Shark Nose (APP / SAP)
Shark Nose is APCO's leading-edge profile. As the APP profile it retains, per the manufacturer, internal pressure across the entire speed range ('zero deflations or momentarily pressure drops'); SAP ('Supported Accelerated Profile') is the reinforcement system that stabilises the leading edge.
Also known as: APP · Sharknose · SAP · Supported Accelerated Profile
APP — the Sharknose profile
Original statement on the VIVA:
“A specially developed APP type profile (Sharknose) is used throughout. This profile increases and retains internal pressure across the entire speed range, delivering a flight experience with zero deflations or momentary pressure drops inside the canopy. Confidence-inspiring from the very first flight.”
And on the speed bar: “the APP / sharknose profile keeps the wing highly pressurized and collapse resistant throughout the speed range.”
SAP — Supported Accelerated Profile
APCO defines SAP as “a reinforcement system that stabilises the wing’s leading edge”. On the NRG III: “The shark nose profile supported by SAP technology generates a much more efficient wing than ever before, but does not compromise on safety.”
Where it is used
APCO names APP/Sharknose on the VIVA and the sharknose tandem, among others; SAP on the NRG III. Details per model on the product page.