ACIS - Altitude Compensation Induction System A Significant Increase in Performance at Higher Altitudes RotorWay International's ACIS is an efficient, lightweight system that allows the RI 600S engine to maintain standard sea level performance at higher density altitudes. By not demanding any more power at altitude than is produced at sea level, the life of the engine is unaffected, while its performance at higher altitude is enhanced. How does it work? The principle of the ACIS is simple. Utilizing a belt-driven, supercharger concept, cooler outside air is compressed to a set pressure. This method does away with the hotter intake air and lag connected with a turbocharger. Unique to this system is the continued redundancy of the RI 600S engine. The ACIS uses an electro-mechanical inlet gate control and is connected to the FADEC (Fully Authority Digital Electronic Control) which monitors and maintains proper limits. This follows RotorWay’s goal to provide a fail-safe system for the A600 Talon. The pressurized air from the ACIS is made available to the intake system through the throttle valve. Manifold pressure is limited only by the amount of compressed air available. The ACIS system is the result of hundreds of hours of research and successful testing, meeting strict standards set by RotorWay International for all new product additions. The ACIS is offered as an option to A600 Talon buyers for just $6,077.00 and as a retrofit to current owners of the RI 600N engine for as little as $8,675.00 depending on required engine modifications. (Prices are subject to change without notice) The RotorWay Timeline 1961. A Helicopter Is Born - The Javelin Prototype 1967. The Scorpion I is Intruduced 1972. From One To Two Seats - Scorpion II 1980. The Exec Takes Shape The Elite Becomes Brother of Exec 1990. The Exec 90 and RotorWay Goes International 1994. The Exec 162F Continues the Tradition 2007. The A600 Talon Emerges Helicopter Engines and Engine Parts Components for SIKORSKY CH-53, SH3D,S-60,S-61, BELL UH1, APACHE, HUGHES, BOEING-CHINOOK, AEROSPATIALE Helicopter Engine and Accessories.