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Whatever slows you down in the least amount of time from the fastest impact
is the wrong thing to do. I think I'd take the less speed, as long as the touchdown was under control. I think that the skiing time with the wheel down would be measured in fractions of a second even with excess speed. I have experienced the skiing trick in a J-3. On touchdown there is a noticeable deceleration and it takes extra power to keep it going. Take away that power and I think we would have been tail over nose within the length of the plane, from what would otherwise be a standard wheel it on landing. The technique of locking the brakes probably has more to do with how much water you want on the wings versus the skiing effect. The roostertails from the rotating wheels was impressive. I also think that the depth of the water is a factor. My experience was in the deep part. Anything over a few feet is probably called deep. Using that experience, I would assume that the wheel down glider would not travel more than a couple of feet before the wheel would submerge. I would also assume that the glider would stop much more rapidly with the wheel under the water. The idea that the fuselage would be sucked down by it's shape (gear up) will be a terrible surprise to all those boaters out there with upturned stems. Maybe we need to advise them to put a wheel under the bow so that the boat will settle into the water easier and won't slow down as fast? In article , Wallace Berry wrote: Wheel down is the safe way to land on water. I believe that "wheeling it on", in other words, not a minimum energy landing is the way to go. Locking the wheel brake (for gliders which have wheel brakes actuated by other than the dive brake handle) might be a good idea. Bush pilots land wheeled airplanes on water frequently. They lock the wheel brakes and hydroplane on the surface right up to sandbars. What one bush pilot told me was that in a Super Cub, as long as you were at 30 mph or above, the plane would just ride along on the surface as if you were on pavement. Even to the point that a hard touchdown would result in a bounce. I wouldn't have believed him but he showed me videos of him and his buddies landing on lakes. He also said that it was important to pick a sandbar that was long enough to get back to 30 mph before you hit the water. So, for water landings, it would be wheel down, brakes locked if possible, land just like wheeling a 2-33 on at the local field. Hope I don't ever have to try it out. |
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