E-PROPS : Data Sheet
✗ HI-TECH Propellers for AIRCRAFT
✗ The world's lightest propellers
✗ Very strong : 100% carbon, very high fibers ratio, RTM Manufacturing, leading edge protection
✗ Many models for Rotax serie 9, tractor and pusher
✗ Made in France since 2008
✗ E-PROPS production : 45.000 blades / year
✗ Propellers sold in more than 80 countries
1 - Design
2 - E-PROPS range for AIRCRAFT
3 - The lightest propellers
4 - Blades
5 - Blade's foot
6 - Hubs
7 - Spinners
8 - Finish
9 - Nanostrength or Titanium Shielding
10 - Moment of Inertia
11 - Balancing
12 - Quality / Certification / Life limitation
13 - Repairs / Spare Blades
14 - Mechanical Strength / Load Tests
15 - Tightening torque
16 - Max RPM
17 - Maintenance
18 - Satisfied or Your Money Back during 6 Months
19 - Pilots Feedback
20 - Manual
Propellers "of 3rd generation" : efficient, ultra-light, quiet and very strong.
Made in France since 2008 : see page E-PROPS company.
The secret of their exceptional performances ?
- Extensive research of the E-PROPS design department, with many tests campaigns on wind tunnel et the development of an exceptional software called (LmPTR©).
- A manufacturing process which allows a very lightweight.
- Specific E-PROPS designs with high CL profiles. E-PROPS propellers design, see : DESIGN and TESTS
- Propellers with high ESR effect : ground adjustable pitch propellers which behaviour is very near from the behaviour of a variable pitch propeller.
E-PROPS has developed many models for ROTAX serie 9 engines, tractor (DURANDAL range) and pusher (EXCALIBUR range).
Thousands of those propellers equip more than 350 different models of ultralights and aircraft, all over the world.
E-PROPS has not one “universal” blade, that can be cutted as necessary, and which are never very well adapted.
Every E-PROPS propeller is designed and tested for a specific engine, its reducer if any, the diameter, the speed range of the aircraft, the special configuration... All E-PROPS blades have different chords, diameters and profiles, and are produced by specific molds. E-PROPS proposes more than 185 blades geometries, and as result, exceptional performances for each set of aircraft / engine / propeller.
The DURANDAL and EXCALIBUR ranges have been designed for engines with reducers. It is strictly forbidden to use them on a direct drive engine.
A 3-blade diameter 170 cm ground adjustable pitch which weights only 2,6 kg !
E-PROPS are the world's lightest propellers.
The advantages of a light propeller, see here : ULTRA-LIGHT PROPELLERS
The E-PROPS are fully made in carbon.
Optimum use of carbon fibers braid and epoxy resin to obtain ultra-light and very strong blades.
HCF system (Helical Continuous Fibers : Fibres Continues Hélicoïdales), specifically designed by E-PROPS.
Very high fibers ratio : 63%
See the page E-PROPS MANUFACTURING
Carbon fiber rolled up on a titanium ring, for an exceptional strength.
No risk of galvanic corrosion because no metal part.
Hubs made in full carbon + epoxy resin
Ground adjustable pitch system
Compact hub for minimum drag and to optimize engine's cooling
Innovative system to replace the usual spacers in aluminium : EXTENED HUBS
The E-PROPS spinners are in carbon, very strong and very light.
2 types : standard spinners and mini-spinners
See here : E-PROPS SPINNERS
Finish with shiny polish.
The carbon braid remains visible; each blade is unique.
No paint, varnish or gel-coat, because those products are very polluting.
The E-PROPS company is committed in an eco-management approach and proscribes this type of products.
In addition, paints, varnish and gel-coat do not allow to easily repair the blades in case of impact.
All E-PROPS have an internal shielding in the blades : injection at the leading edge of a special resin with Nanostrength® additive shock.
In special cases (as seaplanes), it is strongly recommended to an extra protection on the blades leading edge, in order to reinforce it, with a polyurethane protection tape used on certified helicopter rotor blades.
Since October, 2019, the E-Props propellers, tractor configuration for Rotax serie 9 (912, 912S, 912iS, 914 and 915iS), Durandal range, are now including a TITANIUM shield on the blade leading edge.
See here : NANOSTRENGTH or TITANIUM SHIELDING
The E-PROPS, ultra-lightn, strictly respect the MOI limitations given the engines manufacturers.
Moment of inertia of each model calculated then verified on the tests bench.
See details here : MOMENT OF INERTIA
The E-PROPS propellers are precisely balanced at workshop.
The team is using an electronic bench to balance the propellers, with oscilloscopes.
More information here : BALANCING
The E-Props propellers are designed, manufactured and tested to meet the requirements of the aeronautical standards.
They are ASTM F2506-13 certified (lSA standards).
No life limitation. MTBO recommended at 2.000 hours.
Quality and safety are ongoing concerns for the E-PROPS company, throughout the design, procurement, manufacturing, testing and marketing of all its products.
More information on page QUALITY
Small impacts can be easily repaired (epoxy resin without paint, varnish or gel-coat).
A repair kit is available in this e-shop.
See details here REPAIRS
By E-PROPS, it is possible to change only one blade.
See explanations on the page : SPARE BLADES
E-PROPS is doing many tests on all the propellers models.
Example, centrifugal load : break at 11.000 tonnes, safety coefficient : 7,2 Carbon propeller can hold 6 times the maximal load during 1 hour without any damages.
See here TESTS ON GROUND
The screws tightening must be done with a torque wrench
Torque value is indicated in the Manual given with each propeller.
It is very important to follow the value of each model.
Max RPM, engines ROTAX serie 9 :
2.600 RPM (measured at propeller = engine max RPM / reducer ratio.).
Maintenance is simple :
- Before each flight: visual inspection of the propeller (particularly check the leading edge) and check the screws tightening.
- Every 100 hours of flight and/or every 6 months : check of the screws tightening.
- EXCALIBUR-6 model => every 25 hours of flight and/or every 3 months : check of the screws tightening.
Cleaning of a carbon propeller is made with a sponge, with some water with soap, or with a product for windows cleaning.
E-PROPS is the only propellers manufacturer in the world to propose a guarantee SATISFIED or YOUR MONEY BACK DURING 6 MONTHS to the customers.
Our customers are our best ambassadors!
See here the PILOTS FEEDBACK
=> SEE PAGE MANUALS and DOCUMENTATIONS
✗ The world's lightest propellers
✗ Very strong : 100% carbon, very high fibers ratio, RTM Manufacturing, leading edge protection
✗ Many models for Rotax serie 9, tractor and pusher
✗ Made in France since 2008
✗ E-PROPS production : 45.000 blades / year
✗ Propellers sold in more than 80 countries
DATA SHEET
1 - Design
2 - E-PROPS range for AIRCRAFT
3 - The lightest propellers
4 - Blades
5 - Blade's foot
6 - Hubs
7 - Spinners
8 - Finish
9 - Nanostrength or Titanium Shielding
10 - Moment of Inertia
11 - Balancing
12 - Quality / Certification / Life limitation
13 - Repairs / Spare Blades
14 - Mechanical Strength / Load Tests
15 - Tightening torque
16 - Max RPM
17 - Maintenance
18 - Satisfied or Your Money Back during 6 Months
19 - Pilots Feedback
20 - Manual
1- Design
Propellers "of 3rd generation" : efficient, ultra-light, quiet and very strong.
Made in France since 2008 : see page E-PROPS company.
The secret of their exceptional performances ?
- Extensive research of the E-PROPS design department, with many tests campaigns on wind tunnel et the development of an exceptional software called (LmPTR©).
- A manufacturing process which allows a very lightweight.
- Specific E-PROPS designs with high CL profiles. E-PROPS propellers design, see : DESIGN and TESTS
- Propellers with high ESR effect : ground adjustable pitch propellers which behaviour is very near from the behaviour of a variable pitch propeller.
2- E-PROPS range for AIRCRAFT
E-PROPS has developed many models for ROTAX serie 9 engines, tractor (DURANDAL range) and pusher (EXCALIBUR range).
Thousands of those propellers equip more than 350 different models of ultralights and aircraft, all over the world.
E-PROPS has not one “universal” blade, that can be cutted as necessary, and which are never very well adapted.
Every E-PROPS propeller is designed and tested for a specific engine, its reducer if any, the diameter, the speed range of the aircraft, the special configuration... All E-PROPS blades have different chords, diameters and profiles, and are produced by specific molds. E-PROPS proposes more than 185 blades geometries, and as result, exceptional performances for each set of aircraft / engine / propeller.
The DURANDAL and EXCALIBUR ranges have been designed for engines with reducers. It is strictly forbidden to use them on a direct drive engine.
3- The lightest propellers
A 3-blade diameter 170 cm ground adjustable pitch which weights only 2,6 kg !
E-PROPS are the world's lightest propellers.
The advantages of a light propeller, see here : ULTRA-LIGHT PROPELLERS
4- Blades
The E-PROPS are fully made in carbon.
Optimum use of carbon fibers braid and epoxy resin to obtain ultra-light and very strong blades.
HCF system (Helical Continuous Fibers : Fibres Continues Hélicoïdales), specifically designed by E-PROPS.
Very high fibers ratio : 63%
See the page E-PROPS MANUFACTURING
5- Blade's feet
Carbon fiber rolled up on a titanium ring, for an exceptional strength.
No risk of galvanic corrosion because no metal part.
6- Hubs
Hubs made in full carbon + epoxy resin
Ground adjustable pitch system
Compact hub for minimum drag and to optimize engine's cooling
Innovative system to replace the usual spacers in aluminium : EXTENED HUBS
7- Spinners
The E-PROPS spinners are in carbon, very strong and very light.
2 types : standard spinners and mini-spinners
See here : E-PROPS SPINNERS
8- Finish
Finish with shiny polish.
The carbon braid remains visible; each blade is unique.
No paint, varnish or gel-coat, because those products are very polluting.
The E-PROPS company is committed in an eco-management approach and proscribes this type of products.
In addition, paints, varnish and gel-coat do not allow to easily repair the blades in case of impact.
9- Nanostrength or Titanium Shielding
All E-PROPS have an internal shielding in the blades : injection at the leading edge of a special resin with Nanostrength® additive shock.
In special cases (as seaplanes), it is strongly recommended to an extra protection on the blades leading edge, in order to reinforce it, with a polyurethane protection tape used on certified helicopter rotor blades.
Since October, 2019, the E-Props propellers, tractor configuration for Rotax serie 9 (912, 912S, 912iS, 914 and 915iS), Durandal range, are now including a TITANIUM shield on the blade leading edge.
See here : NANOSTRENGTH or TITANIUM SHIELDING
10- Moment of Inertia
The E-PROPS, ultra-lightn, strictly respect the MOI limitations given the engines manufacturers.
Moment of inertia of each model calculated then verified on the tests bench.
See details here : MOMENT OF INERTIA
11- Balancing
The E-PROPS propellers are precisely balanced at workshop.
The team is using an electronic bench to balance the propellers, with oscilloscopes.
More information here : BALANCING
12- Quality / Certification / Life Limitation
The E-Props propellers are designed, manufactured and tested to meet the requirements of the aeronautical standards.
They are ASTM F2506-13 certified (lSA standards).
No life limitation. MTBO recommended at 2.000 hours.
Quality and safety are ongoing concerns for the E-PROPS company, throughout the design, procurement, manufacturing, testing and marketing of all its products.
More information on page QUALITY
13- Repairs / Spare Blade
Small impacts can be easily repaired (epoxy resin without paint, varnish or gel-coat).
A repair kit is available in this e-shop.
See details here REPAIRS
By E-PROPS, it is possible to change only one blade.
See explanations on the page : SPARE BLADES
14- Mechanical Strength / Tests
E-PROPS is doing many tests on all the propellers models.
Example, centrifugal load : break at 11.000 tonnes, safety coefficient : 7,2 Carbon propeller can hold 6 times the maximal load during 1 hour without any damages.
See here TESTS ON GROUND
15- Tightening torque
The screws tightening must be done with a torque wrench
Torque value is indicated in the Manual given with each propeller.
It is very important to follow the value of each model.
16- Max RPM
Max RPM, engines ROTAX serie 9 :
2.600 RPM (measured at propeller = engine max RPM / reducer ratio.).
17- Maintenance
Maintenance is simple :
- Before each flight: visual inspection of the propeller (particularly check the leading edge) and check the screws tightening.
- Every 100 hours of flight and/or every 6 months : check of the screws tightening.
- EXCALIBUR-6 model => every 25 hours of flight and/or every 3 months : check of the screws tightening.
Cleaning of a carbon propeller is made with a sponge, with some water with soap, or with a product for windows cleaning.
18- Satisfied ou Your Money Back during 6 Months
E-PROPS is the only propellers manufacturer in the world to propose a guarantee SATISFIED or YOUR MONEY BACK DURING 6 MONTHS to the customers.
19- Avis Pilotes
Our customers are our best ambassadors!
See here the PILOTS FEEDBACK
20- Manual
=> SEE PAGE MANUALS and DOCUMENTATIONS
