Hi all,
I am looking into an application of an "unfortunate" square-peg-in-a-round-hole. I need to fit a 40-mm square extrusion into a 50mm ID bearing.
The application is low speed, <500RPM with low loads (robotic arm).
I am looking into turning (lathe) the square 40mm extrusion so that I end...
I am doing both pitot and AOA in a single probe. AOA will be measuring the pressure difference between the bottom and the top probes (known as a smart probe).
That's good information for the edge effects, I was just going to bevel the edges of the holes but I'll take a look at detailed...
I never thought of using a tube insert, that's a really good idea. I guess I would bond it in? Or simply heat the big tube, chill the small one and insert it with a small interference fit?
Testing: intially calibrated in freestream (ie: outside) and then in a wind tunnel.
No it's for AOA probe use.
NACA report 1364 shows that small pressure ports are the most effective (0.020"-0.030" generally). That's tiny, I know and unfortunately I won't be able to do it on my lathe, I'll need to use EDM drilling.
Unless you have experience otherwise, that using a small...
I found something:
http://www.beswick.com/products/product_details.php?pid=8
The flow-through size is a bit bigger than I hoped but I think it'll be OK.
The pressure will be low (total and dynamic pressure measurements), my sensors are capable of 0-30psia max.
I have found some threadable ports but they have M5 threads, that's too big. I was hoping for M3 (or similar imperial size) with 0.025" holes.
Hi all,
I'm looking for a threadable pressure port, the smallest possible. The pressure sensing and "working" lines have very small diameters (~20 thou ").
I need the sense line to be 90 degrees to the "working" line I'm wondering if I have to use something fairly large or is there something...
Hglr, thank you very much for your reponse. I don't have access to the Airbus spec however the DEI part information does mention the spec and its tolerances.
We are aware of the Do-160 reqs.
Thanks again!
Hi all,
I'm wondering if there is a standard specifying voltage levels for aircraft use of Discrete I/Os?
IE: Gnd/Open would be:
gnd, logic 1
open, logic 0
logic 0 lower limit: 12VDC
logic 0 upper limit: 48VDC
logic 1 lower limit: -2VDC
logic 1 upper limit: 5VDC?
Same question for 28V/Open...
Hi guys,
I'm trying to find a single slewing ring bearing (apprx 400-500mm OD), internal gear. Everytime I call anywhere they're asking for 4-6 mnths after payment (!!). Is there anywhere (on the web, or my local bearing shop?) I could find this in stock somewhere?
The application is a robotic...
Throttle response, keeping everything in the engine the same (interial effects such as flywheel), is a function of 'throttled air', ie the volume of air between the throttle plate and the valve. This is reason that individual throttle bodies have better throttle responses when compared to a...
Hi there 'team cowie'!
Nice R32 you got there.. At 160mph there is definately some aerodynamic effet coming into play. A completely flat floor (in lightweight fiberglass or other) would definately be a start. In addition, since you're only running the car in drag configuration, you should get...
Hi Kieran,
You can also add counter-rotating tip-mounted props to reduce vortex flow.
Here is a good article from one of the fathers of winglet design.
http://www.mandhsoaring.com/articles/Winglet_Design.pdf
