a wing is weak When wings swing down , wings lengthen straight and make a thrust. When it raise a wing, it fold a wing. I thought Pterosauria to be have taken a similar action. There was a good flight efficiency by doing it. And I thought that ornithopter flew like Pterosauria by this action. However, ornithopter cannot fold wings backward when it raise wings. A wing of Pteranodon 32 basically does not turn like a bird type ornithopter greatly at a joint location. When wing of Pteranodon32 swing down , wings are straight. When it raised wings, wings became the form that 凸 bent on the top and flapped in good form. Sordes66 and Chaoyangopterus8-10, Pteranodon 9-9 have a straight wing(Straight carbon rod wing) without Articulation. However, a flapping of this ornithopter(Sordes66) is like as flap of insect. Sordes66LegControl
Chaoyangopterus8-10 Sports type Pteartosaur Ornithopter
Pteranodon 9-9
Sinopterus67LegControl can bend wings at mid wing.
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Last edited by Kazu-kaku; Aug 18, 2020 at 10:00 PM.
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articulating a wing forward backward would only be a sort of passive articulation, that a wing membrane becomes a bit loose on upstroke, thus either easing upstroke either directing thrust more directly forward. it is correct to mention that this less effective flapping style have as consequence a necesarily faster flapping like insects. in pterosaurs elbow could instead be responsible for wave-accelerating by up-down motion.
but this is only to my basic knowledge , i haven't read or seen any scientific paper or evidence on this matter. an animation / sketch / kinetic sculpture of this movement is necessary in order to think about an airworthy mechanism. |
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Last edited by Dantiel; Aug 18, 2020 at 08:50 PM.
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"I thought Pterosauria to be have taken a similar action."
In general,, somewhat similar. But their wrists articulate 90° orthogonal to bird wrists. The pterosaur wrist cannot flex up or down at any point during the flightstroke. Think of birds as flying palm down and pterosaurs as flying palm forward. |
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COMMENTS INSERTED IN ALL CAPS.
articulating a wing forward backward would only be a sort of passive articulation, HOWEVER, PTEROSAURS HAD VERY POWERFUL MUSCLES DEDICATED TO ACTIVELY POWERING THE FORE/AFT ARTICULATIONS. that a wing membrane becomes a bit loose on upstroke, NOT IN PTEROSAURS, DUE TO ACTINOFIBRIL ORIENTATION AND MANIPULATION, AND TO PTEROID MANIPULATION. thus either easing upstroke either directing thrust more directly forward. it is correct to mention that this less effective flapping style have as consequence a necesarily faster flapping like insects. NOT AT ALL. QUETZALCOATLUS northropi WITH 10 METER SPAN FLAPPED AT ABOUT 0.9 TO 1.1Hz. QUETZALCOATLUS species WITH 4.8 METER SPAN FLAPPED AT ABOUT 1.7Hz. A 1.22 METER SPAN QUETZ WOULD FLAP AT ABOUT 4.1Hz. in pterosaurs elbow could instead be responsible for wave-accelerating by up-down motion. PTEROSAUR ELBOWS DON'T ARTICULATE UP AND DOWN. but this is only to my basic knowledge , i haven't read or seen any scientific paper or evidence on this matter. I KEEP A QUETZ LEFT WING AND SCAPULOCORACOID HERE AT THE HOUSE. IT PROVIDES PRETTY GOOD EVIDENCE OF THE ARTICULATIONS. an animation / sketch / kinetic sculpture of this movement is necessary in order to think about an airworthy mechanism. THERE ARE NO GOOD ONES IN EXISTANCE. SORRY. FOR THE MOMENT, STUCK WITH EXAMINING THE REAL THING. |
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