Asas

[duncan1297]

I was wondering if you could make a computer system to work like an asas?

Also if there would be a point

[Themohawkninja]

Something tells me that the constant rapid movement of the parts would create a very unreliable system, but the general concept of a computer system that constantly moves control surfaces to compensate for course deviations shouldn't be too hard I would think. Isn't that in modern jet planes, so they fly straight with the least possible human interaction?

[Dkmdlb]

I was wondering if you could make a computer system to work like an asas?

These exist. Autopilots.

Also if there would be a point

Yes. There would be a point - to do the same thing ASAS does now.

[Kaleb]

1) Get a computer

2) Install and play KSP

3) Congratulations! You have just made your computer work like an ASAS!

4) ???

5) Profit!

[Morty_jhones]

An ASAS unit is two large weights on a slide on a swing arm. two electric motors pull the weights back and forth while another motor spins the whole lot like a top. the idea is that it works as a stabilizer shifting the center of balance of the rocket slightly to shift momentum. is it very affective.

[olex]

Absolutely. Closed-loop control systems are exactly this - computers controlling air- and spacecraft, stabilizing them in flight. You can find them anywhere these days, from space rockets to airliners to even model airplanes and multicopters (the latter actually require constant computer stabilization to even fly).

duncan1297, with the forum status of "RC Pilot" you should know that these systems are readily available for R/C airplanes Google "ArduPilot Mega" for an example.

Edited July 13, 2013 by olex

[Galacticruler]

An ASAS unit is two large weights on a slide on a swing arm. two electric motors pull the weights back and forth while another motor spins the whole lot like a top. the idea is that it works as a stabilizer shifting the center of balance of the rocket slightly to shift momentum. is it very affective.

That is SAS, ASAS is basically a guidence CPU in control of control surfs and SAS units.

[Nuke]

Absolutely. Closed-loop control systems are exactly this - computers controlling air- and spacecraft, stabilizing them in flight. You can find them anywhere these days, from space rockets to airliners to even model airplanes and multicopters (the latter actually require constant computer stabilization to even fly).

duncan1297, with the forum status of "RC Pilot" you should know that these systems are readily available for R/C airplanes Google "ArduPilot Mega" for an example.

im actually somewhat interested in building one of these myself. i already got the 10dof imu, arduinos, mcus, board etching skillz, and an rc heli. but im to lazy to figure out all the maths.

[Galacticruler]

Google is thy friend.

be friendly.

[Nuke]

its not the maths, its the integration. i know enough linear algebra and trig to get by, then you have filtering algorithms (ive tried several), physics (good enough here), neumerical stability (hint: you dont have an fpu, but i know fixed point). the problems are mind boggling. i get hadaches just thinking about it. big coding projects like this never get done, ive got 3 game engines, countless other slabs of code that sit on my drive and are never done. this would just be another one of those.

Edited July 13, 2013 by Nuke

[olex]

im actually somewhat interested in building one of these myself. i already got the 10dof imu, arduinos, mcus, board etching skillz, and an rc heli. but im to lazy to figure out all the maths.

Do yourself a favor and don't try this out on a heli until you are 100% sure it works. Helis are the most dangerous sort of flying R/C vehicles (with a possible exception of rockets). Start with something simple like a powered glider (EasyStar/Bixler type), that is mostly stable in itself and can easily be controlled manually if an override is required. A heli, save for the tiniest sizes (100/150) has a lot more of a damage potential than planes and even multirotors, due to the sheer amount of kinetic energy in the single rotor.

[Nuke]

thats why ive nicknamed my chopper the decapitron. its a chinese made trex 400 clone. it came with plastic linkages and tail but i replaced them with aluminum bits as they broke. and then i swapped out my fiberglass blades with carbon fiber blades. only other thing she needs is a new battery and the autopilot board (which i am designing on eagle cad).

at first i will just stick to telemetry, which i will output to a monocle hud of my own design. mount an lcd screen at a 45 degree angle to a piece of dark plexiglass, makes a really good hud. i havent actually built it as i dont have an appropriately sized display (i saw a small, bright, oled display on ebay that will work quite well), but i know it will work. just knowing how level i am and my heading will help me fly it a little better. i wont have to break eye contact to look at a screen.

i was looking at rf modules, seen a long range nRF24L01+ based radio with a 1000 meter range and a 1-2 megabit data rate (though i will probibly run it at a lower data rate to play it safe), and about $20 each. i have the much cheaper $2 version that only does about 10 meters, which i got for surface r/c applications. i looked at xbees and other radios and i didnt like them, xbee in particular has too many pins, where as a nordic only needs 7 (its an 8-10 pin header, but only some of them are connected), and is a lot smaller and lighter of a module, and has a very easy to use library. initially this will be a separate link from the control radio, and then later on (when i verify reliability) i will send the control data though that link as well. i still want to fly it mostly on manual and have the autopilot try to level out and hover if i flip a panic switch. its one of those big long term projects (which i never finish).

Edited July 13, 2013 by Nuke

[Whirligig Girl]

ASAS unit costs 1,000 dollars or so in game, fits in a huge case with a 1 meter diameter, and yet it is but an extremely buggy and glitchy function in a 20 dollar game created by an Indie Game developer.