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Search: Posts Made By: wiedehopf
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Forum: Tech Log
25th Feb 2020, 21:09
Replies: 2
Views: 933
Posted By wiedehopf

The RVR depends on the light intensity of the...

The RVR depends on the light intensity of the runway edge and center line lights as far as i know.

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...
Forum: Rotorheads
3rd Feb 2020, 20:38
Replies: 756
Views: 804,963
Posted By wiedehopf

I'm perfectly aware and i don't think i drew any...

I'm perfectly aware and i don't think i drew any conclusions.
There is no CVR or FDR for that particular helicopter if i'm not mistaken.

Edit:
Removed unnecessary speculation.
Forum: Rotorheads
3rd Feb 2020, 19:32
Replies: 756
Views: 804,963
Posted By wiedehopf

In regards to data accuracy: The GPS isn't off,...

In regards to data accuracy: The GPS isn't off, otherwise the track wouldn't be following the US101 so nicely.
And it is indeed not fact or probative value, but it's by a long shot the best data...
Forum: Rotorheads
3rd Feb 2020, 17:40
Replies: 756
Views: 804,963
Posted By wiedehopf

Some ADS-B data points: ...

Some ADS-B data points:
https://tar1090.adsbexchange.com/?icao=a9a1ad&showTrace=2020-01-26&zoom=15

Press K for labels. The labels show ground speed, uncorrected barometric altitude and a...
14th Jan 2020, 21:58
Replies: 54
Views: 25,384
Posted By wiedehopf

There are recordings for 123.9 (departure runway...

There are recordings for 123.9 (departure runway 22R) and 119.1 (arrival runway 22L) available in the archives at: https://www.liveatc.net/search/?icao=jfk

119.1:...
8th Oct 2019, 19:53
Replies: 156
Views: 101,186
Posted By wiedehopf

The RNP 13L/R is approved and in use (when the...

The RNP 13L/R is approved and in use (when the field is using the 13s).
RNAV Visual 13L was only for testing the above procedures or something, has been NOTAMed not available.

Complete JetBlue...
24th Sep 2019, 15:43
Replies: 34
Views: 34,754
Posted By wiedehopf

All aircraft with altitude reporting transmit...

All aircraft with altitude reporting transmit their pressure altitude. (altitude based on an altimeter set to standard pressure)

Some newer aircraft also transmit the QNH used by the pilots.
Also...
19th Sep 2019, 21:11
Replies: 8
Views: 7,795
Posted By wiedehopf

"[...] nonmetallic pellets used in low-power...

"[...] nonmetallic pellets used in low-power replica air guns."

So no powder, just plastic pellets?
That's just ridiculous.
8th Sep 2019, 17:52
Replies: 170
Views: 202,446
Posted By wiedehopf

In regards to the A380: 5000 psi instead of...

In regards to the A380:
5000 psi instead of 3000 psi is sort of pioneering, at least in regards to civil airliners.
So is gust alleviation by controlling individual aileron panels.
Forum: Tech Log
30th Aug 2019, 17:17
Replies: 9
Views: 2,129
Posted By wiedehopf

Wouldn't it be logical to assume that the ACU...

Wouldn't it be logical to assume that the ACU just gets the field current from the output side, which is energized when you switch on the alternator?

The alternator field cb most likely trips on...
Forum: Tech Log
23rd Aug 2019, 16:05
Replies: 4
Views: 2,508
Posted By wiedehopf

The airport makes the rules. They could outlaw...

The airport makes the rules. They could outlaw any 04 departures, couldn't they?

You advise ATC if you can't make the climb gradient and they will put you on a 22 departure.
What's illegitimate...
Forum: Tech Log
13th Aug 2019, 16:05
Replies: 39
Views: 7,442
Posted By wiedehopf

With knowledge of V2 speed and runway length...

With knowledge of V2 speed and runway length combined with aircraft position, you could do calculate somewhat of a minimum of acceleration required.
If that goes below the required acceleration...
Forum: Tech Log
23rd Jul 2019, 18:18
Replies: 45
Views: 19,802
Posted By wiedehopf

Those distances are for being in front of the...

Those distances are for being in front of the radar dish.
Isn't the more interesting figure how much radar energy there is in the cockpit from the weather radar? (none to speak of)

Also i get the...
13th Jul 2019, 06:48
Replies: 41
Views: 30,915
Posted By wiedehopf

FDR: I'm curious, why can't a slow rotation be...

FDR:
I'm curious, why can't a slow rotation be a contributing factor of bad performance?
Especially with 4 engines and a limited amount of excess thrust.

Before rotation, lift induced drag is at...
Forum: Tech Log
24th Jun 2019, 14:57
Replies: 17
Views: 3,235
Posted By wiedehopf

No it's not. It's more like not accepting a...

No it's not.
It's more like not accepting a guaranteed EFATO.

For example on takeoff something else might fail, which is now harder to handle because the FD is already not working.
So while you...
Forum: Tech Log
17th Jun 2019, 05:40
Replies: 11
Views: 2,932
Posted By wiedehopf

The last radar sector would turn you around...

The last radar sector would turn you around unless you have Oceanic clearance.
At least that's my guess.

Or are you saying you lost radio 1-2 radar sectors before the last radar sector?

Or...
Forum: Tech Log
26th May 2019, 14:34
Replies: 11
Views: 2,944
Posted By wiedehopf

At those weight differences you should almost be...

At those weight differences you should almost be able to tell which figure is correct by comparing fuel flow with a similar A320 at the same weight :)

I'm curious how is the "Check GW" message...
Forum: Tech Log
26th May 2019, 12:57
Replies: 11
Views: 2,944
Posted By wiedehopf

Just to throw in another option: How much of...

Just to throw in another option:

How much of those 7 tons can be accounted for by an inaccurate fuel measurement?
I'm aware there is some automatic cross checking between the FOB and fuel used by...
Forum: Tech Log
24th May 2019, 06:45
Replies: 7
Views: 1,927
Posted By wiedehopf

Drag as well as lift change with speed, so you...

Drag as well as lift change with speed, so you can't possibly use one value for the speed in their formulas.

That formula looks like it's basically: s = 1/2 a t^2 with t = v/a
That only works for...
11th May 2019, 20:58
Replies: 93
Views: 60,170
Posted By wiedehopf

The stick shaker behaves the same way no matter...

The stick shaker behaves the same way no matter NG or MAX.
11th May 2019, 05:59
Replies: 93
Views: 60,170
Posted By wiedehopf

If it failed on 737 NG or Classic then you might...

If it failed on 737 NG or Classic then you might have had continuous stick shaker which means you lose stall warning because it's already going off and no longer reliable.

That's not the...
Forum: Tech Log
7th May 2019, 07:25
Replies: 9
Views: 2,622
Posted By wiedehopf

If one failure would be reduced braking and the...

If one failure would be reduced braking and the other no reversers for example, you couldn't even be sure adding the reductions to each other is enough.
The percentage reduction in for example...
Forum: Tech Log
4th May 2019, 20:43
Replies: 25
Views: 5,934
Posted By wiedehopf

There are approaches where FD or AP is mandated...

There are approaches where FD or AP is mandated due to parallel approaches for example.
1st May 2019, 08:53
Replies: 5,120
Views: 10,485,498
Posted By wiedehopf

No one is disputing that the current...

No one is disputing that the current implementation of MCAS was dangerous and led to the 2 accidents.
If those 2 planes could have been saved by better pilot training is very much an orthogonal...
24th Apr 2019, 16:10
Replies: 46
Views: 38,172
Posted By wiedehopf

6 abreast seating should create a more...

6 abreast seating should create a more streamlined hull than 9/10 abreast seating as the fuselage cross section grows as the diameter squared.
(It's a bit flattened but still)
You also have one...
Showing results 1 to 25 of 347
 


 
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