It is very important to note that all
STI wings are custom designed and manufactured for each
individual order. We must stress that the racing
sanction or governing racing body that you race under
has its own rules, regulations, and specifications
concerning all types of wing construction allowed.
STI master wing design is based on a modified Geottingen
387 airfoil that is inverted, and has various belly
depth configurations, lengths, and widths to meet the
individual racer (boat) needs within the perimeters of
the governing racing body or sanction.
STI racing wings are precision designed and manufactured
with a combination of cad/cam/aerodynamics analysis
computer programs and cnc equipment, what does that
really mean to you? It simply means that each wing
concept is completely engineered*, modeled, and then
tested through two special analysis programs for airflow
co-efficiencies of drag, downforce, and "static"
friction. These two systems also run virtual reality
structual failure and stress fatigue tests as well.
From this point, after the "prototype" design has proven
itself in all perimeters of its design, its "ribs" are
then precision machined on STIs own AC-2V-3 Accu II cnc
vertical milling machine center using a Centroid M400S cnc system, each "rib" is "mirrored" (copied) within
0.0001" consistency, "rib" after "rib" until the amount
required for that individual wing is complete.
STI machines each "rib" from 1.50" thick 6061-T6 alloy
into a specially designed "6D" part that not only gives
the wing as an assembly super strength, but makes the
total mass weight equivalent to or less than that of a
stamped sheet-metal "ribbed" wing of the same design!
STI uses 0.025" 3003-H14 alloy FAA certified aircraft
"skin" on these wings, depending on size, then is sent
to our assembly area for hand fitting and weld-up. Here
again, depending on the application, the two (2)
"cross-spars" are usually 1.0" o.d. x 0.50" wall
thickness 6061-T6 tubes that run from right to left,
both in front and the rear of each "rib" to form the
sub-structure. This sub-structure is held in place for
hand welding of the "spars" to the "ribs" by a
specially designed "jig" that insures complete square
and flatness of the total assembly, the next step is to
install the the "static-bulbs" ** and the "skin" is then welded on. All end-plates and /or secondary trailing
devices are installed by the customer at the time of
mounting the assembly to the racer.
NOTES:
* any engineering problems are ascertained by a hand
picked team of four aerospace engineers that are outside
consultants for STI.
** the static-bulb" is an exclusive STI patented
friction lowering device. Less friction means that the
racer goes faster through the air!
"NO Speed Shop, Auto Parts, or any mail order
catalog performance warehouse can give you a REAL
aerodynamic RACING WING like STI can. PERIOD!"
|
![tech_info_main_page006008[1]](dragboat1.jpg)
![tech_info_main_page006003[1]](dragboat2.jpg)
![tech_info_main_page006002[1]](dragboat3.jpg)