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When will a diesel be available for my aircraft? |
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News, facts, and comments on the coming revolution for piston-engine aircraft.
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News of December 12, 2011We have found the breakthrough in diesel concepts. It burns at most 110 grams (0.26 Lbs.) of fuel per HP-hour.On September 15, we asked in DieselAir the question: “If a 5,000 HP diesel engine can burn no more than 0.22 Lbs of fuel per HP-h, while weighing no more than 0.18 kg per HP dry, it will trigger new concepts for air travel and cargo in 2050.” See http://www.dieselair.com/2011/09/fanjet-airplane-will-never-be-effective.html We received lots of answers, and we thank our subscribers for their help. And yes, we did identify an R&D firm proposing an innovative concept. It promises, on well founded grounds, for an engine of 5,000HP, a Specific Fuel Consumption (SFC) between 100 and 110 grams/HP-h and a weight of less than 1 metric tonne (2,200 Lbs.). The inventor and his advisers have an impressive engineering background in internal combustion technology. These figures are demonstrated with a computer model applying accepted laws of mechanics, thermodynamics, heat generation from Jetfuel as is available, heat conductivity & transfer, friction & lubrication, etc., to a totally innovative concept. This concept, however, can be applied to manufacturing an engine using conventional available metals and alloys, assembled with parts which are cast, machined and eventually heat-treated using conventional, inexpensive technology. There is no need, for these parts, of ceramics, or cermets, or composites and other materials which are inherently costly to manufacture. The power of 5,000 HP was chosen because it fits with a large market of 4-engined commuters and of air cargos. However this concept has also been simulated for powers of 2,500; 550; and 275 HP. SFC doesn’t change. Weight per HP gets of course higher for smaller engines. Nevertheless, around 250-300 HP, the weight per power ratio is much more favorable than for any opposite cylinder gasoline engine such as O-470, 520, 540 or 550. The stockholders of the firm which developed the concept tell us that, because of pending no-shopping agreements, they are bound to keep a low profile now but will be free to make a public announcement by January 1st, 2012.They agreed to give then DieselAir an exclusivity for this scoop. Meanwhile anyone wishing an early, private disclosure is invited to inform them by email to bgrierson@preternatural.net. So stay tuned, and in the mean time, prepare to enjoy Christmas and the season’s holidays! Andre Teissier-duCros posted at 12:58 PM |
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