In mid-October, FAA provided another update to the Light Aircraft Manufacturers Association. It speaks to bigger — and faster — flying machines ahead for Light-Sport Aircraft. Let’s look at one aspect of the regulation-in-progress. First, a caveat: While FAA is communicating some of the ideas they are planning for LSA this is an effort of rule writing likely to see more changes. What LAMA reports to its members and what we provide here is not certain …although it remains well supported at the top of FAA. Even higher in the federal hierarchy, the Department of Transportation recently gave a go-ahead to continue their work. Not all currently planned ideas may survive either the internal debate nor the public comment period. Single Lever Control In-Flight Adjustable Prop This phrase, Single Lever Control, communicates two things: (1) that the system on the airplane seen in the video adjusts the prop to optimal pitch for the phase of flight, and (2) that the system does so based on the pilot’s movement of the throttle combined with its own information about parameters of the aircraft at that time.
The Changing Face of Light-Sport Aircraft — Speed and Safety Behind Single Lever Control
Single Lever Control In-Flight Adjustable Prop
This phrase, Single Lever Control, communicates two things: (1) that the system on the airplane seen in the video adjusts the prop to optimal pitch for the phase of flight, and (2) that the system does so based on the pilot's movement of the throttle combined with its own information about parameters of the aircraft at that time. In short, call it an "auto prop."Progressive Aerodyne's Searey is the leading LSA seaplane on the market today. It is the test airframe for RS Aerotech's single lever control system.
Safety Argument
When LAMA personnel went to Washington DC to advocate on behalf of pilots and producers in the light aircraft sector, we knew the argument could not be that we wanted an in-flight adjustable prop to go faster. The truth is that many LSA can already hit the speed limit enforced by the current regulation.CPS' Bryan Toepfer shows off a newly received Rotax 915iS engine.
RS Aerotech's Searey with Rotax 915iS engine, MT prop, and single lever control.
- Single lever control of engine power and thrust; 100% fail-safe behavior through mechanical limitations
- Real time adjustment of engine and propeller parameters:
- Maximum thrust during take-off and climb and
- Maximum efficiency and endurance during cruise flight
- Up to 30% more thrust compared to fixed-pitch propeller
- Fuel savings in cruise flight (environmentally friendly, spend even more time in the air!)
- Improved situational awareness through his Power Margin Indicator instrument
- Simple installation, seamless integration into the Rotax 912iS engine system