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Search: Posts Made By: Radu Poenaru
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Forum: Tech Log
26th Feb 2019, 07:28
Replies: 24
Views: 2,864
Posted By Radu Poenaru

It is! It’s quasi-impossible. The only time this...

It is! It’s quasi-impossible. The only time this might work is if you have ridiculous long final, (imagine +7000’ platform) and comming in high above the glidepath. Come in V/S all the way to the FDP...
Forum: Tech Log
25th Feb 2019, 15:54
Replies: 24
Views: 2,864
Posted By Radu Poenaru

I should know better than to argue about this one...

I should know better than to argue about this one on the internet, but here goes:

You want to fly a temperature corrected NPA in NAV-FPA. The FDP is at 2000’ (2100’ temp corrected) at 4.7NM from...
Forum: Tech Log
18th Aug 2016, 05:52
Replies: 97
Views: 10,010
Posted By Radu Poenaru

Ok, sorry but reading that sentence over and over...

Ok, sorry but reading that sentence over and over again is killing me inside:

Real time simulation means 1 sec computer simulation = 1 sec real-time.
You are not predicting any future, you are...
Forum: Tech Log
16th Dec 2015, 09:16
Replies: 25
Views: 4,425
Posted By Radu Poenaru

Ha! Thanks for the clarification. One simple word...

Ha! Thanks for the clarification. One simple word changed & it makes a lot of difference. I think I get it now...

I'm still left wondering how is the FAA expecting to enforce this? "Yes, your...
Forum: Tech Log
15th Dec 2015, 14:44
Replies: 25
Views: 4,425
Posted By Radu Poenaru

Of course I will; but I live in EASA-land where...

Of course I will; but I live in EASA-land where all I need is visual ref with one of about 11 items. :p

Is there a visibility requirement for CAT I approaches? Yes. And that visibility is...
Forum: Tech Log
12th Dec 2015, 07:18
Replies: 25
Views: 4,425
Posted By Radu Poenaru

Would you let it go already. As you have been...

Would you let it go already. As you have been repeatedly told: those NOTAMS's new (reported) vis. will control whether you can begin/continue the approach beyond FAF/(1000' AAL). Not descending...
Forum: Tech Log
11th Dec 2015, 08:05
Replies: 25
Views: 4,425
Posted By Radu Poenaru

Visual assessment of visibility at minima (using...

Visual assessment of visibility at minima (using complicated arithmetic nonetheless) is not required to descend below DA/MDA. Having visual reference on one of the 11 or so listed items (als/thrshold...
Replies: 1,293
Views: 570,275
Posted By Radu Poenaru

I'll have a go at this: An airplane is...

I'll have a go at this:
An airplane is descending with a constant IAS and zero thrust. What happens to the descent gradient when the OAT increases?

No change in descent gradient.
Descent...
Forum: Tech Log
8th Jun 2013, 06:17
Replies: 40
Views: 8,548
Posted By Radu Poenaru

And still nobody answered it: "Reducing...

And still nobody answered it:

"Reducing lateral stability makes the airplane more maneuverable,etc (good thing) but if you reduce it too much w.r.t. directional stability the airplane will become...
Forum: Jet Blast
18th May 2013, 05:00
Replies: 16
Views: 1,807
Posted By Radu Poenaru

If it's just a matter of spherical trig then: ...

If it's just a matter of spherical trig then:

Lat1 = asin[sin(Lat0)*cos(D) + cos(Lat0)*sin(D)*cos(A0)]
Lon1 = Lon0 + atan2(sin(D)*sin(A0),cos(D)*cos(Lat0) - cos(A0)*sin(D)*sin(Lat0))


Or...
Replies: 52
Views: 12,003
Posted By Radu Poenaru

Maybe not the biggest offenders, but this is of...

Maybe not the biggest offenders, but this is of the top of my head:

"The inner layer of a windscreen is made of: a) soft polycarbonate b)glass"

"The ILS uses frequencies in the : a)VHF b)UHF" ...
Replies: 52
Views: 12,003
Posted By Radu Poenaru

mad_jock I have the feeling it's been quite a...

mad_jock I have the feeling it's been quite a while since you took these exams. Perhaps it was even so long ago that you had to take written exams and study a meaningful syllabus.

If that is the...
Replies: 52
Views: 12,003
Posted By Radu Poenaru

Well, simple fact of the matter is hammering the...

Well, simple fact of the matter is hammering the question banks will give you a better result on the tests than actually learning the stuff.

I am formally trained with a college degree on one of...
11th Apr 2013, 12:49
Replies: 27
Views: 4,858
Posted By Radu Poenaru

Altimeter does not measure density!!, it measures...

Altimeter does not measure density!!, it measures pressure! Static pressure.
And while there is a general connection between temp, pressure and density, you need to get your notions straight first...
11th Apr 2013, 11:17
Replies: 27
Views: 4,858
Posted By Radu Poenaru

What is the size of your "hot air bubble" ? ...

What is the size of your "hot air bubble" ?

Is it a (small) thermal column of rising air? Then, there, static pressure will remain the same, temperature increases, density is smaller (why it's...
11th Apr 2013, 07:40
Replies: 27
Views: 4,858
Posted By Radu Poenaru

Just being pedantic here, but it might help with...

Just being pedantic here, but it might help with the OP's confusion:

"If an aircraft if above REFERENCE ALTITUDE for computed QNH and temperature is higher than standard, then the altimeter will...
11th Apr 2013, 05:00
Replies: 27
Views: 4,858
Posted By Radu Poenaru

High temperature does not imply low pressure...

High temperature does not imply low pressure (actually quite the opposite)
Yes, temp and pressure are related via the ideal gas law, but for most meteorological purposes you have to start to view...
Forum: Tech Log
16th Feb 2013, 22:35
Replies: 24
Views: 3,946
Posted By Radu Poenaru

kroack, your curiosty wants you to get your hands...

kroack, your curiosty wants you to get your hands on a North Atlantic MNPSA Operations Manual.

You'll find the procedures for comms failure in Chapter 7 Communications and Positions Reporting...
Forum: Tech Log
24th Nov 2012, 07:30
Replies: 147
Views: 19,268
Posted By Radu Poenaru

Gezzs what a blood bath in this thread.. I'm...

Gezzs what a blood bath in this thread..

I'm assuming "longer" means dt (more time to) slow down from the same speed

Now stop killing the momentum and inertia, it has nothing to do with our...
13th Sep 2012, 19:08
Replies: 9
Views: 3,579
Posted By Radu Poenaru

Looks really well built and works nice ! One...

Looks really well built and works nice !
One thing that got my attention: On the TCAS/weather map; I waited until the center of the trafic circle has pentrated the inner ring before pressing the...
13th Sep 2012, 18:45
Replies: 14
Views: 11,619
Posted By Radu Poenaru

It's been a really long time since the accident,...

It's been a really long time since the accident, and I can't seem to find the final report anywhere on the net anymore (it was available, I have read it entirely a few years ago).

I distinctly...
Forum: Tech Log
17th Aug 2012, 15:16
Replies: 11
Views: 1,606
Posted By Radu Poenaru

What in the world is a "center of masses"? (or...

What in the world is a "center of masses"? (or center of mass?) Do you mean the CP perhaps?

Second, if you have to use words like "small bodies" and "superlarge objects" to differentiate...
Forum: Tech Log
15th Aug 2012, 13:20
Replies: 11
Views: 1,606
Posted By Radu Poenaru

The way the mass is distributed (all in one big...

The way the mass is distributed (all in one big lump in the center or lots on the margins and nothing in the center) won't affect your CG; What will change is the moment of inertia...
Forum: Tech Log
25th Jul 2012, 07:22
Replies: 388
Views: 58,118
Posted By Radu Poenaru

Actually, you can consider the prop blade to be a...

Actually, you can consider the prop blade to be a wing. In which case "A wing/propeller is the surface area which is pushed by the fluid."

Using a rotating cylinder to explain lift is a...
Showing results 1 to 24 of 24


 
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