Description / Abstract:
A landing gear system comprises the most compelling assembly of
engineering skills. Its importance to the successful design of an
aircraft can be favorably compared with that of the aircraft's
wings and engines. A landing gear system consists of several
different engineering disciplines, and is continually in the public
eye especially with regard to safety.
The primary objective of AIR 4846 is to present a record of a
variety of interesting gears, gear/aircraft systems and patents,
and to discuss wherever possible the lessons learned, and the
reasons of the design. This the document is not only a historical
account, but a means of recording technical knowledge for the
practical benefit of future landing gear designers.
Commendable efforts have been made over the years by several
individuals to make such recordings, and AIR4846 will make
continual reference to them. This applies to all books, papers, or
specifications that have the approval of the SAE A-5 Committee.
AIR 4846 also accepts the premise that an essential aircraft
requirement can often justify a gears' complexity and consequent
weight. However, the document's purpose is not to recommend, but to
provide reliable, authenticated information. Hence, the gear
designer would be better equipped to adjudicate trade studies
rationally, while not restricting his/her innovative skills.
Each gear design feature will be associated with as many
aircraft examples as possible, and every effort will be made to
ensure accuracy, authenticity, and detail clarity.
Section 2 of this document describes the features of landing
gear which are addressed in the specific descriptions of various
landing gears (Category A). Also, special types of landing gear are
categorized as Category B.