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E H Drucker > > First, you are absolutely right about the range. If you are flying > alone or with just one passenger, even if you take along over 200 lbs of > "stuff", you can fill the tanks and stretch the range to well over 800 > nm with IFR reserves. Be sure to bring a relief bottle, cause you are > going to be at it a while (almost 7 hours). This is based on 135 kts, > 65% cruise/9.1 gph. Thats what we get in our Arrow at economy (peak > EGT) mixture setting and around 10,000 ft. I have no experience in > Turbo Arrows, but if you go that route your range will be a lot less. > The turbo engine is much thirstier. In fact, if most of your trips are > in the 600-700 nm range, the normally aspirated version may actually be > effectively faster because you will often be able to skip a fuel stop. > the difference in range is not as much as you might expect. using your numbers (9.1gph @ 135kts), and allowing for a 45 minute reserve off of 72 gallons, i get a range of 966.9 nm. in my turbo arrow at 10k i get 150 kts @ 10.1 gph. with a 45 minute reserve, that gives 956.8 nm range, only 10.1 nm less. we did it on the same fuel, but it took you 7.16 hours, and it only took me 6.38 hours, or 47 minutes less. so the birds are closer in range than you indicated. mho, gross_arrow |
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