virgo20
28.05.2021 21:51:51
As you can see, fuel efficiency figures vary greatly, and for good reason. Unlike a car, a plane's burn rate is dependent upon a number of factors, including: here
See full version: Most fuel efficent long range business jet
As you can see, fuel efficiency figures vary greatly, and for good reason. Unlike a car, a plane's burn rate is dependent upon a number of factors, including: here
If you plan to buy a plane, you should know that fuel will be the biggest variable cost. Fuel costs will account for as much as 70 percent of your variable operational costs. We discuss the costs of ownership, with a breakdown of fixed and variable costs including the fuel costs, in the following articles:
Table showing approximate fuel burn range by class of aircraft: more
Other reports average the numbers out. When averages are stated, it is important to remember that the first hour fuel usage will be significantly higher. Also be aware that, since larger planes have a longer range, their average will be measured over longer flights than that of a smaller craft. Even then we've seen different people calculate the average differently - there are just so many variables. When aircraft manufacturers quote fuel burn numbers they will nearly always show the assumptions that they make eg 6 occupants @ 200 lb (91 kg) each, Long Range Cruise speed, ISA en-route, NBAA IFR reserves with 100 nm alternate, takeoff @ Sea Level. [links]
Note that the figures are given in terms of both gallons per hour and pounds per hour. When researching an aircraft, you may find both statistics, or you may just find one. Typically, the pilot of an aircraft will think in terms of pounds per hour (pph) since the overall weight of the aircraft, including fuel, passengers, cargo, etc. is a key factor in any flight plan. Passengers or owners, on the other hand, tend to think in terms of gallons since this is how fuel is priced. Passengers are also influenced by car performance, again measured in gallons. Note the relationship between gallons and pounds varies depending on the type of fuel and also depending on the temperature and pressure conditions. For the chart below we've used a fuel density of 6.7 lb per US gallon (= 0.803 kg/l). more
The new Boeing 777X will be the world’s largest and most efficient twin-engine jet, unmatched in every aspect of performance. With new breakthroughs in aerodynamics and engines, the 777X will deliver 10 percent lower fuel use and emissions and 10 percent lower operating costs than the competition. A true family, the 777X offers low-risk, profitable growth, industry-leading reliability and seamless integration with the 777 and 787 Dreamliner families for even more flexibility. But performance is just part of the story. With a spacious, wide cabin, new custom architecture and innovations from the 787 Dreamliner, the 777X will deliver the flight experience of the future. here
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An unprecedented combination of power, performance and dependability, the PW800 engine sets new standards in aircraft performance and fuel efficiency in the long-range business jet market.
The PW800 engine shares the same proven core technology used in the award-winning Pratt & Whitney GTF™ engine for commercial aircraft. With its proven core technology, best-in-class availability and comprehensive service plan, the PW800 has been designed with the customer in mind, with features that facilitate access and maintenance. In total, the advanced PW800 common core technology is leveraged in 16 different engine applications.
here
Then there’s the Nextant 400XTi, perhaps the ultimate in an upgrade. It is a remanufactured Beechcraft 400A/XP. It will be powered by the FJ44-3AP, a power plant Williams claims is 32 percent more fuel efficient than its predecessors. The Williams FJ44-3AP engines have performed well in tests, indicating maintenance costs 27 percent less than for the engines it replaces, and 5,000 hours between overhauls. It will also produce 32-percent fewer greenhouse gases than previous generation engines, claims Nextant.
The smallest business aircraft with coast-to-coast range and real jet speed here
Fred George
Business & Commercial Aviation, October 2012