Module 2
Cards (14)
- Rain-removal systems - designed to allow to have a clear view of the airport when taxiing and to allow him or her to see the approach and departure paths and runway environment when taking off and landing during rain
- Rain-removal systems - systems that are not commonly used during flight at altitude
- Rain - can be removed using windshield wipers, chemical repellents in combination with windshield wipers, or by a flow of air
- Several different ways to remove the rain from the windshields Most aircraft use one or a combination of the following systems:
- windshield wipers
- chemical rain repellent
- pneumatic rain removal (jet blast)
- windshields treated with a hydrophobic surface seal coating
- Electrical Windshield Wiper System – system where the wiper blades are driven by an electric motor(s) that receive (s) power from the aircraft’s electrical system
- Almost all windshield wiper systems use electrical motors. Some older aircraft might be equipped with HYDRAULIC WIPER MOTORS
- Windshield wiper systems may be operated:
- electrically
- hydraulically
- pneumatically
- Wiper systems are electrically operated and controlled by a COMMON GANG SWITCH located on the pilots’ overhead panel
- The switch provides a selection of four wiper-action speeds ranging from 190 to 275 STROKES per minute and controls the stowing of the wiper blades in a PARK position when the system is not use.
- Windshield-wiper system consists of a:- drive motor- control switch- resistor box- flexible drive shaft- torque converter- windshield-wiper assembly
- Hydraulically and pneumatically operated wiper systems - requires a pressure supply to be directed to an actuator
- Speed Control Valve - allows the pilot to select the speed at which the wipers will operate
- Rain Repellant System - permits application of the chemical repellant by a switch or push button in the cockpit\
- Different rain control systems:
- Windshield Wiper System
- Chemical Rain Repellant System
- Pneumatic Rain Removal System