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This is the CP-1252/ASN-128 Navigation Computer Display.  The NCD was originally designed for Doppler  navigation, but will work in my application. I have reprinted the Analysis of this from my Wordpress Blog (22Apr2011)   The Analysis:  The NCD is comprised of 4 groups: Display, Keyboard, Rotary Switches, and Thumb Wheel Switches.  The Display is comprised of 4 16-segment and 13 7-segment PinLite lamps, and two LED's.  The keyboard is comprised of a 10 key number p ...
Vybrid controller solutions are built on an asymmetrical-multiprocessing architecture. The other night I went to the Avent/Freescale Vybird roll out, I figured that since it was taking place at a bar, I could score a few beers, and get some info. We to my supprise I won is the TWR-VF65GS10 (CPU), TWR-SER, and the TWR-ELEV. The TWR- parts are parts of a tower system.  The CPU card has two processors, an ARM® Cortex™-A5 and Cortex™-M4. The A5 comes with a Linux distro on a S ...
There are many types of synchros, Rx, Tx, and Resolvers. But what you have to remember that they are all just motors. As you can see this is  really just  a 3 phase motor, that is the three (3) Stators, are 120 degrees apart. But you ask what is the Rotor winding for? Well if you look at the picture of your cars alternator with out the diodes it kind of does the same thing as the Drive winding on the alternator. So if you took the diodes out of the alternator, and you put a 400 Hz sine ...
Remember when I was talking about Protocols and the RSS? Well then this will fit right in.   The Analysis: First we have to find all of the I/O in the Gables G-1981 ATC Transponder Panel and find out what they do. First a little background about ATC Transponders: "is an electronic device that produces a response when it receives a radio-frequency interrogation. Aircraft have transponders to assist in identifying them on radar. Air traffic control towers use the term squawk when they are as ...
Gees, Last month I sent in an entry to the "Why is it Great to be an Engineer?" So I entered the old tale of the conversation that God and the Devil had one day, and it goes like this, to my recollection:   One day God called up the Devil, and asked what was going on down there? The Devil replied: "We got this engineer and he put in central air, flush toilets, and elevators". And then God said: "And just where did you get this engineer?" The Devil replied promptly:"In the last shipment of c ...
For the past few years, hey its been more like a decade. I have been working on an experimental aircraft the Phoenix2000 which was to have flown in, yup you guessed it, thirteen years ago. Well we can all dream a little. In my currently reduced circumstances I can not build the airframe, hey there is only so much crap you can get into a two bedroom apartment. So a few years ago I decided to write a simulation of the aircraft. As it turns out building the plane is much easier than getting all th ...
If you can remember last time I said that I would describe the Control program running on the Linux box. Well its rather simple once you understand the signal(2) command. This is the mechanism which receives the interrupt and then sends it the right handler or function.   This diagram is a simplified block diagram of RadioControl running on the LinuxPc. So lets assume that the pilot changed the frequency on the Radio #2 on that Gables head. DATA TO RadioControl from the Slave The Sla ...
This is a copy of Scotts article that I found the picture of so called good soldering technique published in Import Tuner:   The most fundamental skill needed to assemble any electronic project is that of soldering. Basic soldering is a skill that's easy to learn and not too hard to master but misconceptions on the proper procedures also includes many individuals having no clue on where to start. Soldering is accomplished by quickly heating a metal or metallic alloy to join metallic surfac ...
School? I could have called it Soldering 101, or Soldering For Dummies, but hey what do we do when we need to learn something that is a skill?, Well we go to a school. The word school is just a formal place of learning. So why do we need school for soldering There are a few reasons: You need to learn the best practices. You need to learn what solders to use and not to use. You also should understand how not to solder and why. And finally, you should understand the tools you need.   O ...
Protocols again? Are we ever done talking about protocols? No not really. And BTW this is really RSS version 2!  RSS v1 can be found on my other wordpress blog. This version eliminates most of special hardware and its bus and chassis. Most radios heads can be handled by a Arduino Mega256 as it will handle two radios or that is one radio head. If the Mega256 can't handle the job I can then use the Stellaris Launchpad from TI.    We will use one of my Gables G-3717 Dual Nav Head ...
Ok so what the heck is a RSS? The RSS is a central location in the simulation for all of the radio stuff. The Analysis NexGen can handle any type of radio interface, but not limited to ARINC-410, ARINC-429, MIL-STD-1553, or any thing else you can dream up ie. Sub Space Radio in Star Trek. The 5 in 1 pictured on the right is a ARINC-410 head, they are cheap and plentiful on eBay. Radios with dials general fall into the other category of other ie. you are on your own.  The ADF pictured on ...
Dah Rules! The selected processor must support all of the I/0 natively ie. no I/O Expanders. There are more out there, but I own these, with the exception of the Pi. The processors to be in the selection are: Ardunio Duemilanove Ardunio Mega TI Stellaris Launchpad Raspberry Pi Beagle Bone The Solution must be integrated with the Radio SubSystem or RSS. There must be two sets of protocols developed. Between the Control Head and the embedded processor. Between the embedded processor and ...
The Plan Continued. We need to pick a embedded cpu. The requirements are:   It must handle all of the GPIO (see part 1 for the I/O Table), or about 20 pins. It needs a USB interface for a data link to talk to the host. It needs to generate the BFO signal. It needs a PWM output to drive the meter. It needs to have a protocol designed for it. But I has to fit in to the Radio SubSystem or RSS architecture. We need to design a interface card. It should have a relay for the Dial La ...
.This is the ADF Control Head that I chose for my project.  It is a Collins 614L-8. they are plentiful on Ebay The Analysis    The Unit is tuned via a 400hz syncro transmitter. So it looks like I will have to find a replacement for the synchro.  The Loop Switch in the upper left must be rewired and the switch logic for the Band Selector Switch behind the Tuning Knob seems ok, but that will have to be verified. The Gain Control is just a 5k pot,  and the Function Swi ...
Do you remember I talked about the Aircrafts Frame of Reference? Well I just reprinted it here if I slipped your mind. And I described it as a  3-D Cartesian (orthogonal right-handed) coordinate system (x, y, z), which is centered (origin) at the rear of the aircraft where: ROLL-axis passes through the propeller and tail. (Positive to the nose) PITCH-axis passes though wing tip to wing tip. (Positive to right wing) YAW-axis is a vertical axis, and is perpendicular to both the ROLL-axis ...