From gregory.s.page@nrl.navy.mil Wed Jan 26 11:16:54 2000
Date: Mon, 29 Nov 1999 14:20:58 -0500
From: Greg Page <gregory.s.page@nrl.navy.mil>
To: aiaadbf@amber.aae.uiuc.edu
Subject: Fwd: DBF Q&A #3


>Date: Mon, 29 Nov 1999 09:30:18 -0500
>To: Bob Paczula AIAA, brian richardet, chris bovais, Craig Nickol, david 
>levy, Doug Young Design Engr TC, John Vassberg, johns Design Engr TC, Len 
>Parrish - Pax, Ray Chattman, selig, Tracy Wathen, Cal Poly SLO, Clarkson 
>U, Cleveland State U, E Stroudsburg U, Georgia Tech, Mass Institute of 
>Tech, Miami U, Middle East Tech U  #1- Turkey, Middle East Tech U #2 - 
>Turkey, Middle East Tech U #3 - Turkey, Oklahoma State U #1, Oklahoma 
>State U #2, Purdue U, Queens U #1 - Canada, Queens U #2 - Canada, Syracuse 
>U, U delgi Studi di Roma, U of Arizona, U of California - LA, U of 
>California - SD, U of Central Florida, U of Illinois, U of New Mexico, U 
>of Southern California, U of Texas - Austin, United States Military 
>Academy, University at Buffalo, Utah State U, Virginia Polytechnic and 
>State U, West Virgina U, Wichita State U
>From: Greg Page <gregory.s.page@nrl.navy.mil>
>Subject: DBF Q&A #3
>
>DBF Q&A #3 29Nov99
>
>Q: Is it required that the aircraft empty the payload for the non scoring 
>runs?
>Could we leave the water in for ballast in windy conditions?
>A: No, that is the whole point for having the "unloaded" lap 
>requirement.  The airplane must be designed to handle well, including wind 
>conditions, at both full and empty weights and cg locations.  Since the 
>"ferry" sortie is non-scoring (see the next question) you also want that 
>sortie to expend as little electrical energy as possible, and as little 
>time as possible, so you can compete another "payload" flight after it.
>
>Q: In the FAQ you have the following statement:
>"If the plane does not pass the downwind pylon that sortie's payload will 
>not count, but any prior sorties will still be credited toward the overall 
>score. "
>
>So say you flew this mission "water-empty-empty-water" and the batteries 
>died right after the plane reached the second pylon of the second water 
>lap, forcing the pilot to land. Would both the payloads count towards the 
>final score, or just the first? In other words, does the plane have to 
>complete an entire 3 lap sortie for the weight carried in the sortie to
>count?
>A:  In this case you would get the score as the weight carried on both 
>"payload" or "water" sorties.  The ferry sortie has no specific score 
>value, so the only way to increase your score after completing one 
>"payload" sortie, is to complete both the "ferry" sortie and then another 
>"payload" sortie.
>
>For the example above, the score would be the same if you completed 
>"water-empty-empty-water-empty-empty", but did not have enough battery 
>power left to complete a third "water" or "payload" sortie.
>
>Remember, you must land and load/unload the payload between each "water" 
>or "empty" sortie, but not between the two consecutive "empty" laps.

Gregory S. Page
Formula 402

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