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Search: Posts Made By: peekay4
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Forum: Rumours & News
4th Nov 2015, 19:32
Replies: 2,082
Views: 2,497,034
Posted By peekay4

Loss of confidence in the Sharm el-Sheikh airport...

Loss of confidence in the Sharm el-Sheikh airport security procedures, and Egyptian security capabilities in general.
Forum: Rumours & News
4th Nov 2015, 16:09
Replies: 2,082
Views: 2,497,034
Posted By peekay4

A fuel tank explosion might be the effect, not...

A fuel tank explosion might be the effect, not the cause.

E.g., an uncontained engine failure might lead a chain of events and subsequent rupture of a tank, either through direct piercing or...
Forum: Rumours & News
4th Nov 2015, 14:10
Replies: 2,082
Views: 2,497,034
Posted By peekay4

And the difference between GPS Altitude and Baro...

And the difference between GPS Altitude and Baro Altitude is a red herring anyway, because what we mostly care about here are the altitude changes, not the absolute altitude value be it GPS or Baro....
Forum: Rumours & News
4th Nov 2015, 07:46
Replies: 2,082
Views: 2,497,034
Posted By peekay4

@RYFQB That's a nice experiment! It again...

@RYFQB

That's a nice experiment! It again suggests no phugoids.

https://s3.amazonaws.com/org.barkah.misc/Metrojet9268_computed_alt.png

@Sokol

Below is the correlation between GPS Ground...
Forum: Rumours & News
4th Nov 2015, 06:12
Replies: 2,082
Views: 2,497,034
Posted By peekay4

That's actually not correct. If we only had...

That's actually not correct.

If we only had the wreckage, then for all we know the pilots might have descended the aircraft controllably for some time (e.g., to attempt an emergency landing with...
Forum: Rumours & News
4th Nov 2015, 05:30
Replies: 2,082
Views: 2,497,034
Posted By peekay4

Pitot-static system, so you have both dynamic and...

Pitot-static system, so you have both dynamic and static pressures. There are many factors which can make their reading unreliable, including pressure changes related to the event, the changing...
Forum: Rumours & News
4th Nov 2015, 04:15
Replies: 2,082
Views: 2,497,034
Posted By peekay4

It's hard to compute a function because we don't...

It's hard to compute a function because we don't know which data points (if any) may be considered reliable. E.g., even the GPS-derived altitudes don't match the GPS-derived vertical speeds.

It...
Forum: Rumours & News
4th Nov 2015, 03:48
Replies: 2,082
Views: 2,497,034
Posted By peekay4

Hmm, reading through the FR24 blog, they say all...

Hmm, reading through the FR24 blog, they say all pressure data (pressure altitude, TAS, vertical speed) are unreliable right after the "event" around 04:13:13 UTC or 331 seconds into the published...
Forum: Rumours & News
3rd Nov 2015, 14:51
Replies: 2,082
Views: 2,497,034
Posted By peekay4

Black boxes were required by regulation to be...

Black boxes were required by regulation to be located as aft as practicable.

However, the current best practice is to have two combination CVR/FDRs: one located aft, and the second located near...
Forum: Rumours & News
2nd Nov 2015, 01:40
Replies: 2,082
Views: 2,497,034
Posted By peekay4

Many of them are duplicates / updates of old...

Many of them are duplicates / updates of old incidents; looks like there are 45 unique instances in your list.
Forum: Rumours & News
1st Nov 2015, 02:45
Replies: 2,082
Views: 2,497,034
Posted By peekay4

We can simply plot all the stations together to...

We can simply plot all the stations together to quickly see how their data relate:

https://s3.amazonaws.com/org.barkah.misc/altitudebystation.png
Forum: Rumours & News
31st Oct 2015, 22:26
Replies: 2,082
Views: 2,497,034
Posted By peekay4

It's actually a good question. Remember ADS-B is...

It's actually a good question. Remember ADS-B is a "squitter" -- it does not require an interrogation before sending out a message!
Forum: Rumours & News
31st Oct 2015, 22:10
Replies: 2,082
Views: 2,497,034
Posted By peekay4

Normally both the transmitter and receiver are...

Normally both the transmitter and receiver are synchronized to UTC, so there is no need to send the time in the actual message.

Assuming the transmitter is coupled to UTC, it will send ADS-B...
Forum: Rumours & News
31st Oct 2015, 21:57
Replies: 2,082
Views: 2,497,034
Posted By peekay4

Most Internet-connected PCs are synchronized to...

Most Internet-connected PCs are synchronized to time.windows.com, which is not NTP.

Windows Time Service is "guaranteed" to only within five minute accuracy, although in practice it's usually...
Showing results 1 to 14 of 14


 
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