Recent content by danja

Does this look more correct? With no camber, 6 deg angle of attack: With 4% camber, 6 deg angle of attack:

Well I might just be an idiot. I was trying to map X-Y coordinates into the Zeta plane to determine the pressures at those coordinates. What I should've been doing was just getting the pressures along the curve of the circle in the Zeta plane and then translating them back to X-Y space. I think...

Screen shots of what's happening: With no camber, 6 deg angle of attack: With camber of 4%, 6 deg angle of attack:

I'm having a bit of trouble with a homework assignment for a fluid mechanics course. I'd like to ask if my solution method is appropriate. The goal of the assignment is to determine the pressure coefficient distribution along the upper and lower airfoil surfaces and plot it (I'm using MATLAB for...

No requirements, but preferably from 1-3 degrees C at the worst.

Yea, well the reason is that I happened upon some thermocouples for free (well not free, but I was never re-imbursed for them as planned so after the experiment I kept them), and just want an easy way to use them. I am basically looking for a cheaper version of this...

Yea, however I am trying to get away without needing one of those meters because they are not so cheap. =) Just want to be able to use them reliably with a voltmeter or other meter without an ice bath for reference.

Hey, Anyone know where I might be able to get a thermocouple voltage compensator (an electrical "ice bath" circuit) for cheap or if I may be able to make one? For a T and/or K type thermocouple. I am looking in the range of $30 or less. Here is a description of what I'm talking about. Just...

Yep, thanks for the verification. Glad to have sorted out my terminology now! Also, I think it's tranny, not trannie.. =p Actually the reason I asked this question is I am working on a Simulink model of a motorized bicycle I plan to build, and when I put in a simulated hill to check the...

Alright, sorry to re-quote, but it seems you might be right. I thought the wheel torque dyno's measured referred to the torque output from the wheel in a specific gear. Apparently, that's not what it means. Wheel torque is the engine torque derived from force measured at the wheels, so it is...

I took it as the torque you might expect an average 1500 Kg car to reach at peak torque. It's not really based off a specific car, but I can tell you a lot of smaller cars don't go over that from the factory (as you can see from the integra, it is around 2/3 of that).

I had some trouble finding OEM curves, but for example here is the dyno from a stock older Integra. Little less than 1500 Kg, but the point still holds. http://image.importtuner.com/f/16847321+w750+st0/impp_0908_03_z+1993_acura_integra_gs+stock_dyno_chart.jpg Max Tq of 110 lbft (150 Nm). And...

Alright, I've re run this numerous times in my head, and on paper. It seems I must be missing something stupid here. Bottom line is, I am trying to calculate the amount of axle torque (post differential) required to stop a 1500 KG car from rolling down a 20 degree hill. Road to axle radius is...