Re: [Paparazzi-devel] Mounting horizontal IR below the fuse?

[Maik Höpfel]

It should also be possible to cover the IR sensors with some special
kind of plastic. I'm quite positive that I've read about that on this
mailing list before, and the FMA sensors that the ArduPilot people
used to use are covered as well. If anyone has more specific
information, I'd be very interested to hear about that; we've been
thinking of covering the sensors as well. We'd like to be able to use
them in the rain and can't waint until the Paparazzi IMU/AHRS comes
around ;)

Regards,
Maik



2009/11/2 gisela.noci <address@hidden>:
> We also fly a 40 size trainer with a .55 glo engine. With the sensor mounted
> on a pylon on the 'windscreen', 5cm above the engine, it failed to work,; to
> much IR signature from the engine and wanted to pitch up....
>
> I have now mounted below the fus, below CofG more or less, and it works
> perfectly. We fly in the desert mostly here in Namibia, so have spring steel
> landing gear with about 70mm wheelbase width and 80mm fat foam wheels to
> land and takeoff on sand/gravel. Works very well, BUT... have destroyed 2
> sensor already from stones flung up by the prop hitting the IR window.
> Moving the sensor rearwards would help a little, since the stones velocity
> may reduce a little by then, but only a little.. Not the best solution
> under, unfortunately. We are a 60 size trainer now, with 75 engine, and I
> have fitted my sensors ( I made my own sensors, each separate,ie, one for Z
> and one each for pitch and roll) as follows - Pitch at left wing tip, roll
> on top of fus, just rear of wing trailing edge, Z facing up/down, thru fus,
> just rear of roll sensor. This works great, no oil on windows, no stones, no
> fuss!
>
> Have fun
>
> Joe
>
> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden
> ] On Behalf Of David Carlson
> Sent: Monday, November 02, 2009 12:00 PM
> To: address@hidden
> Subject: Re: [Paparazzi-devel] Mounting horizontal IR below the fuse?
>
> Also have had success with this configuration.  The only problem I see
> is for belly-landers, which should be obvious.
>
> To secure them, I generally take a piece of shrink-wrap just big enough
> to wrap around the  two sides without the picoblade connector, making
> sure to not obstruct the thermopile's window.  Then I use hot glue
> between the shrink-wrap and the (foam) airframe.  Works really well.
>
> Buzz
>
> Maik Höpfel wrote:
>> Hello Adrian,
>>
>> we flew a small Graupner Elektro Trainer S like this, worked just as well.
>>
>> Regards,
>> Maik
>>
>> 2009/11/2 Adrian Lauf <address@hidden>:
>>
>>> Hello all,
>>> Me again, hopefully I won't be pestering all of you too much longer with
>>> inane novice questions - thanks to all those who have been a tremendous
>>> help, couldn't have done this without you. My (hopefully) final question
>>> before I get into the air is how to best mount the horizontal IR board. I
> am
>>> flying with a large glow-powered plane, the Hangar 9 Alpha 40. It is a
>>> high-wing design, and has a front-mounted engine. The wing itself is
> quite
>>> large. The engine exhausts near the top, so because of heat interference
> and
>>> oil spew concerns, I was considering mounting the IR board *underneath*
> the
>>> fuse. From a directional standpoint, there should be nothing wrong with
>>> this, correct? The tricycle gear would give *plenty* of ground clearance,
> as
>>> I fly with belly-mounted cameras all the time. I think this would also
>>> somewhat solve the problem of the large wingspan interfering with the
> field
>>> of view, were I to mount it on top. Is there anything inherently wrong
> with
>>> doing so, before I drill into the underside of the fuse? Also, what are
>>> people using to secure the board? It's the new IR board design, purchased
>>> from Chebuzz. Thanks!
>>> -Adrian
>>> _______________________________________________
>>> Paparazzi-devel mailing list
>>> address@hidden
>>> http://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>>>
>>>
>>>
>>
>>
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