Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Paleontologist Contributes to Flying Drone Design Based on Prehistoric Flying Reptile

06.10.2008
A Texas Tech University curator and an aeronautical engineer from the University of Florida have developed a 30-inch robotic spy plane modeled after a 225 million-year-old pterodactyl.

The drone, featuring a strange design of a rudder at the nose of the craft instead of the tail, would gather data from sights, sounds and smells in urban combat zones and transmit information back to a command center.

This concept will be presented on Tuesday (Oct. 7) at the Annual Meeting of the Geological Society of America in Houston.

According to paleontologist Sankar Chatterjee of Texas Tech and Rick Lind of the University of Florida, this project will demonstrate a next-generation capability of sensor emplacement using a pterodactyl as the model animal.

The unmanned, sensor-packed craft in development could soon be demonstrated using existing materials and actuators, the researchers said. Pterodrone, the military’s next generation of airborne drones, won’t just be small and silent – they’ll alter their wing shapes using morphing techniques to squeeze through confined spaces, dive between buildings, zoom under overpasses, land on apartment balconies or sail along the coastline for surveillance.

Pterodactyls lived 228 to 65 million years ago from the late Triassic Period to the end of the Cretaceous Period, Chatterjee said. They dominated the Mesozoic sky, swooping over the heads of dinosaurs. Their sizes ranged from a sparrow to a Cessna plane with a wingspan of 35 feet. Their bodies featured lightweight bones and an intricate system of collagen fibers that added strength and agility to their membranous wings.

“These animals take the best parts of bats and birds,” Chatterjee said. “They had the maneuverability of a bat, but could glide like an albatross. Nothing alive today compares to the performance and agility of these animals. They lived for 160 million years, so they were not stupid animals. The skies were darkened by flocks of them. They were the dominant flying animals of their time.”

Tapejara wellnhoferi, a pterodactyl from Brazil, featured a large, thin rudder-like sail on its head that functioned as a sensory organ. Though as big as a Canada goose, its strange design made it stand out from the Cretaceous crowd when it came to flying. This design showed promise as a model to develop into an unmanned aerospace vehicle called Pterodrone, which has superior agility to perform missions requiring aerial, terrestrial and aquatic locomotion.

Putting the tail at the nose of an airplane would seem like a failed design. However, Chatterjee’s research into Tapejara’s flight showed that the rudder acted similarly to a flight computer in a modern-day aircraft and also helped with the animal’s turning agility.

“Since the discovery of a complete Tapejara in Brazil about 10 years ago, we’ve found they could actually sail on the wind for very long periods as they flew over the oceans,” he said. “They spent most of their time hunting for fish. By raising their wings like sails on a boat, they could use the slightest breeze in the same way a catamaran moves across water. They could take off quickly and fly long distances with little effort.”

Similarly, the drone will sail in the same manner.

Initially, Lind said he had his doubts about creating a drone built with a tail at the nose of the aircraft.

“A vertical tail on the head is a destabilizing influence, so we immediately questioned how Tapejara could survive in that configuration,” Lind said. “The issue of flight control becomes quite relevant as the animal, and thus aircraft, must alter its flight properties to take advantage of the turning capabilities presented by this vertical tail and yet remain stable.”

Chatterjee and Lind used computer simulation models and, based off the complete skeleton of the Tapejara, were able to unlock the secrets of flight from this strangely shaped flying animal.

“Sankar actually contacted me about three years ago after seeing a story on the Discovery Channel on our bird-inspired aircraft to inquire if a pterodactyl-inspired aircraft could also be feasible,” Lind said. “We shared some discussions for a while and then finally got serious this year once we had a common concept and could build upon that foundation.”

Bio-inspiration has led surprisingly to a wide variety of robotic design, especially small Unmanned Aerial Vehicles (UAVs) for urban environment that have taken cues from birds, bats and insects. Compared with a fixed-wing aircraft, a pterodactyl wing is a complicated structure of skin, hair, muscles, tendons, blood vessels and nerve tissue.

A team of students from the University of Florida will begin building the aircraft this fall. Chatterjee and Lind have submitted a joint proposal to The Defense Advanced Research Projects Agency at the Department of Defense, which is currently under review.

CONTACT:
Sankar Chatterjee,
curator of paleontology at the Museum of Texas
Tech and Horn Professor of Geosciences, (806) 742-1986 or
sankar.chatterjee@ttu.edu; Rick Lind, associate professor, Department of Mechanical and Aerospace Engineering, University of Florida, (325) 392-6745 or

ricklind@ufl.edu

John Davis | Newswise Science News
Further information:
http://www.ttu.edu

More articles from Power and Electrical Engineering:

nachricht Multicrystalline Silicon Solar Cell with 21.9 % Efficiency: Fraunhofer ISE Again Holds World Record
20.02.2017 | Fraunhofer-Institut für Solare Energiesysteme ISE

nachricht Six-legged robots faster than nature-inspired gait
17.02.2017 | Ecole Polytechnique Fédérale de Lausanne

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Impacts of mass coral die-off on Indian Ocean reefs revealed

21.02.2017 | Earth Sciences

Novel breast tomosynthesis technique reduces screening recall rate

21.02.2017 | Medical Engineering

Use your Voice – and Smart Homes will “LISTEN”

21.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>