Differences

This shows you the differences between two versions of the page.

--- h2o_rocket:h2o_rocket [2020/02/01 11:02] – midiwidi
+++ h2o_rocket:h2o_rocket [2023/07/22 11:50] (current) – [Date TBD - launch series of the upgraded water rocket v2.6] midiwidi
@@ Line 3: / Line 3: @@
 |{{:h2o_rocket:state_diagram.png?800x654|pic can not be displayed}}|This is the state diagram of the water rocket.|
-<font inherit/inherit;;inherit;;#ffffff>first launch</font>
+===== 19.01.2020 - First launch of the upgraded water rocket v2.0 =====
-<font inherit/inherit;;inherit;;#ffffff>19.01.2020 - launch 01</font>
 {{youtube>g4kU_LOwwg0?large}}
-.01.2020 - launch 02
+Many improvements were made including
+  * New fin design (mechanically much more robust)
+  * Electronics payload compartment accommodating, accelerometers, gyroscopes, magnetometer, barometric pressure sensor, 2MP camera, LiPo battery and charge controller, a servo and a WiFi enabled ESP8266 32bit Microcontroller acting as the on-board computer
+  * Spring loaded parachute, deployed at apogee using a servo (apogee is detected via the rockets attitude determined from magnetometer data)
+===== 07.06.2020 - launch series of the upgraded water rocket v2.5 =====
+{{youtube>8ACIOvbvEds?large}}
+<font inherit/inherit;;inherit;;#ffffff>The changed to the v2.0 model included</font>
+  * New 30'' nylon parachute (the bin liner version didn't support the acting forces)
+  * Rubber band shock absorber in the parachute harness
+  * Adjustments to the parachute release point
+  * Improvements in the on-board software
+  * changes to the nozzle design as the epoxy didn't withstand the pressure
+  * rubber gaskets were added to the tornado couplings between the sections
+  * added another bottle section (new volume → see below)
+  * adjustment on the launchers nozzle latch to support the new nozzle design
+  * repairs of damages due to rough landings from previous flights
+  * higher pressure at launch up to 110 psi
+__Datasheet__
+  * total volume: 4.73 l
+  * empty weight: 426 g
+  * parachute diameter: 760 mm
+  * nozzle diameter: 9 mm
+  * height: 1320 mm
+===== Date TBD - launch series of the upgraded water rocket v2.6 =====
-~~~DISCUSSION~~~
+The changes planned include
-\\
+  * increased nozzle diameter of 10 mm (drilled open)
+  * Improvements in the on-board software
+  * increased sensor data rate
+  * replace RGB camera which was read by the onboard computer directly with a standalone HD camera (including SD card - just activated by the onboard computer) which saves computational resources
+  * Launch tube