Description / Abstract:
Introduction
Research is now underway in many organizations in Europe, Asia,
and North America to better understand the effects of inflight
atmospheric icing and to identify ways to better protect aircraft
from the icing threat. There have been many periods of icing
research during the decades since aircraft first encountered icing
conditions, but there have also been some lulls in that activity.
These lulls are now a thing of the past as the staffs of research
centers, universities, and industry conduct research in response to
the requirements of the aircraft industry throughout the world. The
goal is to maintain flight safety in all-weather conditions.
Proposed changes in the regulations for operation in icing
conditions are sure to keep icing research and development at this
high level. This is especially true for the effects of ice crystals
in the atmosphere, and for the threat associated with supercooled
large drop (SLD) icing.
There were fifteen inflight icing presentations during the past
four AeroTech Congresses and ten of these presentations were
documented in written technical papers. A large number of inflight
icing papers were presented at the SAE 2011 International
Conference on Aircraft and Engine Icing and Ground Deicing, held in
Chicago and organized by SAE International. This conference
attracted a large number of papers with parallel sessions required
to accommodate the number of quality papers offered. There were 75
inflight icing presentations out of a total of 108 icing
presentations. The inflight icing papers included presentations on
advances in icing certification, ice protection, the effects of ice
crystals in the atmosphere, and the effects of large drop icing
(including freezing drizzle and freezing rain). Of the 75 inflight
icing presentations, 59 had written papers.
The 69 papers from the recent conferences, 10 in the last four
AeroTech meetings, and 59 in the SAE 2011 International Conference
on Aircraft and Engine Icing and Ground Deicing, had significant
international content, as shown in Table 1.
A number of organizations contributed papers to these recent SAE
conferences, with some papers authored by individuals representing
more than one organization. Table 2 identifies the organizations
contributing more than two papers.
The popular four-year cycle of international icing conferences
offered many in the icing field the opportunity to present the
results of their icing work conducted during the previous four
years.1 The pace of icing research and development has
not slowed and AC-9C and others in the icing technical community
determined that there is sufficient new work to justify yet another
conference.
SAE decided to offer a wider distribution for the best of the
papers from recent conferences, with emphasis on those with the
greatest interest to the aviation community. The result is a
collection of ten papers that best represent subjects of interest
to the icing community and other interested parties.
1 There have also been other icing conferences dealing primarily
with operational issues for flight in icing conditions.