Unveiling modal parameters with forced response using SVD and QR during flutter flight testing

Vibration and Flutter Flight Testing

A mvkrr is made of the techniqws that have been developed or are being developed in the United Kilngdon for flight vibration testing and flight flutter testing aircraft. This includes a description of the instnznentation used for recotiing the Vibratioml response, and a comparative assessment of the vaious methods used for exciting the aircraft in i'lipht flutter tests.

Flutter and Forced Response of MistunedTurbomachineryM

This report reviews the mathematical analysis of mistuned aeroelasticity in turbomachines, avoiding excessive mathematical complexity, and putting the emphasis on the physical interpretation of the mathematics. The aeroe-lastic behaviour can be analysed either by considering the motion of individual blades or by considering a sum of travelling wave modes. The modal viewpoint is shown to be most...

A Historical Overview of Flight Flutter Testing

Dose-response slope of forced oscillation and forced expiratory parameters in bronchial challenge testing.

In population studies, the provocative dose (PD) of bronchoconstrictor causing a significant decrement in lung function cannot be calculated for most subjects. Dose-response curves for carbachol were examined to determine whether this relationship can be summarized by means of a continuous index likely to be calculable for all subjects, namely the two-point dose response slope (DRS) of mean res...

Out-of-Core SVD and QR Decompositions

out-of-core singular-value-decomposition algorithm. The algorithm is designed for tall narrow matrices that are too large to fit in main memory and are stored on disks. We have implemented the algorithm and combined it with a larger eigensolver code to obtain the electronic states of a semiconductor nanocrystal. The computationalchemistry application requires finding an orthonormal basis for a ...