E-PROPS HI-TECH CARBON PROPELLERS


DONNEES

 

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WHY CHANGE PROPELLER ?

4 minutes to ask the good questions

 

why change aircraft propeller

Propeller is not an accessory

It is an essential equipment, indispensable, exactly as the aircraft structure and as the engine. A light aircraft or an ultralight cannot take-off or cruise without propeller.


The propeller is a critical equipment :

 

 helices aeronautiques

 

Those characteristics are essential to obtain the perfect propeller that doesn't get noticed.

Furthermore, the propeller must be nice, because "a beautiful plane is a plane which flies well".

 

 

 

durandal

 

 

 

But all propellers do not meet those specifications. Why ?

Some explanations :

 

 

eprops propellers

 

And regarding the efficiency... Which manufacturer tests then publishes comparative technical data of its propellers ? In order to have the best performances of a propeller, each blade has to be especially developed for one engine, one gear box, one diameter, a speed range of the aircraft and a defined configuration. The propeller is necessarily a custom-made product. However, most of propellers manufacturers have only some blades designs in their catalogs.

eprops propellers

 

 

eprops propellers

 

 

eprops propellers

 

 

eprops propellers

 

JMB aircraft helices propellers

 

 

Ask yourself question :

Do my present propeller, the one which allows my ultralight to take-off, climb and cruise, meets those essential specifications ?

Is it efficient, light, simple, well-designed, silent, well-manufactured, strong, esthetic and well-balanced ?

 


eprops ouiCongratulations, you have the perfect propeller, well-adapted to your needs and which allows to fly safety in your aircraft


non epropsIt is time to change !

Your saffety is first threatened, and also your comfort, and in the long term your budget.

Bad performances, fuel overconsumption and vibrations are not fate !

 

tires e-props

 

Objections :


You have no time to change your propeller ?

Choose a simple propeller, with a good manual; so you just need 2 hours for assembly and pitch adjustment.


You don't have the budget for a new propeller ?

An efficient, new, solid and safe propeller, costs less than 2% of the total price of a new ultralight, and less than 5% of the amount of a second-hand mid-range ultralight.

Sometimes you have to make some choices : a good propeller is essential, some accessories not.


The aircraft manufacturer has chosen my propeller : that's the best choice for my aircraft.

 

Yes - and no ! An aircraft manufacturer has not always the time and the possibility to test all propellers on the market. This model is perhaps the one which he has made all certification tests (and he doesn't want to make them again - we can understand !), or the one on which he has the best margin... The manufacturer choice is not always the best technical choice, because we are not in a perfect world.


You don't know what propeller you should choose ?

All propellers manufacturers are saying the same thing : their propellers are the best, the stronger, the more silent. Of course. Same by E-PROPS !

Perhaps you have to favour a propeller manufacturer who will give proofs, and be sure that you can give the propeller back and be reimbursed if this model does not suit you...

 

 

 

frise eprops

 

 

 

At E-PROPS we do not assert without proof

 

 

E-PROPS : the lightest propellers on the market

A 3-blades carbon propeller diameter 170 cm for only 2,6 kg

See comparative => LIGHT PROPELLERS FOR AVIATION

 

 

E-PROPS : 3rd generation propellers : new aerodynamic designs become possible. High CL profiles, narrow chords, very big diameters, positions of the blades... The numerical modelling studies allow to optimize propeller's performances on all speed's range of the aircraft.

See pages :

 

 

PROPELLERS of 3rd GENERATION

DESIGN OF THE E-PROPS

TECHNICAL CHARACTERISTICS

 

 

E-PROPS : very simple propellers

For example, see => la simplicité est la sophistication suprême

Only 17 pieces against 40 pieces for a competitor standard propeller

 

 

E-PROPS : particularly efficient propellers

Some comparative tests are showing that ground adjustable pitch E-PROPS propellers are more efficient than some variable pitch propellers on the market.

See tests reports = FLIGHT TESTS

 

 

E-PROPS : hi-tech process for manufacturing, tests and balancing

See pages :

 

 

MANUFACTURING

GROUND TESTS

BALANCING

Propellers are certified following the LSA standard (ASTM F2506-13)

 

 

E-PROPS : strong propellers with leading edge protection

No life limitation, MTBO 2.000 h

See : NANOSTRENGTH® LEADING EDGE PROTECTION

 

 

E-PROPS : silent propellers

E-PROPS has developed specific concepts to reduce the noise :

QD2 concept : a 4-blades composed of 2 x 2-blades with different angles to reduce the noise and increase the performances. Noise reduction in comparison with a standard propeller : about 8 decibels.

See : EXCALIBUR-4

H²D concept : Hexapale Hexa Déphasée. It is the same principle as some anti-torque tail rotors of helicopters, to significantly reduce vibrations and noise.

See : EXCALIBUR-6

 

 

The E-PROPS equip more than 171 ultralights / aircraft

Here is the updated list of the aircraft on which E-Props propellers have been mounted and validated (excepted paramotors and UAV) :

ULTRALIGHTS with E-PROPS PROPELLERS

 

 

The customers are freely given their feedback

See this page : CUSTOMERS FEEDBACK

 

 

And at the end, because E-PROPS does not tell false stories, HELICES E-PROPS is the sole company to offer a garantee "SATISFIED or REIMBOURSED during 6 MONTHS" without conditions

See the page : CLAUSE "SATISFIED or REIMBOURSED DURING 6 MONTHS"

 

 

satisfait ou remboursé hélices ULM

 

 

 

CHANGE YOUR PROPELLER, BUT FREELY and WITH YOUR EYES OPEN !

 

 

 

 

E-PROPS HI-TECH CARBON PROPELLERS