If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
|
Thread Tools | Display Modes |
#11
|
|||
|
|||
Digital meters 3
"Ian Mitchell" wrote in message ... wrote in message oups.com... I appreciated many freinds attend discuss digital meters. In fact, we are interesting in digital meters. First we know most of pilot liking analog meter with many friends help. I forwarded your replies to our engineer. Our engineer told me we should do two kinds of meter, one is flight meters, second is engine meters. Filght meter include: ALT, VSI, ASI, Horizon Gyro. Except gyro, these vales are showed in analog display digital. Engine meter: CHT, EHT, RPM, TEMP. PRESSURE,HOURS, FUEL CONSUME, VOLT. AMP. They are showed in numeric display digital. Just an observation, as a pilot, I can tell you that I generally am not interested in the absolute value of temp, pressure etc. What I need to know is that the reading is in the green arc, ie it's within an acceptable range. That to me represents the atvantage of traditional instruments over digital, I can tell at a glance in a rapid instrument scan what the current situation is. Another advantage is that I can do it with peripheral vision, and keep my attention where it needs to be, ouside the cockpit. The other thing I get with the old style analog meters is a quick estimate of "rate of change." In a quick glance at the gage I can see WHERE the needle is and if it is moving, how fast it is moving, and in what direction its moving. That rate information makes a great difference in my response to the meter reading! With a digital readout the lower order digits are often flickering. I can't tell how fast, or which way, or even if they are just jittering back and forth a bit with out concentrating my attention on the readout for several seconds. That is enough to totally blow my instrument scan and blow away my internal integration my data streams from my instruments. I know from experience that the worst thing I can do while flying on instruments is to focus my attention on any one instrument. I have to constantly compare the different gages that give me overlapping information for agreement. If any two instruments that give me the same information from different perspectives or techniques disagree, instantly my instruments are suspect and I have to cross check until I indentify which one is lying to me and then ignore it in my subsequent scan. If I fail to do that I will likely kill myself when the vacuum pump fails or when the power goes bye bye. I have had both vacuum and electrical systems fail more than once when flying in solid IFR but I have NEVER had both systems fail at the same time! That difference is why I am still here blathering on the internet! :-) Highflyer Highflight Aviation Services Pinckneyville Airport ( PJY ) PS: The Pinckneyville r.a.h. flyin is coming up May 19, 20, 21. Be there or be square! Email Mary at and let her know you are coming so she can arrange for the groceries. Saturday night dinner is steak, baby back ribs, or chicken breast. Let her know you preference. We are leaving town right after the flyin and don't want a lot of leftovers to deal with! :-) |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
About digital meters | [email protected] | Home Built | 9 | April 17th 06 04:18 AM |
UAV's and TFR's along the Mexico boarder | John Doe | Piloting | 145 | March 31st 06 06:58 PM |