R-DAS

AED R-DAS CLASSIC FLIGHT COMPUTER VISUAL GUIDE

The following pictorial guide, provides an overview of where the main features on the AED R-DAS Classic circuit board are located.


R-DAS Classic Main Power Switch

R-DAS Classic Beeper - The R-DAS Classic Beeper is a piezoelectric transducer type beeper.

R-DAS Classic Main Output Terminals - these 2 terminals are used to connect an igniter which initiates main recovery deployment. The terminal screws are unscrewed with a flat blade screwdriver, the igniter wires are placed into the terminal blocks, and the terminal screws are screwed tight.

R-DAS Classic Drogue Output Terminals - these 2 terminals are used to connect an igniter which initiates drogue recovery deployment. The terminal screws are unscrewed with a flat blade screwdriver, the igniter wires are placed into the terminal blocks, and the terminal screws are screwed tight.

R-DAS Classic J1 and J2 igniter Current Jumpers - these jumpers enable the current through the drogue and main igniters to be limited. When no jumper is attached, a regulated current of 1 Amp flows through the outputs. When a jumper is attached (i.e. the connection is shorted), the current flow is not limited, and more than 1 Amp can flow through the terminals (the only current limits being set by the resistance of the igniter and ignition circuit).

R-DAS Classic J4 jumper (breakwire) - the R-DAS Classic J4 jumper is used to enable or disable the breakwire triggering method instead of the G-switch triggering method. With standard G-switch triggering, a jumper is connected to J4 (i.e. J4 is shorted).

R-DAS Classic CPU - the CPU used to power the R-DAS Classic is a Philips 80C522 CPU. The CPU is clocked at 11.0952 MHz.

R-DAS Classic EEPROM - the R-DAS Classic EEPROM is a removable 512 kB Electrically Erasable Progammable ROM. The use of removable EEPROMs allows several launches with the same R-DAS whilst just removing an EEPROM from the R-DAS and placing another one in its place between launches. This also allows different configurations to be loaded onto different EEPROMS.

R-DAS Classic Pressure Sensor - The R-DAS Classic Pressure Sensor is a Motorola PMXS4100A, an 8-pin, surface mount pressure sensor. The MPXS4100A has a range of 20 kiloPascals to 105 kiloPascals, and a resolution of 0.09 kiloPascals.

See Also

Hybrid Rocket Science, Hybrid Rocket Help Clinic, Amateur Hybrid Motors, Amateur Liquid Rockets, Guidance, Gimballed Motors, Launch Controller, UK Rocketry Vendors, UK Rocket Groups, UK Space Organisations