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Sportsman 2020 Known question

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  • Sportsman 2020 Known question

    I have a couple questions about Sportsman 2020 Known. Maneuver 3 looks like a loop with a positive snap at the top of loop, which means I am inverted when doing the snap, right? And is maneuver 7 an inbox (not outbox) move, with a humpty on airframe side requiring rudder to perform top of humpty rather than elevator?
    Dave

  • #2
    Maneuver 3 is an avalanche and you are correct, you will do a positive snap while inverted. However, it will be during a positive G maneuver. Maneuver 7 Humpty is entered cross box then you pull up to vertical (elevator) and pull across the top (elevator), then 2 of 8 point roll to exit upright to the left.
    Rich
    Krzy4RC
    #IAmIMAC
    SCRD/Newsletter Editor

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    • #3
      Does the crossbox in M7 have to be toward the flight line as drawn? I understand your directions but not the Aresti for M7. It appears to approach flight line in a cross box but then does humpty at 90 degrees to crossbox not inline with cross box. I suppose there will be videos on YouTube before long so can see it but reading Aresti is a bit confusing. Thanks for the reply in any case.
      Dave

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      • #4
        No. You have the option of in or out. But you have to exit in the correct direction and orientation.
        Rich
        Krzy4RC
        #IAmIMAC
        SCRD/Newsletter Editor

        Comment


        • #5
          Fig 6 exits on the y axis (perpendicular to the flight line) either inbound or outbound. Your entry direction on fig 7 (in or out) depends on whether you spin left or right on fig 6. Regardless, the half loop on 7 must be inside and on the y axis (it will be the opposite direction as your entry line).
          Last edited by Ty Lyman; 10-30-2019, 02:20 PM.

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          • #6
            Ok, I get it, humpty on same line as cross box, Y axis, opposite of entry direction. Aresti looked like humpty was parallel or X axis which made no sense but I am no expert in Aresti

            thanks Ty and Rich!

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            • #7
              Always check the roll elements on the vertical lines, that's what will tell you whether a fig ends on the x or the y axis. It's difficult to accurately represent some of these intricacies on 2d.

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              • #8
                Hi David, as an aside, the decision on a cross box maneuver to go either out or in, can be based on several different factors. For example, if there is a degree of a cross wind, and your airplane gets carried out, then you can take advantage to bring it back in by doing so. Also, if the airplane is too close to dead line, you may choose to go out with a cross box maneuver. No matter what, it is always a good idea to practice both ways, that way you can be prepared to do either based on the situation you are in.

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                • #9
                  Good advice, practicing both directions is good idea.

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                  • #10
                    100% agree that you should practice both directions, as well as B and C sequences. However, I don't think the reason to practice both ways is because you will be carried in/out by a crosswind. If that's the case, you're losing points on all the maneuvers by not holding a line parallel to the flight line. Practice long and hard holding all lines and loops parallel to the flight line. Keep the in or out on the cross box maneuvers in your back pocket in case you mess up somewhere and need to reset yourself.

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                    • #11
                      The avalanche looks like it will be hard to do a round loop, perhaps I need more practice on snaps

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                      • #12
                        It is expected (required actually) that the snap will cause a displacement, and the loop will not be perfectly round or along the same plane. The trick is to get the pitch break followed by autorotation, and then correct to same radius on the backside and parallel to the plane of the first half of the loop.

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                        • #13
                          Ok so don’t flatten the loop near the top just to get it round, instead get corrected and keep radius and plane. I will have to try some, when Michigan gets some flying weather!

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