Thrust-induced Effects on a Pitching-up Delta Wing Flow Field

Thrust-induced Effects on a Pitching-up Delta Wing Flow Field
Author: Leon L. Van Dommelen
Publisher:
Total Pages: 30
Release: 1995
Genre: Airplanes
ISBN:

Download Thrust-induced Effects on a Pitching-up Delta Wing Flow Field Book in PDF, Epub and Kindle

Neural network procedures were explored with the objectives to control a delta wing in the non-linear domain. Results show that neural networks are well suited to represent non-linear computed lift and pressure forces on delta wings. A model problem, the flare maneuver, suggests that neural network controllers can perform well for non-linear systems provided that suitable input and training data are provided to it.

Experimental Determination of Damping in Pitch of Swept and Delta Wings at Supersonic Mach Numbers

Experimental Determination of Damping in Pitch of Swept and Delta Wings at Supersonic Mach Numbers
Author: John A. Moore
Publisher:
Total Pages: 28
Release: 1957
Genre: Aerodynamics, Supersonic
ISBN:

Download Experimental Determination of Damping in Pitch of Swept and Delta Wings at Supersonic Mach Numbers Book in PDF, Epub and Kindle

The damping-in-pitch derivative was determined experimentally at Mach numbers of 2.96 and 3.92 for two delta wings having aspect ratios of 2 and 3 and for one sweptback tapered wing having an aspect ratio of 3 by using a free-oscillation technique. The tests were made at Reynolds numbers based on mean aerodynamic chord from 4,000,000 to 12,000,000 for an angle-of-attack range of zero to 10 degrees. The reduced-frequency parameter ranged from 0.006 to 0.022.