PDF Publication Title:
Text from PDF Page: 101
and Harold Reisen of Beech. It did not take long to put together a proposal for $70,000 to study and design an EIDI system that would be installed on a Cessna wing and a Beech wing of similar size with different leading edge stiffness and shape. The wings would be tested in the IRT within six months. This proposal was submitted to NASA in mid-February 1982 and was promptly approved. The contract specified that testing would begin no later than October 1982. Zumwalt quickly put together his interdisciplinary EIDI team. For the electro- dynamics, he recruited Robert L. Schrag, professor of electrical engineering at Wichita State. Next, for the structural dynamics, he signed on Walter D. Bernhart, WSU pro- fessor of aerospace engineering. Zumwalt then made a quick trip to Cleveland to learn about the IRT. While there, he was informed that Simmons-Precision, an aircraft elec- trical system manufacturer, had shown an interest an EIDI. He contacted the company and invited them to furnish the power supply for the system. After a visit to Wichita, two engineers from Simmons-Precision agreed to join the WSU team. Zumwalt adopted the basic EIDI system that had first been tested in the 1970s. It consisted of flat-wound coils of copper ribbon wire that were placed just inside the leading edge of the wing’s skin, with a small gap between the skin and the coil. The coils were then connected to a high-voltage capacitor bank. Energy was discharged through the coil by a remote signal to a solid-state switch, a “silicon-controlled rectifier” (SCR). The discharge created a rapidly forming and collapsing electro-magnetic field that induced eddy currents in the metal skin. The result was the creation of a repulsive force of several hundred pounds for a fraction of a millisecond. This force shattered, debonded, and expelled the ice—instantaneously. Zumwalt had “a clever graduate student,” Robert A. Friedberg, fab- ricate the copper coils and mount them on the Cessna and Beech wing sections. On the weekend of 23–24 October 1982, Friedberg drove the models from Wichita to Cleveland in a rental truck, while Zumwalt, Schrag, Bernhart, and repre- sentatives from Cessna and Beech flew to the Lewis laboratory for the tests. Monday morning, 25 October, the WSU-led team met with the staff of the icing section. “We were patronized,” Zumwalt recalled. “If all of the so highly regarded organizations have failed to make EIDI work,” they let Zumwalt know, “we will understand if little Wichita State and two dinky light airplane companies fail.” Only Schmidt and Reinmann remained optimistic. Tests of the Cessna 206 wing section began on Monday evening. EIDI performed flawlessly. The wing was successfully de-iced through a range of speeds, temperatures, angles of attack, and droplet sizes. Schmidt was ecstatic. He invited Reinmann to view the next night’s tests. Again, on Tuesday evening, EIDI worked its magic. Reinmann, Zumwalt remembered, “was jumping up and down saying ‘Just like those Russian movies . . . Just like those Russian movies!’” Back in Business 89PDF Image | History of NASA Icing Research Tunnel
PDF Search Title:
History of NASA Icing Research TunnelOriginal File Name Searched:
sp4226.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)