From: firstname.lastname@example.org (Limerock) Organization: America Online, Inc. (1-800-827-6364) Date: 02 Dec 94 02:48:59 References: 1
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In article <airliners.1994.1723@ohare.Chicago.COM>, email@example.com (ScottK1204) writes: For any airplane, the optimum engine orientation tends to be a little bit nose up as the thrust generates a small lift increment Tsin(x), where x is the angle of the thrust vector relative to the flight path, which slightly reduces the amount of lift the wing must provide. This reduces the wing's drag. Little forward thrust is lost, roughly T(cost(x)-1). For aft mounted engines, which tend to be above the c.g., the optimum upwards tilt will be less than for wing mounted engines as they generate a downwards pitching moment which must then be trimmed by the tail. Hope this helps!