UPSETS IN PITCH: A GUIDE TO DESIGN DIVING SPEED?

Authors

  • Frank Irving

Keywords:

Aerodynamics, Design

Abstract

This paper investigates a proposal by Dipl. Ing. Marcel Gaille of the Swiss Bundesamt fur Zivilluftfahrt that the minimum Design Diving Speed in OSTIV Airworthiness Requirements might be defined by considering the maximum speed attained in a reasonable time in a pitching manoeuvre. It is concluded that this suggestion, with a little modification, leads to a formula of the form Vdmin=kVo * DV where k and DV are to be chosen to give generally acceptable results.

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