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--- searchwing-waterlanding [2019/03/30 15:28]
j0ge4622 Merged topic waterproof and -landing
+++ searchwing-waterlanding [2021/04/13 09:31]
beckmanf [Kugellager]
@@ Line 11: / Line 11: @@
   * [[https://www.youtube.com/watch?v=dBxiN9bK3UI|Thales Fulmar with waterlanding]] with [[https://www.thalesgroup.com/sites/default/files/database/d7/asset/document/fulmar-ing_final_24-02-2014.pdf|Datasheet]]
-===== Construction =====
+===== Kugellager =====
-[[:searchwing-waterproof-glue|]]
+=== Tests / Research ===
-==== Overview ====
+  * {{ ::technical_note._salt_water_testing.pdf | I. Milenkov, G. Walter, "Evaluation of the performance of electric motor and the effect of salt water on it.", Technical Note, Nov. 2020}}
-{{:waterproof_overview.jpg?400}}
+=== Austauschlager ===
-These are the sections to close on the fuselage.
+Der Motor ist außerhalb des Rumpfes und deshalb mit Seewasser in Kontakt. Die Kugellager können gegen wasser- und rostgeschützte Varianten getauscht werden. Markus hat bei einigen Motoren die Lager getauscht. Am Motor sind zwei Lager verbaut:
-==== Bulkhead to separate the motor ====
+  * Lager 1 ist ID=5, AD=16, H=5 (mm)
+  * Lager 2 ist ID=5, AD=11, H=5 (mm)
-{{:waterproof_bulkhead.jpg?400}}
+Die Tauschlager sollten möglichst aus VA Stahl und bevorzugt mit einer Dichtung aus NBR (2RS) statt einem Deckel (2Z) ausgestattet sein. Bei SKF gibt es ein [[https://www.skf.com/de/products/rolling-bearings/ball-bearings/deep-groove-ball-bearings|Suchformular]]. Folgende Lager könnten als Austauschlage geeignet sein:
-{{:waterproof_bulkhead_2.jpg?400}}
+  * Lager 1: [[https://www.skf.com/de/products/rolling-bearings/ball-bearings/deep-groove-ball-bearings/productid-W%20625-2RS1|SKF W 625-2RS1]] oder [[https://www.hug-technik.com/shop/product_info.php?info=p35735|ZEN S625-2RS]]
+  * Lager 2: [[https://www.skf.com/de/products/rolling-bearings/ball-bearings/deep-groove-ball-bearings/productid-W%20638%2F5-2RS1|SKF W 638/5-2RS1]] oder [[https://www.hug-technik.com/shop/product_info.php?info=p35772|ZEN S685-2RS]]
-==== Closing holes ====
-The so glued model had some holes to fill / close. I used thin plexi-glas. Best way to glue them was hot glue, as it can also fill little holes or irregularities in thickness.
-{{:waterproof_camera.jpg?400}}
-I used the same technique also on other parts.
-===== Sealing connections and small holes =====
-Using a good tape can close all kind of connections and other small or thin holes. I used "3m Blenderm" - a waterproof and flexible tape:
-{{:waterproof_tape.jpg?400}}
-One other option is hot glue - as in this example:
-{{:waterproof_hot_glue_single_holes.jpg?400}}
-===== Waterproofing the servos =====
-there are 2 interesting articles on Instructables on this topic:
-[[https://www.instructables.com/id/Water-proofing-a-Servo/|https://www.instructables.com/id/Water-proofing-a-Servo/]] [[https://www.instructables.com/id/Waterproof-your-servo-motors/|https://www.instructables.com/id/Waterproof-your-servo-motors/]] (if you want to follow this one, dont forget the glitter on your finger nails)
-. Make the housing waterproof
-* I used "Curil", a standard sealing compound. * Open the servo and put the sealant an all touching surfaces * also put sealant to the cable, where it leads through the housing
-{{:servo_sealant.jpg?400}}
-. Insert a O-Ring under the horn
-* remove the horn * add a 1mm thick o-ring * add some lubrication. I used "CRC Multilube" - attention - lubrication has to be compatible with the rubber of the sealant. Don't use silicon rings with silicon lubricant. * screw the horn back on
-{{:servo_oring.jpg?400}}
-==== Test it... ====
-- submerge in water while it moves - no bubbles should emerge
 ===== Waterproof capsule =====
@@ Line 74: / Line 36: @@
 {{:wiki:img_6a0ab1732ff3-1.jpeg?nolink&800|img_6a0ab1732ff3-1.jpeg}}
+===== Waterproof Block Diagram =====
+{{:wiki:blockschaltbild.png?nolink&}}