"Well Designed"? Pterosaur Correlation to Russian SU-37 BERKUTby Cliff Paiva, M.S.
"The flight dynamics sections confirms that the pterosaur is an exceedingly effective aerodynamic drag-reduced system, using forward swept wing technologies.
Maximum lift forces occur in the midsection of the animal’s wing surface area. Camber is correlated, along with the swept wing technology, to the Russian SU-37/47 (NATO Designation: BERKUT) all aspect, all weather advanced, stealth fighter.
The SU37/47 Russian fighter also utilizes extremely highly maneuverable flight control surfaces which is in direct correlation to the pterosaur’s pteroid section, extended camber forward flap and the aft variable wing-leg sections.
Both “fighters” function in 6 degrees-of-freedom (6-DOF) turning in any axis (x,y,z) and any angle (ρ,θ,φ) simultaneously. Each leg is capable of independent adjustment in direct correlation to the SU-37/47’s rear, independent horizontal stabilization system.
When used in conjunction with the pteroid-camber section the pterosaur is capable of severe angles-of-attack on approach-to-target and in mid-flight operations. Like the SU-37/47 Russian system, and the American F-22 Advanced Stealth Fighter, the pterosaur is then fully capable of applying totally independent, variable control surfaces.
Also the head crest is the animal’s advanced rudder-optics section and, like the rest of this advanced “bird-of-prey”, operates independently or in coupled fashion, as the mission requires, with the rest of the sophisticated control surfaces distributed throughout the advanced engineered system.
|Lift Force Assessment as a function of velocity.|
A pterosaur in level flight (or power dive) is able to displace an order of magnitude its own weight. A log-log curve was generated by Olin College engineers to assess displacement characteristics.
Lift force is a function of 1/2 p v 2 CLa. Power dives would generate significantly increased velocities which may account for observations of the animal’s ability to carry in excess of one hundred pounds.
Nominal and maximum lift forces are conservative approximations.
This pterosaur wing surface membrane is designed to provide maximum displacement with the use of aero-fibrils.
This design implementation is similar to current manufactured modern sail-making methodologies Stanford University's dynamic similitude project made it clear that the aero (actino) fibrils significantly altered the tension and directional stiffness of the membrane in flight.
Along with the pteroid bone it is suggested that aero-fibrils have a important function in camber (forward flap) control.