---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Mon 12/04/06: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:12 PM - Diesel (teamgrumman@AOL.COM) ________________________________ Message 1 _____________________________________ Time: 10:12:17 PM PST US Subject: TeamGrumman-List: Diesel From: teamgrumman@AOL.COM I just finished reading an article on the Diamond DA42 Twin Star Standard fuel capacity: 52 gallons TBO: 1000 hrs Climb rate at 104 knots: 800 fpm Cruise Speed @ 80% power @ 10,000 feet: 156 knots TAS on 6.3 gph (each engine) or 12.6 gph. - - - At the current cost for Jet A at Auburn $4.20/gal, that is an hourly cost, for fuel, of: $52.92/hr Cruise Speed @ 60% power @ 10,000 feet: 138 knots TAS on 4.4 gph (each engine) or 8.8 gph. - - - At the current cost for Jet A at Auburn $4.20/gal, that is an hourly cost, for fuel, of: $36.96/hr Cruise Speed @ 50% power @ 10,000 feet: 127 knots TAS on 3.6 gph (each engine) or 7.2 gph. - - - At the current cost for Jet A at Auburn $4.20/gal, that is an hourly cost, for fuel, of: $30.24/hr Useful load (as tested): 985 lbs. (this is the useful load AFTER they get a gross weight increase approved. The actual useful load, on the plane as tested, was Price as tested: $487,212 ----------------- Let's look at my Tiger for a comparison. Standard fuel capacity: 52 gallons TBO: 2000 hrs Climb rate at 104 knots: 1200 fpm Cruise Speed @ 80% power @ 10,000 feet: 152 knots TAS on 13.8 gph. (over redline) - - - At the current cost for Jet A at Auburn $3.85/gal, that is an hourly cost, for fuel, of: $53.13/hr Cruise Speed @ 60% power @ 10,000 feet: 145 knots TAS on 10.3 gph. (2700 rpm) - - - At the current cost for Jet A at Auburn $3.85/gal, that is an hourly cost, for fuel, of: $39.65/hr Cruise Speed @ 50% power @ 10,000 feet: 132 knots TAS on 8.2 gph. (2550 rpm) - - - At the current cost for Jet A at Auburn $3.85/gal, that is an hourly cost, for fuel, of: $31.57/hr Useful load (as tested): 980 lbs. Price as tested: $90,000 ========= So, for roughly 50 to 75 cents per hour operating costs disadvantage, I can fly about roughly the same or better cruise speed. For a "Price as tested" difference: $397,000, I can fly at $50.00/hr (for fuel) for over 7,900 hours. At an average use of 140 hours per year, that's 56 years of flying. True, I don't have a glass cockpit, leather interior, ice protection, or even IFR capable. But, then, who cares? ________________________________________________________________________ across the web, free AOL Mail and more. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message teamgrumman-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/TeamGrumman-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/teamgrumman-list Browse Digests http://www.matronics.com/digest/teamgrumman-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.