Undercarriage Indicator

10 Aug 2016 11:47 #30379 by Algernon
As we've established the gear retraction makes no noise, I figured I'd better get an UC indicator into the cockpit before the release on Sunday. I found this on Google Images - is it correct for our T5?


Attachments:

Please Log in or Create an account to join the conversation.

10 Aug 2016 12:19 - 10 Aug 2016 12:36 #30382 by ScottBouch
Yes that's the one.

Funnily enough, I've just spoken about the operation of this indicator in the other undercarriage thread!

from XS458:


In your picture what you're looking at is the bulb carrier, the really small knob in the centre is the screw that holds it into the body of the indicator unit, but for the sake visuals, it has everything you need..

Is this indicator already modeled in your Victor?

Any chance of interfacing it like you did with the radio controller so that either a real one, or a mock built from LED's could be used?

Cheers, Scott.
Attachments:

Please Log in or Create an account to join the conversation.

10 Aug 2016 12:38 #30383 by ScottBouch
Here's the circuit diagram showing what controls the lamps in the indicator.




I may find my previous comments on which lamps light exactly when may need revising once this is studied.

Cheers, Scott
Attachments:

Please Log in or Create an account to join the conversation.

10 Aug 2016 13:13 #30385 by Algernon
That's a great resource, I was just wondering about the actual workings. I'll take a couple of Ibruprofen and get into that ;)

Please Log in or Create an account to join the conversation.

10 Aug 2016 13:39 - 10 Aug 2016 14:32 #30388 by ScottBouch
Done some figuring out... and then found a decent circuit description in another book!

Main legs:
Legs locked down = Greens
Legs in transit = Reds
Legs locked up, and doors shut = no lights

Nose leg:
Leg locked down = Green
Leg in transit = Red
Leg locked up= no lights

Note, the Change Lamps selector on the front (with the white dots) allows you to switch between the two sets of greens in case you suspect a bulb is blown. Only 3 of the 6 greens will light at once.

The night / day selector dims them, I think optically rather than electrically.

Cheers, Scott

Please Log in or Create an account to join the conversation.

10 Aug 2016 14:29 - 10 Aug 2016 14:30 #30391 by ScottBouch
and here are images of the Starboard one.





Note how the one you found by googling has been badly sun faded, they start of anodised black, and get faded to that brown-ish / orange colour.

This is why the old Flightgear Lightning F1A wrongly ended up with an Orange trigger and brake handle on the stick, they should have been black, but the model was designed from a photo of the real thing that had been badly sun faded over the last 50 years or so.

Thanks, Scott.
Attachments:

Please Log in or Create an account to join the conversation.

10 Aug 2016 15:07 - 10 Aug 2016 15:10 #30394 by Algernon

ScottBouch wrote: Is this indicator already modeled in your Victor?

No, something that was on my to-do list. Maybe the same one will do for both...

Any chance of interfacing it like you did with the radio controller so that either a real one, or a mock built from LED's could be used?

Yes absolutely, should be pretty simple. How would you imagine the hardware end to work? Six digitals on an Arduino board?

Please Log in or Create an account to join the conversation.

10 Aug 2016 15:10 #30395 by Algernon
I can't find the location of the port one... :(

Also, I can't find a decent picture to use as a texture. That could be irksome...

Please Log in or Create an account to join the conversation.

10 Aug 2016 16:26 - 10 Aug 2016 16:35 #30405 by ScottBouch

Algernon wrote: I can't find the location of the port one... :(

Also, I can't find a decent picture to use as a texture. That could be irksome...


Just to the left of the left persons left knee!

It may be time to hit Google.. luckily these same indicators are used on a few military aircraft from the 50's / 60's / 70's, so after trawling through a few cockpit photos, you may find something...

Yes, for the interface, 6x I/O will be great, 3 Red, 3 Green.

Thank you, Scott.

Please Log in or Create an account to join the conversation.

10 Aug 2016 16:34 - 10 Aug 2016 17:48 #30406 by ScottBouch
Attachments:
The following user(s) said Thank You: Algernon

Please Log in or Create an account to join the conversation.

10 Aug 2016 16:49 #30408 by Algernon
Yep, I have managed to get something out of that. Thanks! :)

Please Log in or Create an account to join the conversation.

10 Aug 2016 16:58 #30411 by ScottBouch
Great!

And to think I used to have one and gave it away, along with several other items... idiot.

Please Log in or Create an account to join the conversation.

10 Aug 2016 17:42 #30414 by ScottBouch
Attachments:

Please Log in or Create an account to join the conversation.

10 Aug 2016 18:04 - 10 Aug 2016 18:18 #30415 by ScottBouch
Out of interest, I've just been going through some of my CockpitFest photos:

Here it is in a Canberra B2.


And JP Mk3:

Attachments:

Please Log in or Create an account to join the conversation.

10 Aug 2016 18:14 #30416 by StuartC
we have a model for it. Its in the Hunter F6
The following user(s) said Thank You: ScottBouch

Please Log in or Create an account to join the conversation.

10 Aug 2016 18:33 #30419 by Algernon
I thought I'd seen one somewhere...

Please Log in or Create an account to join the conversation.

10 Aug 2016 19:54 #30421 by Algernon
The following user(s) said Thank You: ScottBouch

Please Log in or Create an account to join the conversation.

11 Aug 2016 08:11 - 11 Aug 2016 08:23 #30434 by ScottBouch
My god, that was sexy!!

The sequence is just what I'd anticipated! great job!!!

One improvement, the three greens should appear so that they are equally spaced from one another, like this:




The change lights selector (withthe white dots) selector changes which set of bulbs are in use, they are in the following groupings:

Left upper
Bottom left
Right lower

And:

Left lower
Bottom right
Right upper

The result is the top two greens always look wonky!

the above image from my video here:


This should be the same for all aircraft that use this indicator, so the Hunter F6 may need revisiting if the logic came from there.

Cheers, Scott
Attachments:

Please Log in or Create an account to join the conversation.

22 Aug 2016 15:03 #30780 by ScottBouch
Attachments:

Please Log in or Create an account to join the conversation.

Time to create page: 0.559 seconds
Powered by Kunena Forum

PM Mailbox

You are not logged in.