✗ PLUG'n'FLY = HI-TECH propellers for paramotors, paratrikes, powered paragliding (ppg)
✗ The world's lightest propellers : less than 500 gr for a 2-blade !
✗ Very strong : 100% carbon, HCF process, Nanostrength® leading edge protection
✗ Thousands of models : for all engines, from 2 to 6 blades, diameters 115 to 180 cm
✗ Made in France since 2008
✗ E-PROPS production : 30.000 blades / year
✗ Propellers sold in more than 80 countries
PLUG'n'FLY TECHNICAL DATA
Propellers of 3rd generation : efficient, ultra-light and strong.
High CL profiles by Helices E-Props (software LmPTR).
Adapted diameter and blades' numbers defined according to engines and reducers
The secret of their exceptional performances ? Specific E-PROPS design with high CL profiles, thin chords and SCIMITAR shape : more thrust, less inertia, fuel economy and noise reduction.
According to diameters, engines and their reducers, it exists thousands of PLUG'n'FLY models (2 to 6-blades), with pitch every 0,5° in both senses (CW and CCW), sold in more than 80 different countries.
Some models weigth less than 420 gr !
About 30 to 60% less than competitor props.
The E-PROPS are by far the lightest propellers on the market.
Advantages of a light propeller : see page ULTRA-LIGHT PROPELLERS
100% carbon + epoxy resin.
Optimum use of carbon fibers braid to obtain light and strong blades.
Foam core with D-Box.
RTM manufacturing process.
Carbon braid, with continue fibers between upper and lower surfaces of the blade.
The HCF (Helical Continuous Fibers) process, specifically designed by E-PROPS, ensures an exceptional strength of the 100% carbon + epoxy resin blade, from leading edge to trailing edge, from blade's foot to tip.
Two sectionnable parts, very simple to assembly.
Thickness of the blade's foot : 28 mm
for classic range / 38 mm
for Scimitar range.
E-PROPS has made extensive research on the blades tips, with many tests on different configurations : rounded, cut with angles, with upper or lower winglets... The best performances and the lower noise are reached with a straight cut tip. All other configurations are for marketing.
Finish with shiny polish.
No gel-coat, no paint, no varnish, because the E-PROPS company has a eco-responsible approach.
=> E-PROPS and Sustainable Development - pdf file
The carbon braid remains visible, and each blade is unique.
Leading edge protection
Strong leading edge protection.
Internal shielding of the blades : injection at the leading edge of a special resin with Nanostrength® (ARKEMA product : high kinetic energy absorption capacity).
=> Leading Edge Protection : Nanostrenght Shock Additive - pdf file
Moment of Inertia
Moment of inertia of each model calculated then verified on the tests bench.
Strict respect of the limitations of the engines manufacturers.
=> Propellers : Moment of Inertia - pdf file
Propellers balanced with an electronic bench.
See page BALANCING
Traceability / blade's replacement
Model's ref on each blade.
A RFID chip is inserted in each blade, with all technical data inside.
Unique serial number on each blade.
Strict quality control; quick replacement of one blade possible.
See page REPAIR / SPARE BLADES
Mechanical Strength / Tests
E-PROPS design department is doing centrifugal load tests on all its models.
Carbon propeller can hold 4 times the maximal load during 1 hour without any damages (AESA standards ask for 2 times).
Tracking / Dynamic Gap
The maximum static tracking is 25 mm (tracking is not important if there are no vibrations).
Dynamic gap : up to 2 cm (the blade can move towards the engine at max power).
This gap is depending on the engine assembly, on the cage and on the silent-blocks.
It is recommended to part the propeller from the cage of minimum 4 cm.
See page BALANCING / TRACKING
The holes on the PLUG'n'FLY are made to adapted to each engine - reducer.
See page HUBS DRILLING
On some old PLUG'n'FLY models, drilling parterns are using only 4 holes on the 6 holes. It is normal and those configurations have been calculated and tested.
6-blades propellers are assembled on 130 hp engines by 6 screws M8; 4 screws M8 are far enough to assemble a propeller on a 35 hp engine...
Never put a rubber spacer between the reducer and the propeller; the screws would break.
Screws 6 mm = 8 N.m
Screws 8 mm = 16 N.m
measured at propeller = engine max RPM / reducer ratio.
See page GEARBOX and REDUCER RATIO
Depends on the propellers model.
Adapted only on engines with gear box : never user a PLUG'n'FLY propeller on a combustion direct drive engine.
Maintenance before each flight: visual inspection of the propeller and check of the screws.
Periodic maintenance: check of the tightening every 25 hours of flight or every 3 months.
Cleaning of a carbon propeller is made with a sponge, with some water with soap, or with a product for windows cleaning.
Small impacts / Repairs
Small impacts can be easily repaired (epoxy or araldite resin, small sanding).
If an incident or a shock require an important repair, this one must be realized by HELICES E-PROPS or an agreed repairing center.
See page REPAIR / SPARE BLADES
=> Manual of PLUG'n'FLY propellers (Nov 2018) - pdf file