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Airbuses Spoilers And Parasite Drag  
User currently offlineRadarbeam From Canada, joined Mar 2002, 1311 posts, RR: 4
Posted (13 years 11 months 2 weeks 3 days 6 hours ago) and read 2539 times:

Hey folks,

Does anyone knows if the drag created by the reverser doors on airbuses aircraft accounts for a good chunk of the deceleration. Note that I'm suggesting that the doors would be open into the airflow around the engine but no reverse power would be used. I've been wondering that for some time now. I'm guessing that they creates some parasite drag, thus they help slow down the aircraft.

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User currently offlineBio15 From Colombia, joined Mar 2001, 1089 posts, RR: 7
Reply 1, posted (13 years 11 months 2 weeks 3 days 5 hours ago) and read 2524 times:

Correct me if I'm wrong, but if the reverser doors open, bypass airflow will be redirected through them, even at idle power.

Assuming the engine is off, the 4 reverser doors on each engine will interfere with the airflow around the engines by blocking it, so it would help in slowing the aircraft down. Although they don't account for a good chunk of the deacceleration.


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