PurposeThe purpose of this paper is to optimize the downrange for hypersonic
boost‐glide (HBG) missile under near‐real condition, and to validate the
suitability of proposed wall cooling materials.Design/methodology/approachThe
trajectory optimization problem is characterized by a boost phase followed by a
glide phase. A multi‐phase trajectory optimization tool is adopted to optimize
the downrange... hiện toàn bộ
The mechanism of stress formation in glass under‐going conditions of rapid
cooling, and the factors affecting the properties of the toughened glass
produced are discussed. The application of techniques for measuring the
temperature of glass, to the control and study of the toughening process are
described.
PurposeThe purpose of this paper is to apply a factorization‐based control
system design procedure to design of auto‐pilot
systems.Design/methodology/approachThe design approach is based on a previously
developed factorization‐based control system design procedure. The design
approach requires a stable coprime factorization of the plant, a set of stable
coprime factors that are solutions to the Be... hiện toàn bộ
Under this heading are published regularly abstracts of all Reports and
Memoranda of the Aeronautical Research Committee, Reports and Technical Notes of
the U.S. National Advisory Committee for Aeronautics, and publications of other
similar research bodies as issued
THE experience gained with the previous models of the “Bluebird” type has
enabled the Bluebird IV to be produced embodying all the requirements essential
in a light aeroplane for private and club flying. This experience indicated that
the policy of side‐by‐side seating in preference to the more usual tandem
arrangement was fully justified, and, although previously it had been considered
that such ... hiện toàn bộ
THIN cylindrical shells stiffened at intervals along their length by internal
frames or bulkheads are often used in fuselage design. When such shells are
pressurized or heated, expansion of the shell results and, unless the subsequent
deformations of shell and stiffeners are equal, discontinuity stresses are
induced in the region of the shell‐stiffener joint making all the deformations
compatible.