Servicing of chemical de-icing systems, Other Engineering

SERVICING OF CHEMICAL DE-ICING SYSTEMS:

It is essential for the correct operation of the ice protection system that servicing is carried out on a regular basis.  The fluids used in these systems are based on:

  • Isopropyl alcohol
  • Phosphate compounds

Isopropyl alcohol is flammable and must therefore be treated with great care.  Both the fluid types are prone to solidifying in to a jelly type substance if left on the blades the resulting deposits will build up and eventually obstruct the distribution nozzles and the overshoe grooves.  This will lead to uneven distribution, or no distribution at all, of the de-icing fluids.

The commonly accepted method of keeping the de-icing pipes clear is to flush the system using methylated spirit and distilled water as follows.  This is a general procedure and not specific to any aircraft type. Always refer to the aircraft AMM for the correct procedures.

  • Fill the tank with the above mixture.
  • Operate the pump observing any time limitation on the motor.
  • Turn the propeller by hand until the fluid is seen to emerge from the delivery nozzles.
  • Empty the tank through the nozzles to ensure sufficient cleaning fluid has passed through the system.
  • Clean the blades with methylated spirit or warm soapy water, paying particular attention to the grooves in the overshoes.
  • If the system is to be left empty it should be inhibited according to the manufacturer's instructions.

 

Posted Date: 9/14/2012 4:58:41 AM | Location : United States







Related Discussions:- Servicing of chemical de-icing systems, Assignment Help, Ask Question on Servicing of chemical de-icing systems, Get Answer, Expert's Help, Servicing of chemical de-icing systems Discussions

Write discussion on Servicing of chemical de-icing systems
Your posts are moderated
Related Questions
Integrator This circuit performs the calculus operation of integration. An operational amplifier with negative feedback applied via a capacitor (instead of a resistor) will pe

Turbine Blade Clearance. Creep is term used to describe the continuous and permanent stretching of turbine blades due to high temperatures and centrifugal forces acting on the

What are the no-arbitrage lower bound, and the no-arbitrage upper bound, of the vertical spread c(k1)-c(k2)?

How laptop making main function plz established??

Hello, I''m doing a project that needs an ANSYS software for analysis calculation, is it possible to do me that if I provide you all the the information needed. Thank you

I WANT TO KNOW WHAT IS DPC TERM MEANING IN CIVIL ENGINEERING

Expertsmind.com brings you unique solution in electrical engineering -          A constellation is a region of the sky with well defined borders; familiar star pat

Degree of reaction measures the way compression or expansion (for turbines) is shared between rotor and stator shared between rotor and stator of a stage (stage ≡ rotor + stator)

Fuel control system in Aircraft Engine: The computer controls the fuel flow to the engine to maintain a constant rotor RPM. During normal operation the optimum engine/rotor spe

Water enters a smooth thin-walled tube of 1 inch diameter at 50F and leaves at 150F. Heat is supplied to the water by condensing steam on the surface of the tube at a constant temp