0
Your cart

Your cart is empty

Browse All Departments
  • All Departments
Price
  • R250 - R500 (1)
  • -
Status
Brand

Showing 1 - 1 of 1 matches in All Departments

Flutter and Divergence Analysis Using the Generalized Aeroelastic Analysis Method (Paperback): Nasa Technical Reports Server... Flutter and Divergence Analysis Using the Generalized Aeroelastic Analysis Method (Paperback)
Nasa Technical Reports Server (Ntrs); John W. Edwards, Carol D. Wieseman
R370 Discovery Miles 3 700 Ships in 18 - 22 working days

The Generalized Aeroelastic Analysis Method (GAAM) is applied to the analysis of three well-studied checkcases: restrained and unrestrained airfoil models, and a wing model. An eigenvalue iteration procedure is used for converging upon roots of the complex stability matrix. For the airfoil models, exact root loci are given which clearly illustrate the nature of the flutter and divergence instabilities. The singularities involved are enumerated, including an additional pole at the origin for the unrestrained airfoil case and the emergence of an additional pole on the positive real axis at the divergence speed for the restrained airfoil case. Inconsistencies and differences among published aeroelastic root loci and the new, exact results are discussed and resolved. The generalization of a Doublet Lattice Method computer code is described and the code is applied to the calculation of root loci for the wing model for incompressible and for subsonic flow conditions. The error introduced in the reduction of the singular integral equation underlying the unsteady lifting surface theory to a linear algebraic equation is discussed. Acknowledging this inherent error, the solutions of the algebraic equation by GAAM are termed 'exact.' The singularities of the problem are discussed and exponential series approximations used in the evaluation of the kernel function shown to introduce a dense collection of poles and zeroes on the negative real axis. Again, inconsistencies and differences among published aeroelastic root loci and the new 'exact' results are discussed and resolved. In all cases, aeroelastic flutter and divergence speeds and frequencies are in good agreement with published results. The GAAM solution procedure allows complete control over Mach number, velocity, density, and complex frequency.

Free Delivery
Pinterest Twitter Facebook Google+
You may like...
Dig & Discover: Ancient Egypt - Excavate…
Hinkler Pty Ltd Kit R253 Discovery Miles 2 530
Bestway E-Z-Broom Pole (360cm x 30mm)
R359 R250 Discovery Miles 2 500
Fantastic Beasts 3 - The Secrets Of…
Eddie Redmayne, Jude Law, … Blu-ray disc  (1)
R346 Discovery Miles 3 460
Tesa Basic Masking Tape (35m x 25mm)
R79 Discovery Miles 790
Let's Rock
The Black Keys CD R229 Discovery Miles 2 290
Ultra Link UL-TMT2160 Flat TV Mount Wall…
R199 R167 Discovery Miles 1 670
380GSM Golf Towel (30x50cm)(3…
R179 Discovery Miles 1 790
3 Ply Disposable Face Mask (Pack of 50)
R72 Discovery Miles 720
Loot
Nadine Gordimer Paperback  (2)
R367 R340 Discovery Miles 3 400
Did You Know That There's A Tunnel Under…
Lana Del Rey CD R447 Discovery Miles 4 470

 

Partners