Navigation Links
Brown University researchers build robotic bat wing
Date:2/21/2013

'Does increasing wing beat frequency improve lift and what's the energetic cost of doing that?'" Bahlman said. "We can directly measure the relationship between these kinematic parameters, aerodynamic forces, and energetics."

Detailed experimental results from the robot will be described in future research papers, but this first paper includes some preliminary results from a few case studies.

One experiment looked at the aerodynamic effects of wing folding. Bats and some birds fold their wings back during the upstroke. Previous research from Brown had found that folding helped the bats save energy, but how folding affected aerodynamic forces wasn't clear. Testing with the robot wing shows that folding is all about lift.

In a flapping animal, positive lift is generated by the downstroke, but some of that lift is undone by the subsequent upstroke, which generates negative lift. By running trials with and without wing folding, the robot showed that folding the wing on the upstroke dramatically decreases that negative lift, increasing net lift by 50 percent.

Data like that will not only give new insights into the mechanics of bat flight, it could aid the design of small flapping aircraft. The research was funded by the U.S. Air Force Office of Scientific Research.

Inspired by the real thing

Bat wings are complex things. They span most of the length of a bat's body, from shoulder to foot. They are supported and moved by two arm bones and five finger-like digits. Over those bones is a super-elastic skin that can stretch up to 400 percent without tearing. The eight-inch robot mimics that anatomy with plastic bones carefully fabricated on a 3-D printer to match proportions of a real bat. The skin is made of a silicone elastomer. The joints are actuated by servo motors that pull on tendon-like cables, which in turn pull on the joints.

The robot doesn't quite match the complexity of a real bat's wing, whic
'/>"/>

Contact: Kevin Stacey
kevin_stacey@brown.edu
401-863-3766
Brown University
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Brown University scientists to discuss resilience of coastal communities at AAAS
2. Carnegies Donald Brown wins Lasker-Koshland Award
3. Are brown widows displacing black widow spiders around southern California homes?
4. Chemical fingerprinting tracks the travels of little brown bats
5. Wayne State University researchers techniques enable more, faster testing of biological liquids
6. University of Arizona Engineering College pursues water technology innovation cluster
7. New Research Conducted by University Cancer Centers Links BP Refinery Incident to Increase Occurrence of Cancer in Texas City
8. University of Florida reports 2012 US shark attacks highest since 2000
9. Rice University lab show how blood vessels regroup after stroke
10. Sustaining Coastal Cities Conference at Northeastern University
11. In a fight to the finish, Saint Louis University research aims knockout punch at hepatitis B
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Brown University researchers build robotic bat wing
(Date:9/22/2014)... could be much more useful in homes, if they ... see the world with cameras and lasers, which have ... are hidden in clutter. A complementary way robots can ... of small ultra-high frequency radio-frequency identification (UHF RFID) tags. ... an RFID-equipped robot to search a room for the ...
(Date:9/22/2014)... 7,000 geoscientists will gather in Vancouver, British Columbia, Canada, ... America,s 126th Annual Meeting & Exposition on 19-22 October ... transportation of crude oil, earthquake prediction problems, and how ... and Tribulations of Life on an Active Subduction Zone, ... , A broad range of topics will be presented ...
(Date:9/21/2014)... Diego, have developed a program that predicts the placement ... based on sequences of DNA. They describe their analysis ... cells in a paper published in Nature Methods ... have the same blueprint, the same DNA, although they ... the report. "Skin cells protect, nerve cells send signals, ...
Breaking Biology News(10 mins):New RFID technology helps robots find household objects 2New RFID technology helps robots find household objects 3Geoscience topics in the spotlight -- Vancouver, BC 2Geoscience topics in the spotlight -- Vancouver, BC 3Geoscience topics in the spotlight -- Vancouver, BC 4Geoscience topics in the spotlight -- Vancouver, BC 5Program predicts placement of chemical tags that control gene activity 2
... Genomics Consortium’s (IGC) Expression Project for Oncology (expO) ... 60 tumor specimens, completing the initial phase of ... dedicated to standardized gene expression data. The clinically ... through the National Center for Biotechnology Information web ...
... Medical Center implanted Artificial Silicon Retina (ASR) microchips in ... caused by retinitis pigmentosa (RP). The implant is a ... inch thick, less than the thickness of a human ... The fifth patient is scheduled for a later date. ...
... in a taste receptor gene influences taste sensitivity of ... preferences and food selection, report a team of researchers ... genes, age and culture also contribute to taste preferences, ... findings may help to explain why some children are ...
Cached Biology News:Expression Project for Oncology (expO) completes first phase of standardized gene expression analyses 2Expression Project for Oncology (expO) completes first phase of standardized gene expression analyses 3Ophthalmologists implant five patients with artificial silicon retina microchip 2Ophthalmologists implant five patients with artificial silicon retina microchip 3Children's taste sensitivity and food choices influenced by taste gene 2Children's taste sensitivity and food choices influenced by taste gene 3
(Date:9/22/2014)... Texas (PRWEB) September 22, 2014 This ... state of the M-Phenylenediamine (mPDA) industry in Global ... the industry, including definitions, applications and industry chain structure. ... provided with a focus on history, developments, trends and ... international and Chinese situation is also offered. , The ...
(Date:9/22/2014)... 22, 2014 Research and Markets ... Chinese Microcrystalline Cellulose Industry Report 2014" report to ... Microcrystalline Cellulose Industry Report 2014 is a professional and ... microcrystalline cellulose industry with a focus on the Chinese ... of the industry including definitions, classifications, applications and industry ...
(Date:9/22/2014)... 2014  WIRB-Copernicus Group (WCG), the world,s largest ... clinical research, announced today that its Western Institutional ... by the Association for the Accreditation of Human ... safeguards for clinical research participants. WCG ... Ph.D., commented, "It is of utmost importance to ...
(Date:9/21/2014)... Switzerland have succeeded in observing the "forbidden" infrared ... time. These extremely weak spectra offer perspectives for ... also contribute to the development of molecular clocks ... the scientific journal Nature Physics . , ... and light, is probably the most important method ...
Breaking Biology Technology:m-Phenylenediamine Industry: mPDA Global & China Trend Analysis Now Available at ReportsnReports.com 2m-Phenylenediamine Industry: mPDA Global & China Trend Analysis Now Available at ReportsnReports.com 3Global and Chinese Microcrystalline Cellulose Industry Report 2014 2Western IRB (WIRB) Awarded AAHRPP Reaccreditation 2Uncovering the forbidden side of molecules 2
... China, Nov. 9, 2010 /PRNewswire-Asia-FirstCall/ -- ... ... if (typeof(lpUnit)==,undefined,) var lpUnit=,PRN,; --> ... = function(data) { var s = ,; var first_result; // Results are keyed by longUrl, so we need ...
... With Pfizer -- CHARLOTTESVILLE, Virginia, November 9, 2010 ... ... if (typeof(lpUnit)==,undefined,) var lpUnit=,PRN,; --> ... var s = ,; var first_result; // Results are keyed by longUrl, so we need to grab the first ...
... Nov. 9, 2010 Verenium Corporation (Nasdaq: ... of high-performance industrial enzyme solutions, today announced that Janet ... the upcoming Jefferies 10th Global Clean Technology Conference.  The ... on Tuesday, November 16, 2010 and will take place ...
Cached Biology Technology:China Biologic Products Schedules Conference Call to Discuss Third Quarter 2010 Results 2China Biologic Products Schedules Conference Call to Discuss Third Quarter 2010 Results 3China Biologic Products Schedules Conference Call to Discuss Third Quarter 2010 Results 4China Biologic Products Schedules Conference Call to Discuss Third Quarter 2010 Results 5China Biologic Products Schedules Conference Call to Discuss Third Quarter 2010 Results 6China Biologic Products Schedules Conference Call to Discuss Third Quarter 2010 Results 7China Biologic Products Schedules Conference Call to Discuss Third Quarter 2010 Results 8Biovista Announces a Drug Repositioning Collaboration With Pfizer 2Biovista Announces a Drug Repositioning Collaboration With Pfizer 3Biovista Announces a Drug Repositioning Collaboration With Pfizer 4Biovista Announces a Drug Repositioning Collaboration With Pfizer 5Biovista Announces a Drug Repositioning Collaboration With Pfizer 6Biovista Announces a Drug Repositioning Collaboration With Pfizer 7Biovista Announces a Drug Repositioning Collaboration With Pfizer 8Verenium to Present at Jefferies 10th Global Clean Technology Conference 2Verenium to Present at Jefferies 10th Global Clean Technology Conference 3
...
Denhardt's powder mixture (for 50X stock solution)...
... SYBR Green Mixes are optimised for SYBR Green ... to perform Quantitative PCR, with the exception of ... Mix contains optimal levels of active SYBR Green ... a proprietary reaction buffer that enables detection of ...
... Roto-Shake Genie is an all-in-one rotator/rocker ... performs five different mixing motions: ... as well as a combination of ... moving portion of the Vibraotme Roto-Shake ...
Biology Products: