| Black Magic releases third generation flight computer |
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| 2009 Archived News by Black Magic Missile Works | |
| Wednesday, July 01, 2009 | |
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General: CPU Module UFC-3-CPU: Telemetry Module UFC-3-TEL-1 (North America): Telemetry Module UFC-3-TEL-2 (Europe): Other Modules: * Current UFC-2 users of the 900 MHz. Telemetry, 5 fps GPS and MicroStream Inertial Sensor (not shown) may upgrade to UFC-3 modules at the cost of the bare module only (approximately $125 per module) User Configurable System and Fully User Programmable Flight Control A simple user created script (text file) provides complete flexibility in defining automated system preflight checks, preparation and flight operations. Any connected sensor can have its data recorded on board at up to 1,024 samples per second and transmitted via long range telemetry for real time tracking and control. Sensors include Accelerometers, Altimeter, up to 32 analog inputs supporting a variety of sensors, transducers and thermocouples (user defined scaling for data presentation), GPS data, 3-Axis Inertial Sensor (Roll/Pitch/Yaw position, rate and acceleration), digital inputs/outputs and system events/actions. Timing and rates of data logging is independently user programmable for onboard memory and telemetry. Any sensor can be automatically checked for function or input value (and some may be automatically calibrated) as a part of pre-flight preparations. Any failure of a system check will abort the launch sequence. User defined complex events can cause any action(s) the system is capable of with optional time delays during flight. Currently system configuration and control are based on a menu driven terminal I/O system (terminal emulator such as HyperTerminal or Procomm); data reduction and presentation are performed using Microsoft Excel (templates are provided). A Windows Graphical User Interface (GUI) is under development and will made available free of charge to current system owners when available. Black Magic Missile Works is constantly developing additional products (Isolation Module for redundant systems and Digital Flow Control Module for liquid and hybrid motors are in development) as well as fully supporting current users of the Second Generation UFC-2 controller. Custom modules, software and applications assistance are available at additional cost. Contact: Document: Black Magic Missile Works UFC-3 Flyer (247KB Adobe PDF) |
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I can see were if you were to use a single antenna and it rotated the antenna away from you the signal could be attenuated. So, could you put two or three antennas around the airframe and connect to the transmitter? Considering the frequencies/wavelength woudl you have a phase cancellation issues with multiple antennas?
Yeah, you might have some phase problems, and at the very least, you'd definitely have a complex impedance matching situation (I started to say "complex impedance matching problem", but until you put it onto an analyzer, there's no easy way of knowing). But, your idea is a good one - I've used the copper foil sold for window alarm circuits in the same way - it's very thin and makes a good antenna.
What about a very slow twist spiral around the tube? Maybe two total revolutions? I'm RF ignorant so it might be a totally daft idea.