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Search: Posts Made By: jmelson
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15th Feb 2021, 16:49
Replies: 22
Views: 11,363
Posted By jmelson

Either the people who sent this got incredibly...

Either the people who sent this got incredibly lucky, or they had real-time video from the drone, to steer it to a target. Anybody know? If they had real-time video, then the controller/pilot must...
25th Jan 2021, 17:25
Replies: 64
Views: 36,363
Posted By jmelson

vikingivesterled Resolvers have been used in...

vikingivesterled

Resolvers have been used in aircraft systems for MANY years, and they are used specifically because they are VERY reliable. If two resolvers are used, then the failure of one can...
11th Jun 2020, 02:00
Replies: 18
Views: 4,127
Posted By jmelson

And, it is now showing up in the NTSB. There...

And, it is now showing up in the NTSB. There does seem to be a lot of scatter in the parts of the plane, but not so much as to point to an in-flight breakup. Not quite sure how to interpret that.
...
9th Jun 2020, 16:23
Replies: 18
Views: 4,127
Posted By jmelson

A member of a college fraternity organization. A...

A member of a college fraternity organization. A fairly big thing on some US college campuses.

Jon
9th Jun 2020, 01:21
Replies: 18
Views: 4,127
Posted By jmelson

Here's a link that has some more info on the...

Here's a link that has some more info on the people and the trip they were on :
ttps://fox2now.com/news/illinois/chesterfield-native-among-4-killed-in-small-plane-crash/

Jon
7th Jun 2020, 17:35
Replies: 18
Views: 4,127
Posted By jmelson

No, I believe it was reported they were leaving...

No, I believe it was reported they were leaving the area after a few days stay, so a cross country flight, assumed to be with baggage.

And, I think the weather was good that day, but some broken...
6th Jun 2020, 00:35
Replies: 18
Views: 4,127
Posted By jmelson

Yes, that is it. VERY little info out about this...

Yes, that is it. VERY little info out about this one. Seems like maybe no distress call, got up to cruising altitude and then hits the ground. Kind of a strange one. Usually there's some tidbit...
5th Jun 2020, 16:44
Replies: 18
Views: 4,127
Posted By jmelson

PA28 crash 4 fatal 6/1 Carlinville, IL

Does anyone know anything about the crash of a PA28 on 6/1/2020 near Carlinville, IL? It has been in our local news. All 4 aboard died. I don't see any mention here or on the NTSB site so far.
...
1st May 2020, 01:49
Replies: 10
Views: 3,251
Posted By jmelson

A few months ago they changed something in the...

A few months ago they changed something in the URL for the radar images. So, if you saved the url, it would no longer work.
Just go to weather.gov and navigate to the desired ZIP code, and you can...
6th Aug 2019, 22:41
Replies: 705
Views: 416,277
Posted By jmelson

Another interesting case is the F-18 that crashed...

Another interesting case is the F-18 that crashed in Bethalto, IL. June 19, 1996. The pilot was a Navy Top Gun, Navy test pilot, then Boeing test pilot doing a practice run through for a Chech air...
11th Jul 2019, 22:33
Replies: 5
Views: 2,232
Posted By jmelson

There is always a low level of these sorts of...

There is always a low level of these sorts of incidents. Every few months some nut case has a "very IMPORTANT message that he needs to get to the president". Some of them are carried away in a...
11th Jul 2019, 22:30
Replies: 5
Views: 2,232
Posted By jmelson

Believe me, the security guys don't fool around. ...

Believe me, the security guys don't fool around. I have been to a number of LOW SECURITY installations in my work in nuclear physics.
But, even they have fairly heavy methods, if they need to use...
27th Jun 2019, 18:58
Replies: 4,656
Views: 4,392,433
Posted By jmelson

OK, not Boeing (although it is, now) and not...

OK, not Boeing (although it is, now) and not commercial, but military flight control systems, but I did see how they did this at McDonnell Douglas some years ago. They had a big Honeywell computer...
24th Apr 2019, 21:16
Replies: 52
Views: 17,917
Posted By jmelson

Oh, really HARD! They only have masculine and...

Oh, really HARD! They only have masculine and feminine articles. So, everything has to have SOME gender assigned. Spark plugs are feminine (la bougie) the earth is masculine (le Monde). Some of...
29th Mar 2019, 22:13
Replies: 5,120
Views: 10,604,071
Posted By jmelson

A misWIRED harness would have shown up...

A misWIRED harness would have shown up immediately, but an intermittent problem would usually not show up right away.
It IS quite interesting that two planes may have had similar problems after just...
29th Mar 2019, 19:10
Replies: 5,120
Views: 10,604,071
Posted By jmelson

Swapping Sin and Cos could be done in the wiring...

Swapping Sin and Cos could be done in the wiring harness.

Jon
19th Mar 2019, 15:09
Replies: 5
Views: 1,067
Posted By jmelson

No, that doesn't make any difference.. The...

No, that doesn't make any difference.. The slowdown develops within a few minutes of starting Firefox and going to the PPrune web site. If I switch to another web site, performance becomes snappy...
17th Mar 2019, 20:12
Replies: 5
Views: 1,067
Posted By jmelson

That did not seem to help. Now, I sometimes get a...

That did not seem to help. Now, I sometimes get a dialog box that script https:<blahblah>testShrink.js:4 is stuck, do you want to stop it.
Stopping that script makes pprune come back to life.
...
11th Mar 2019, 02:45
Replies: 5
Views: 1,067
Posted By jmelson

web site performance

I have a pretty decent desktop with a 3.5 GHz I5 CPU and 4 GB of RAM. I have a 100 MBit/sec cable service. Lately, when reading the forum, it gets insanely slow. I see the CPU at near 100%...
14th Jan 2019, 16:42
Replies: 37
Views: 16,743
Posted By jmelson

The E3 is supposed to be built on a 717 frame,...

The E3 is supposed to be built on a 717 frame, but to the untrained eye, I could not spot the difference.

Jon
Forum: Questions
29th Dec 2018, 19:56
Replies: 30
Views: 11,015
Posted By jmelson

Back in college, I did work/study at NASA-Wallops...

Back in college, I did work/study at NASA-Wallops Station, on the east side of the Chesapeake Bay of Virginia. One of the best sights was the Advanced Technology Demonstrator (McDonnell-Douglas...
16th Nov 2018, 22:49
Replies: 113
Views: 46,293
Posted By jmelson

This link says something about 300 million Euro,...

This link says something about 300 million Euro, maybe that's for the hull, alone. The Aegis radar is 1 - 1.2 BILLION $ unit!
If it could ever be repaired after immersion for a week or two, I can't...
13th Nov 2018, 22:27
Replies: 118
Views: 30,767
Posted By jmelson

The MAPS do not come from the satellites, ONLY...

The MAPS do not come from the satellites, ONLY the position. Some other scheme (built-in maps, CDROM downloads, cell phone-internet, whatever) provides the maps.

Jon
6th Nov 2018, 22:05
Replies: 44
Views: 17,255
Posted By jmelson

Thanks, that makes MUCH more sense! Jon

Thanks, that makes MUCH more sense!

Jon
5th Nov 2018, 21:53
Replies: 44
Views: 17,255
Posted By jmelson

WOW! Antibiotics, SALT WATER, Excedrin? I can...

WOW! Antibiotics, SALT WATER, Excedrin? I can fully understand limiting strong painkillers and such, but if they go JUST a LITTLE farther, they can ban water and air, too!

Jon
Showing results 1 to 25 of 38
 


 
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