Matronics Email Lists

One thing about "strength" verses mix accuracy is the current Europa design does not have us building many (or any?) strength-critical components.

Fred F.

Ferg originally said he was using 6 conductor cable. That would mitigate the vibration flexing from your otherwise very good point.

Yes, but I'm picturing the connections to the individual engine ...

Ferg, why y'all usin' #22 wire in a vibrating environment? Without special care in terminating the wires, they can eventually fracture. I don't think I've seen a production A/C with #22. They use # ...

Any engine instrumentation we buy has to be compatible with the Rotax temp and pressure senders.

Fred F

Why is any technical article found on the internet authoritative? Why wouldn't the FAA care enough to fix their Regs? People die when airplanes break apart.

Fred F.

I used FL 450 only to exaggerate the raw effect of reduced aerodynamic pressure, and other things happen with really high performance aircraft way up there. However, FAR Part 23 is clear that Vne is ...

Wait a minute here. The quoted cite sounds authoritative, but U.S. Regs for production aircraft state that Vne must be marked on the ASI.

If we got enough of a turbocharger to get to like FL450, w ...

I don't understand this one. How does the PFA know to what speed you did the test? If there's no enforcement mechanism, this is ludicrous. I cannot think of any gov't requirement here where we must ...

Just go to faa.gov, and in the search box, type: AC 21-34.

F--

In the interest of adding my amateur science here [ Wink

], I have this digital, infrared temperature reading, gun thingy which is remarkably accurate. Have also an SUV with much sculpting on the body ...

Re the Archer dipole, there is nothing theoretical to suggest it should work any better. Like any dipole, it should be more sensitive to nearby metal elements to degrade performance (including its ow ...

The radiating pattern on a 1/4-wave monopole (the common xponder stubbie thing, or whip-type comm antenna) is a half-donut. Sliced laterally, so each half has a hole.

See www.linxtechnologies.com ...

RF energy harms body tissue by heating it, as in a microwave oven, which is continuous energy. However, my oven on the defrost setting zaps the food only periodically, like on for X seconds and off fo ...

...(ie: move it closer to the cockpit) - unless you are planning to have kids !!!!!

Remember that unlike a comms radio a transponder transmits continuously so the exposure to radiation is grea ...

Excuse me, but raw data re Europa accidents is freely available from www.aaib.dft.gov.uk/publications/bulletins.cfm (vastly most of the cases) and from http://ntsb.gov/ntsb/query.asp#query_start -- bo ...

In the USA the number of accidents to builders first flighting is depressingly high, (not just Europas) we spend all our waking hours thinking and doing the build and tend to neglect our flying skills ...

Regarding the size of the ground plane for a transponder antenna.... Can someone tell me how much antenna degradation I can expect by being off by .18"?
I don't think the effect can be compute ...

2) Re Airventure. Fred, I don't know when you were last there, but I go every year. I grew up in NYC and live there now, so I know a million people at a time when I see them. Osh on a good day does ...

...and in the nationally distributed "Trade-a-Plane" magazine which is distributed to about 800,000 people at Sun N'Fun. Not a single telephone call of inquiry.
Sorry, but there's no 800,0 ...

What is the voltage drop you expect in #4 vs. #2 wire for a 6' run (out and back) while flowing about 250 amps?This is apparently about a Rotax 91x engine, though? The starter relay supplied with my ...