Further Investigations of Icing Effects on an Advanced High-Lift Multi-ElementAirfoil

摘要

In 1993 an experimental effort was initiated to investigate the effect of iceaccretions on an advanced high-lift, multi-element airfoil. This airfoil is representative of an advanced transport wing, and has a state-of-the-art three element high lift system. This experimental effort is part of a cooperative program between McDonnell Douglas Aerospace and the NASA Lewis Research Center. The goal of this program is to improve the current understanding of ice accretion characteristics on multi-element airfoils. One key objective of this program is to establish an experimental database of multi-element ice accretions using the NASA-Lewis Icing Research Tunnel (IRT). The first multi-element icing test in this cooperative effort was conducted in 1993. A second 'follow on' icing test was conducted in 1994, for the purpose of augmenting the multi-element ice accretion database obtained in 1993, and also for studying the effect of flap gap setting on ice accretions. This paper presents selected results from the 1994 multi-element icing test, and will emphasize the effect of angle-of-attack, and flap gap setting on multi-element ice accretions.