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Forum: Tech Log
4th Dec 2018, 18:06
Replies: 20
Views: 5,017
Posted By Spir4

Now we're getting somewhere, and you guys/gals...

Now we're getting somewhere, and you guys/gals make excellent points!
Forum: Tech Log
4th Dec 2018, 15:29
Replies: 20
Views: 5,017
Posted By Spir4

That is still the case no? And that doesn't...

That is still the case no?
And that doesn't really answer my question.
Forum: Tech Log
4th Dec 2018, 14:47
Replies: 20
Views: 5,017
Posted By Spir4

I'm familiar with that document, and it doesn't...

I'm familiar with that document, and it doesn't explain what I'm asking. It just states that this is the case, but not why this is the case.
Forum: Tech Log
4th Dec 2018, 12:47
Replies: 20
Views: 5,017
Posted By Spir4

Using flex temperature on contaminated runways

Hi,

A simple question: why is using flex temperature on contaminated runways not allowed?
Using flex temperature still uses the Vmcg for the full rated thrust, so it's not that you would lose...
Forum: Tech Log
9th Jun 2013, 10:22
Replies: 9
Views: 3,089
Posted By Spir4

GPS: what does a satellite send out?

Hello,

A GPS satellite sends out ephemeris and almanac data, on that subjects all sources I've read agree.
But it's about the health data, the ionospheric delays, and the offset of satellite...
Forum: Tech Log
9th Jun 2013, 10:04
Replies: 3
Views: 2,779
Posted By Spir4

VOR and variation

Hello,

In a book I've read the following about an RMI:
If the aircraft's variation is different from the VOR station's variation, the indication of the relative bearing is incorrect, but the QDM...
Forum: Tech Log
14th Apr 2013, 13:36
Replies: 12
Views: 3,331
Posted By Spir4

Okay here are two theories: 1) Why the...

Okay here are two theories:

1)

Why the drag decreases with wing sweep in subsonic speeds below M2.1:
The part of the wing behind the mach cone 'knows' the air is coming, so the airflow can...
Forum: Tech Log
14th Apr 2013, 11:19
Replies: 12
Views: 3,331
Posted By Spir4

Okay, but if you take the relative thickness into...

Okay, but if you take the relative thickness into account, and the aircraft is below M2.1, a higher relative thickness (as is the case with increased wing sweep) should also produce larger drag...
Forum: Tech Log
14th Apr 2013, 08:37
Replies: 12
Views: 3,331
Posted By Spir4

Why would that be? And doesn't an increase in...

Why would that be? And doesn't an increase in thickness creates an increase in drag?
Forum: Tech Log
11th Apr 2013, 07:15
Replies: 12
Views: 3,331
Posted By Spir4

Then, why is the drag less below M2.1? Why...

Then, why is the drag less below M2.1? Why suddenly, above M2.1, the drag gets higher for a higher swept-back wing?


I assume every other aspect of the wing remains the same. According to the...
Forum: Tech Log
9th Apr 2013, 19:50
Replies: 9
Views: 18,643
Posted By Spir4

@ italia458: Thank you a thousand times. This is...

@ italia458: Thank you a thousand times. This is an issue that has been bothering me since my PPL lessons. I just accepted everything, because nobody I've met so far was able to give me a clear...
Forum: Tech Log
9th Apr 2013, 18:15
Replies: 9
Views: 18,643
Posted By Spir4

Okay I get half of that :) Why talk about...

Okay I get half of that :)

Why talk about thrust of an engine when the thrust is not related to motion (through the air in this case)?
Without that motion, if you talk about thrust of an engine,...
Forum: Tech Log
9th Apr 2013, 16:51
Replies: 9
Views: 18,643
Posted By Spir4

Power vs Thrust (again)

Hello,

Yes yes, another Power vs Thrust question :)
I understand the basics, I know the details, but I don't really understand the details.
I searched through the forum, read all the power vs...
Forum: Tech Log
9th Apr 2013, 16:35
Replies: 12
Views: 3,331
Posted By Spir4

Increased drag swept wing high Mach nr.

Hello,

I've been struggling with this for a while, and no one was able to give me a clear answer yet.
Please have a look at the following graph:...
Replies: 4
Views: 1,945
Posted By Spir4

Okay thanks for the information.

Okay thanks for the information.
Replies: 4
Views: 1,945
Posted By Spir4

Yeah that was my first idea too. The first two...

Yeah that was my first idea too. The first two numbers: speed ranges on the one side. The second pair of numbers for the other side.
Any idea what the letters might mean? And which one would you...
Replies: 4
Views: 1,945
Posted By Spir4

Aviat 617 flight computer

Hello,

I was looking at the Aviat 617 flight computer, but I've noticed there are a couple of different versions with different scales:
A-B 60-350/100-500 Scale Flight
A-G 60-350/300-1000...
Showing results 1 to 17 of 17


 
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