The following pictures provide a history of some of isogrid
structures designed with the aid of ISOGRID-SST. The pictures illustrate the
extensive structures development capabilities of PS Associates.
The cover page of the April 1973 issue of Machine Design containing
the article "The Isogrid King of the Lightweight Design".
A typical machined flanged isogrid node.
Local view of flanged isogrid.
A machined in the flat and formed panel.
An isogrid launch vehicle cylindrical stub adapter an
assembly of formed panels.
A launch vehicle conical payload adapter based on the PS
Associates patented exponential spiral isogrid which optimizes
structural performance in conical isogrid structures.
Part of a large 2.5 inch thick isogrid Fermilab vacuum vessel This
structure was a PS Associates break through in 1994 when it was
the first time such a high performance structure was produced.
Access hole in Fermilab vacuum vessel.
Titan III adapters designed with the aid of SST. These PS
Associates innovative isogrid structures produced considerable
weight savings and performance improvement over competing skin stringer
designs.
Titan IV open isogrid structure with circumferential ribs. This is a
unique structure proposed by PS Associates and designed with the
aid of SST. The structure maximizes both compliance and load carrying
capability between the upper and lower circumferential bolted flanges.
A Captor-Pram demonstration case produced by machining
and brake and explosive forming. The result is a precision 24 inch
diameter case.
Titanium XG40 Rolls Royce fighter aircraft engine by-pass duct. This
is a conical structure incorporating PS Associates proprietary
technology. It includes numerous cutouts and mounting provisions which
are uniquely integrated, with the aid of SST, into the exponential
isogrid pattern. This highly efficient flanged isogrid structure
significantly outperforms competing chemically milled and composite
structures.
A scaled model of a commercial aircraft engine experimental
containment case designed for Rolls Royce by PS Associates. The
blade out penetration of the case was successfully absorbed by the
structure without loss of required minimum residual integrity.
This PHALANX gun cradle is comprised of 3 and 4 inch
thick flanged isogrid plates. The structure is significantly lighter and
cheaper to produce than competing honeycomb and sandwich structures.
ALISS vacuum vessel cylindrical and conical structures. With the aid
of SST, PS Associates designed these isogrid and integrated ring
structures
Part of the ALISS cryogenic vacuum vessel structures.
