PPRuNe Forums - Airbus questions that I cannot resolve!!!!!

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I have just received a response from a technical expert at Honeywell that was involved in developing the Predictive windshear system installed on most Airbus models in service.

The guidance provided is directly from the NASA study “Airborne Systems Technology Application to the Windshear Threat” that was the guiding document during the develepoment of PWS.

The tech expert advised several issues worth considering primarily

Turning increases AOA at a point when reduced AOA is the primary factor in increasing windshear survivability.
PWS events are by nature brief and by the time the aircraft arrives at the highest level of threat the event has already diminished
Turning can disrupt traffic flow and place other aircraft in danger
Because of the narrow alert area you could turn to avoid one windshear, only to fly into a stronger one while you are maneuvering

Quote:

Originally Posted by oicur12.again (Post 10629985)

Turning increases AOA at a point when reduced AOA is the primary factor in increasing windshear survivability.
PWS events are by nature brief and by the time the aircraft arrives at the highest level of threat the event has already diminished
Turning can disrupt traffic flow and place other aircraft in danger
Because of the narrow alert area you could turn to avoid one windshear, only to fly into a stronger one while you are maneuvering

FCTM :

If a predictive windshear alert is triggered during initial climb, the flight crew must:

- Set TOGA

- Closely monitor the speed and the speed trend

- Ensure that the flight path does not include areas with suspected windshears

- Change the aircraft configuration, provided that the aircraft does not enter windshear.

Why would You keep flying straight towards the WS ?