PDF Publication Title:
Text from PDF Page: 097
35 to 40 feet wide. Although it was difficult to maintain the correct liquid water content and droplet size with the HISS system, the tests still provided significant information about the inflight performance of the de-icing system. Perhaps the most important result of the HISS tests related to the durability of the Estane boots. After 6 hours of artificial rain testing behind the tanker, there was no detectable erosion of the Estane6. Erosion testing continued at Fort Rucker, Alabama, where the Estane boots withstood 10 hours of sand erosion. However, 10 hours of flying in natural rain required four sepa- rate blade repairs due to the pitting and chunking of the Estane. By 1987, the conclusion had been reached that the Goodrich boot was a feasible rotor-protection system, but that additional field tests were required to gain more experience with the erosion problem.7 Far more promising than the Goodrich boot as an innovative ice-protection system for both helicopters and fixed-wing aircraft was the Electro-Impulse De-Icing (EIDI) system that occupied a good deal of NASA’s attention during the 1980s. The use of electro-magnetic energy as an impulse force to remove ice had been first suggested in 1937 by Rudolf Goldschmidt, a German national who was living in London. Although Goldschmidt had obtained a patent for his concept, he apparently had never attempted to build a device to test his ideas. The concept had emerged again in the mid-1960s in the Soviet Union. I. I. Levin of the Ministry of Power and Electricity had published a paper on the possibility of employing electro-impulse force to remove frozen and sticky material from bunkers, transformer boxes, and other surfaces.8 The Soviets had installed the system on an Ilyushin IL-18 transport in the 1970s, then sent salesmen to Western nations to market the concept. They had shown a film of a wing with heavy icing. In an instant, the ice had disappeared. Although it had been impossible to tell whether the wing was attached to an airplane in flight or had been pho- tographed in a wind tunnel, viewers had nonetheless been impressed. The Soviets had refused to provide any further details, had referred interested parties to Levin’s article, and had asked for $500,000 to develop the system for any aircraft. The Russians had not gotten their $500,000, but their visit had sparked interest in the system in Western Europe and in the United States. The French had attempted to put an electro-impulse system on an Alpha Jet, but it had not worked well. The British Back in Business 6 “NASA’s Rotorcraft Icing Research Program.” The HISS system is described in the FAA’s Aircraft Icing Handbook, vol. 2, ch. IV. 7 “NASA’s Rotorcraft Icing Research Program.” 8 For the EIDI story, see G. M. Zumwalt, R. L. Schrag, W. E. Bernhart, and R. A. Friedberg, “Electro-Impulse De-Icing: Testing, Analysis and Design,” NACA CR 4175 (September 1988); and Zumwalt to Leary, 30 August 2000. 85PDF 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)