THEORETICAL AND APPLIED MECHANICS

TEORIJSKA I PRIMENJENA MEHANIKA  2005 Vol.32 (4), pp.319-340

Summary: 

Nikola Maricic

Software development for subsonic aircraft's unsteady longitudinal
stability derivatives calculation

Subsonic general configuration aircrafts' unsteady longitudinal aerodynamic stability derivatives can be estimated using finite element methodology based on the Doublet Lattice Method (DLM), the Slender Body Theory (SBT) and the Method of Images (MI). Applying this methodology, software DERIV is developed. The obtained results from DERIV are compared to NASTRAN examples HA21A and HA75H. A good agreement is achieved.