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AVincent Certificates/Ratings/Crew Stations: "Spin recovery in the Decathlon" 08-27-03, 21:36z  Can anyone explain why the recommended spin recovery procedure for the Decathlon calls for elevator neutral before opposite rudder application? Alert Edit | Reply | Reply With Quote | Top

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Subject      Author      Message Date     ID      RE: Spin recovery in the Decathlon Ben_Chiu 08-28-03 1   RE: Spin recovery in the Decathlon Ben_Chiu 08-29-03 2

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Ben_Chiu Certificates/Ratings/Crew Stations: 1. "RE: Spin recovery in the Decathlon" 08-28-03, 20:19z  Greetings: > Can anyone explain why the recommended spin recovery procedure for the > Decathlon calls for elevator neutral before opposite rudder application? On a purely theoretical basis, in order for an airplane to spin it must must always be in a stalled condition. By reducing elevator, you lower the AOA (angle of attack) below the critical AOA and "break" the stall. If I understand your question, you're asking why the recommendation is not to apply down elevator. This is probably because the elevator is so powerful that you might then enter an inverted spin (e.g. stalled with the elevator in the down position) if you're not careful. Hope this helps. Ben -= VPC OffLine Reader 2.1 =- Registered to: Ben Chiu -OLR.PL v1.80- Remove | Alert Edit | Reply | Reply With Quote | Top

Ben_Chiu Certificates/Ratings/Crew Stations: 2. "RE: Spin recovery in the Decathlon" 08-29-03, 18:33z  Greetings again: You might check out: http://bellsouthpwp.net/d/j/djswartz//Unrecoverable_Spins_page_1.htm (Thanks, Dave!) I can't verify the accuracy of the story from my own experience (or lack of in this instance), but one of the cases discussed is a specific problem that can happen with the Decathlon. Dave says that the POH actually does suggest stick first rather than the "traditional" rudder first technique. He goes on to say that using stick first does accelerate the spin, but as the article shows, this may be sometimes necessary. HTH, Ben Remove | Alert Edit | Reply | Reply With Quote | Top

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