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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.News of April 01, 2007What will be operating costs with diesel?A question from reader: Thanks for all of the great information you provide on this site. I am particularly interested in any operating cost information you might have regarding the Centurion 4.0. I realize it is not FAA certified yet but I d be interested in hearing any operating cost projections for the 4.0 or even about Centurion 1.7 operating costs as a proxy. Thanks again! Answer: No data is available yet on proven operating costs. You can however simulate them quite easily using what is known of conversion costs as a capital expenditure, and fuel consumption based on a specific consumption of 0.32 Lbs/HP-hour. Also remember that your cost/Lb. of cargo-NM is affected by two facts: If you fly with full fuel, Jetfuel being more dense by about 10%, you fly much longer but with a slightly reduced payload, If you fly with partial fuel, with the fuel needed for the leg, you fly same legs but your payload is increased. Also take into account that your useful range with reserves is affected positively because, in case of end of flight emergency such as ceiling under minimals at both destination and alternate, you can fly at maximal economy. This with diesel generally means 1.6G/h per 100 HP of nominal power. Therefore you need, say, for reserves of one hour, much less reserves in Gallons than expected with a gasoline engine. This means that you can fly missions you could not address with an Avgaz plane, which drastically increases the revenue/year your plane can generate. posted at 11:37 AM |
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