|
|
| Re: TA is obsessed with CBTC, and ''New'' tech for no reason. (581293) | |||
 |
|||
| Home > SubChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: TA is obsessed with CBTC, and ''New'' tech for no reason. |
|
|
Posted by Stephen Bauman on Wed Mar 5 19:37:34 2008, in response to Re: TA is obsessed with CBTC, and ''New'' tech for no reason., posted by Jeff H. on Wed Mar 5 19:23:05 2008. Agreed radar is not accurate to laboratory standards, but 10% sounds like a high number.Take out your CRC. cos 39° = 0.77715, cos 45° = 0.70711, cos 51° = 0.62932. I can't imagine that vertical curvature would have much of an effect over such a short horizontal distance...extreme VC radii are on the order of 500'. I agree. However, I don't know where they are aiming the Doppler. If it's close to the vertical distance, then angular alignment is a problem. If it's far out ahead, then vertical curvature becomes a distinct problem. Agreed radar is not accurate to laboratory standards Was running a tachometer off a rotating shaft ever considered? You calibrate it to a full wheel width. As the wheel wears the speed reading increases, so it's still safe. If there's an accident, then measure the wheel diameter. |
|
|
|