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@@ -74,20 +74,22 @@ Here are the block diagrams of the planned AV3-L09 avionics system:
- Opal IMU
- Payload
-## AV2-L05
+## AV2-L05 ([[August 2005|news/2005-08-20]])
-AV2 was arguably the most sophisticated amateur rocket avionics planet for its time: an x86 flight computer running Linux and using WiFi for telemetry, a GPS, and an IMU. The avionics performed flawlessly, but was destroyed when the recovery system failed to deploy.
+AV2 was arguably the most sophisticated amateur rocket avionics planet for its time: an x86 flight computer running Linux and using WiFi for telemetry, a GPS, an IMU, an entire ground-based telemetry network, and even open source Java-based launch control and telemetry viewing system. The avionics performed flawlessly, but was destroyed when the recovery system gas generator failed to operate. The telemetry ground systems worked, but failed to record the flight video despite two redundant systems.
-### Flight system
+- [[MOPS520 586 PCI-104 Flight Computer|FlightComputer]] running Linux 2.4 off of a CompactFlash card
+- 2.4 GHz [[WiFi-based telemetry|WiFi]] power amplified under an amateur radio license ("ARRL 802.11b")
+- 16.8 V 4 Ahr [[Rechargeable Lithium ion battery pack|BatteryPackLv2]]
+- Custom built [[avionics module framework|AvionicsModuleLv2]]
+- Five [[PIC18F458 8-bit microcontroller "nodes"|CanNodes]] communicating over the CAN (Controller Area Network) bus.
+ - [[Amateur TV System|LvTwoAmateurTelevisionOverview]]: Broadcasts NTSC video with text overlay at 1.25 GHz.
+ - [[Avionics Power System|AvionicsPowerSystemLv2]]: power switches, battery and bus monitoring
+ - [[Inertial Measurement Unit: inertial sensors (also pressure and temperature sensors)|InertialMeasurementUnit]]
+ - [[Recovery Node|RecoveryNodeLV2]]: Battery backed up 2m radio receiver and pyrotechnic actuators
+ - [[Rockwell "Jupiter" GPS receiver|GlobalPositioningSystem]]
-- MOPS520 586 Flight Computer
-- [[Amateur TV System|LvTwoAmateurTelevisionOverview]]: Broadcasts NTSC video with overlay at 1.25 GHz.
-- [[Avionics Power System|AvionicsPowerSystemLv2]]: power switches, battery and bus monitoring
-- [[Inertial Measurement Unit: inertial sensors (also pressure and temperature sensors)|InertialMeasurementUnit]]
-- [[Recovery Node|RecoveryNodeLV2]]: Battery backed up 2m radio receiver and pyrotechnic actuators
-- TODO
-
-### Ground System
+There was also a sophisticated ground system to launch and receive telemetry:
- [[Launch Tower:|Lv2LaunchTowerElectronics]]
- [[Launch Tower Computer (LTC)|Lv2LaunchTowerComputer]]: A Linux-based x86 PC104 stack with Lucent Orinoco 802.11b card and CAN.
@@ -98,9 +100,15 @@ AV2 was arguably the most sophisticated amateur rocket avionics planet for its t
- [[Umbilical cord|Lv2UmbilicalCord]]: Connects LV2 to the electronics box. Provides shore power, includes rocketready relay interlock.
- [[Launch Tower Power System|Lv2LaunchTowerPower]]:Solar array, charge controller, and battery
+
+## L3 ([[September 2002|news/2002-09-22]]) and L4 ([[September 2003|news/2003-09-21]])
+
+These flights were airframe-only flights to test our new "LV2" class airframe. They used COTS amateur rocket flight computers to deploy the recovery system.
+
+
## AV1-L2 ([[October 2000|news/2000-10-07/]])
-This system was an upgrade to our AV1 system. We added a GPS receiver, commercially made PCBs, better batteries, and reworked the board. It flew successfully, and was the last of our 8-bit avionics systems as we realized it was time to seriously upgrade our system.
+This system was an upgrade to our AV1 system. We added a GPS receiver, commercially made PCBs, better batteries, and reworked the entire system. The ground station software was our first use of open source software. It flew successfully, and was the last of our 8-bit avionics systems as we realized it was time to seriously upgrade our system.
- 33 MHz PIC17C766 Microcontroller flight computer with 1MB external SRAM
- Upgraded 6 DOF IMU (12 bit ADC, better gyros)
@@ -108,9 +116,12 @@ This system was an upgrade to our AV1 system. We added a GPS receiver, commercia
- Rockwell GPS board
- 2m amateur radio DTMF-activated uplink for manual recovery system control
- First avionics system with a launch tower umbilical (LTU) cable including Launch Detect and "Rocket Ready" signal
-- Ground station was a Linux-based C telemetry viewer, our first use of open source software.
+- Primary Lithium battery pack
+- Ground station was a Linux-based C telemetry viewer.
+- Recovery system fired by flight computer
- See the [[project page|LV1/Payload/LV1b_Payload/]] for more information
+
## AV1-L1 ([[April 1999|news/1999-04-11]])
A new avionics system, based off a slightly more powerful 8-bit microcontroller and a dawning desire to understand rocket dynamics. In 1999, this may have been the first amateur rocket with a 6 DOF solid-state IMU. The PCBs for this system were design on CAD and hand-etched at a volunteer's house. Flew successfully.
@@ -121,9 +132,12 @@ A new avionics system, based off a slightly more powerful 8-bit microcontroller
- 2400bps digital data downlink on ATV transmitter sound channel
- 2m amateur radio DTMF-activated uplink for manual recovery system control
- Pressure and temperature sensors
+- Primary Lithium battery pack
- Ground station was a DOS-based laptop
+- Recovery system fired by flight computer
- See the [[project page|LV1/Payload/LV1a_Payload]] for more information
+
## AV0-L0 ([[June 1998|news/1998-06-07]])
Our first avionics system, based on a small 8-bit microcontroller soldered on a protoboard. Flew successfully, except for a short in the telemetry data downlink.
@@ -131,7 +145,9 @@ Our first avionics system, based on a small 8-bit microcontroller soldered on a
- PIC16F84 microcontroller flight computer
- Single axis accelerometer
- 400 MHz amateur TV downlink with 300 bps telemetry on the audio channel
+- Primary Lithium battery pack
- Ground station was a DOS-based laptop
+- Recovery system was a standard amateur rocket motor-based gas deployment
- See the [[project page|LV0]] for more information