E-PROPS propellers for Aircraft / Ultralights: Data Sheet
✗ HI-TECH Propellers for AIRCRAFT / ULTRALIGHTS, ground adjustable pitch
✗ The world's lightest propellers
✗ Carbon propellers with Titanium leading edge protection
✗ Very strong : 100% carbon, very high fibers ratio, RTM Manufacturing, leading edge protection
✗ Tractive and propulsive configurations; different chord widths and blade profiles
✗ Each model available in 2, 3, 4, 5 or 6 blades, in 9 different diameters (from 155 to 195 cm)
✗ Made in France since 2008
✗ E-PROPS production : 45.000 blades / year
✗ Propellers sold in more than 80 countries
01 - Design
02 - E-PROPS range for Aircraft / Ultralights
03 - The world's lightest propellers
04 - Blades
05 - Blade's foot
06 - Hubs / Spacers
07 - Spinners
08 - Finish
09 - 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 - Manuals
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, the development of an exceptional software called (LmPTR©) and many tests mechanical campaigns (example => VIDEO : E-PROPS test campaign V20 range (April 2020)
- 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.
At E-PROPS, our team does not propose a "universal blade" that does everything, that can be cut at will, and that is therefore not always well adapted to the mission of the aircraft ...
Each E-PROPS is designed and developed for :
- the characteristics of the motor in question and its gearbox (if applicable)
- the study of engine cooling and air flow in the engine
- a defined aircraft speed range
- the aircraft configuration: tractor, pusher, high wings, low wings, and wings/fuselage interactions
- the use of the aircraft: speed, cruise, towing, STOL... and the desired performances
E-PROPS has developed numerous blade models, with several rope widths and several profiles, in both tractive and propulsive configurations.
Each model is available in 2, 3, 4, 5 or 6 blades, in 9 different diameters (from 155 to 195 cm).
Thousands of E-PROPS propellers equip more than 250 different models of aircraft (LSA) and ultralights, all over the world.
E-PROPS are by far the lightest propellers in the world.
A few weighs, including screws and bolts :
- 3-blade tractor DURANDAL-3 dia 170 cm Titanium leading edge protection for Rotax 912S (100 hp) : 2.1 kg
- 2-blade tractor DURANDAL-2 dia 175 cm Titanium leading edge protectionfor Rotax 912 (80 hp) : 1.6 kg
- 5-blade pusher EXCALIBUR-5 dia 172 cm Titanium leading edge protection for Rotax 914 (115 hp) : 3 kg
To understand the advantages of a lightweight propeller, click 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
- V12 range (manufacture from February 2012): compact two-piece volume hub for minimum drag and optimised engine cooling
- V20 range (manufacture from April 2020): hub in 3 parts (2 ultra-thin parts and 1 spacer with centering drive lugs)
Compact hub for minimum drag and to optimize engine's cooling
Innovative system to replace the usual spacers in aluminium : EXTENDED HUBS
- V12 range : 11 spacer lengths, from +10 to 110 mm, completed by a 5 mm grey fibers plate if required
- V20 range : 38 different spacer lengths, from -20 to +170 mm
The E-PROPS spinners are in carbon, very strong and very light.
There are 3 types :
- V12 standard spinner : only compatible with the V12 range, diameters from 210 to 300 mm
- mini spinner with central screw : compatible only with the V12 range, diameter 130 mm
- V20 standard spinners : compatible only with the V20 range, diameters from 210 to 380 mm
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.
Only the spinners can be painted.
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 put 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 V20 range are including a TITANIUM protection on the blade leading edge.
See here : NANOSTRENGTH or TITANIUM SHIELDING
The E-PROPS, ultra-light, 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
On the V20 range, the Titanium leading edge protection can be changed if it is damaged: it is not necessary to change the whole blade.
By E-PROPS, it is also possible to change only one blade.
See explanations on the page : SPARE BLADES
E-PROPS is doing many tests on all the propellers models.
See here TESTS ON GROUND
Example => VIDEO : E-PROPS test campaign V20 range (April 2020)
Test campaign : E-PROPS propellers for Aircraft (LSA) & Ultralights, 2020 range. Tensile, bending and torsion tests.
Carbon parts as strong as the Rotax gearbox shaft !
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 exactly.
The E-PROPS propellers are designed for the limitations of each engine.
Example : 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 V12 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
✗ Carbon propellers with Titanium leading edge protection
✗ Very strong : 100% carbon, very high fibers ratio, RTM Manufacturing, leading edge protection
✗ Tractive and propulsive configurations; different chord widths and blade profiles
✗ Each model available in 2, 3, 4, 5 or 6 blades, in 9 different diameters (from 155 to 195 cm)
✗ Made in France since 2008
✗ E-PROPS production : 45.000 blades / year
✗ Propellers sold in more than 80 countries
DATA SHEET
01 - Design
02 - E-PROPS range for Aircraft / Ultralights
03 - The world's lightest propellers
04 - Blades
05 - Blade's foot
06 - Hubs / Spacers
07 - Spinners
08 - Finish
09 - 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 - Manuals
01- 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, the development of an exceptional software called (LmPTR©) and many tests mechanical campaigns (example => VIDEO : E-PROPS test campaign V20 range (April 2020)
- 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.
02- E-PROPS range for Aircraft / Ultralights
At E-PROPS, our team does not propose a "universal blade" that does everything, that can be cut at will, and that is therefore not always well adapted to the mission of the aircraft ...
Each E-PROPS is designed and developed for :
- the characteristics of the motor in question and its gearbox (if applicable)
- the study of engine cooling and air flow in the engine
- a defined aircraft speed range
- the aircraft configuration: tractor, pusher, high wings, low wings, and wings/fuselage interactions
- the use of the aircraft: speed, cruise, towing, STOL... and the desired performances
E-PROPS has developed numerous blade models, with several rope widths and several profiles, in both tractive and propulsive configurations.
Each model is available in 2, 3, 4, 5 or 6 blades, in 9 different diameters (from 155 to 195 cm).
Thousands of E-PROPS propellers equip more than 250 different models of aircraft (LSA) and ultralights, all over the world.
03- The world's lightest propellers
E-PROPS are by far the lightest propellers in the world.
A few weighs, including screws and bolts :
- 3-blade tractor DURANDAL-3 dia 170 cm Titanium leading edge protection for Rotax 912S (100 hp) : 2.1 kg
- 2-blade tractor DURANDAL-2 dia 175 cm Titanium leading edge protectionfor Rotax 912 (80 hp) : 1.6 kg
- 5-blade pusher EXCALIBUR-5 dia 172 cm Titanium leading edge protection for Rotax 914 (115 hp) : 3 kg
To understand the advantages of a lightweight propeller, click here : ULTRA-LIGHT PROPELLERS
04- 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
05- Blade's feet
Carbon fiber rolled up on a titanium ring, for an exceptional strength.
No risk of galvanic corrosion because no metal part.
06- Hubs / Spacers
Hubs made in full carbon + epoxy resin
Ground adjustable pitch system
- V12 range (manufacture from February 2012): compact two-piece volume hub for minimum drag and optimised engine cooling
- V20 range (manufacture from April 2020): hub in 3 parts (2 ultra-thin parts and 1 spacer with centering drive lugs)
Compact hub for minimum drag and to optimize engine's cooling
Innovative system to replace the usual spacers in aluminium : EXTENDED HUBS
- V12 range : 11 spacer lengths, from +10 to 110 mm, completed by a 5 mm grey fibers plate if required
- V20 range : 38 different spacer lengths, from -20 to +170 mm
07- Spinners
The E-PROPS spinners are in carbon, very strong and very light.
There are 3 types :
- V12 standard spinner : only compatible with the V12 range, diameters from 210 to 300 mm
- mini spinner with central screw : compatible only with the V12 range, diameter 130 mm
- V20 standard spinners : compatible only with the V20 range, diameters from 210 to 380 mm
See here : E-PROPS SPINNERS
08- 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.
Only the spinners can be painted.
09- 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 put 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 V20 range are including a TITANIUM protection on the blade leading edge.
See here : NANOSTRENGTH or TITANIUM SHIELDING
10- Moment of Inertia
The E-PROPS, ultra-light, 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
On the V20 range, the Titanium leading edge protection can be changed if it is damaged: it is not necessary to change the whole blade.
By E-PROPS, it is also 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.
See here TESTS ON GROUND
Example => VIDEO : E-PROPS test campaign V20 range (April 2020)
Test campaign : E-PROPS propellers for Aircraft (LSA) & Ultralights, 2020 range. Tensile, bending and torsion tests.
Carbon parts as strong as the Rotax gearbox shaft !
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 exactly.
16- Max RPM
The E-PROPS propellers are designed for the limitations of each engine.
Example : 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 V12 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- Manuals
=> SEE PAGE MANUALS and DOCUMENTATIONS
