Q&A #3

Q: Would aerodynamic wing treatments such at flow fences, vortex generators, and trip strips be considered “vertical surfaces” for the sake of the cost function?
A: The rules specify vertical surfaces as

"WBS 3.0 Empenage
5 hr./Vertical Surface (Any vertical surface, including winglets, struts, end plates, ventrals etc) with no active control".
 
Since it would be too difficult to say when an end plate becomes a flow fence and vice versa, flow fences will be considered vertical surfaces.  Vortex generator's  and boundary layer trips will not be.

Q: If a "pull-out" shelf is made in the fuselage to hold the payload, would that be considered as a speed loader?
A: Not as long as it always remains "attached" to the aircraft when it is open.  If it is removed completely for loading it would be a speed loader, and not allowed.

Q: Do the softballs have to be in view after loading (i.e. visible in the storage space) to ensure proper restraint?
A: No, you can demonstrate that the payload is appropriately restrained during the tech inspection.

-Greg


Gregory S. Page
ITT AES B210
2560 Huntington Ave
Alexandria, VA 22303
202-404-1251
202-767-6194 FAX

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