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Search: Posts Made By: Vessbot
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Forum: Tech Log
19th Nov 2019, 05:52
Replies: 12
Views: 1,554
Posted By Vessbot

I.e., accelerates air to the right ...

I.e., accelerates air to the right

Acceleration is a change in velocity, meaning a change in speed or direction. (When you take into account mass, it's also a change in momentum as you said.)
Forum: Tech Log
19th Nov 2019, 01:01
Replies: 12
Views: 1,554
Posted By Vessbot

Interesting. So to see if I have it clear... if...

Interesting. So to see if I have it clear... if in sideslip with relative wind coming from the right, intake accelerates air to the right and therefore produces force to the left, which is ahead of...
Forum: Tech Log
1st Nov 2019, 03:56
Replies: 73
Views: 12,203
Posted By Vessbot

Dave Therhino already said it, but just to be...

Dave Therhino already said it, but just to be more clear: there's at least 3 configurations under the discussion:

1. Blocked/faired intake
2. Open intake with windmilling engine
3. Open intake...
Forum: Tech Log
31st Oct 2019, 03:26
Replies: 73
Views: 12,203
Posted By Vessbot

You're right and I was painting in broad strokes....

You're right and I was painting in broad strokes. I meant "interaction" beyond that which a brick would have in its fall.



You too are right, and I shot my gun too fast. Energy goes into...
Forum: Tech Log
27th Oct 2019, 04:56
Replies: 73
Views: 12,203
Posted By Vessbot

I see it as perfectly applicable, if you take a...

I see it as perfectly applicable, if you take a bigger scale view of things than all the control transients, different areas of the disk, etc. What's important is that by turning, the rotor puts...
Forum: Tech Log
27th Oct 2019, 04:49
Replies: 73
Views: 12,203
Posted By Vessbot

I would say that energy transfer is the whole...

I would say that energy transfer is the whole story, but not the only story ;)

What I mean is that many phenomena have more than one explanation, from different aspects, simultaneously, of what's...
Forum: Tech Log
26th Oct 2019, 22:43
Replies: 73
Views: 12,203
Posted By Vessbot

All these particulars are true, but that doesn't...

All these particulars are true, but that doesn't change that fundamentally the fan is still a prop attached to the shaft. Including in the context of this discussion, transfer of energy to the shaft...
Forum: Tech Log
26th Oct 2019, 22:39
Replies: 73
Views: 12,203
Posted By Vessbot

Think of the blades like a clutch that engages...

Think of the blades like a clutch that engages the airsteam to the rest of the engine, and unstalling them (by letting it windmill) as the engagement of that clutch. With them unstalled and...
Forum: Tech Log
26th Oct 2019, 20:13
Replies: 73
Views: 12,203
Posted By Vessbot

A paper was just posted a few posts up describing...

A paper was just posted a few posts up describing the results of an experiment showing the opposite -- and it really seems the eggheads had done their work properly, it has Greek letters and...
Forum: Tech Log
22nd Oct 2019, 01:58
Replies: 19
Views: 2,723
Posted By Vessbot

Pretty sure that it is what was asked for....

Pretty sure that it is what was asked for. Obviously he wasn't asking if you need to tune and identify a VOR if you're flying it with a VOR receiver.
Forum: Tech Log
20th Oct 2019, 21:09
Replies: 11
Views: 1,482
Posted By Vessbot

The "mandatory" note for the altitude on the Jepp...

The "mandatory" note for the altitude on the Jepp refers to the crossing of the fix, not the flying of the segment before it. It's equivalent to how in some SID/STAR presentations there's a under-...
Forum: Tech Log
16th Oct 2019, 20:59
Replies: 17
Views: 1,954
Posted By Vessbot

"Been trained" is not a binary yes/no...

"Been trained" is not a binary yes/no proposition. Skill, saturation capacity, situational awareness, etc. go up gradually and it's naive to think that someone coming out of the schoolhouse as a new...
Forum: Tech Log
2nd Oct 2019, 14:11
Replies: 47
Views: 5,712
Posted By Vessbot

Sorry, I should have used a quote. I was talking...

Sorry, I should have used a quote. I was talking about the scenario where they were already in managed, with all the restrictions deleted.

Seems to me like an absurd piece of makework.
Forum: Tech Log
1st Oct 2019, 14:59
Replies: 47
Views: 5,712
Posted By Vessbot

I wonder what the plan is if they later give you...

I wonder what the plan is if they later give you the restrictions again.
Forum: Tech Log
30th Sep 2019, 06:35
Replies: 47
Views: 5,712
Posted By Vessbot

Jeez man, all this hoopla about advanced avionics...

Jeez man, all this hoopla about advanced avionics and elegant user-friendliness, and reading this it looks like I have to hack into the Pentagon to start a climb!
Forum: Tech Log
27th Sep 2019, 13:43
Replies: 21
Views: 3,060
Posted By Vessbot

Well for the "variants of the same type" part of...

Well for the "variants of the same type" part of the question, it's been noted that different engine installations change the behavior. Also aerodynamic differences like different stretches would...
Forum: Tech Log
27th Sep 2019, 13:22
Replies: 21
Views: 3,060
Posted By Vessbot

I'm guessing the 105lb woman had her brain...

I'm guessing the 105lb woman had her brain engaged into the flight control loop - anticipating what forces will arise and when, using proactive trim, making thrust changes at times so as to have the...
Forum: Tech Log
10th Sep 2019, 21:52
Replies: 36
Views: 6,626
Posted By Vessbot

Because that would be indecent :}

Because that would be indecent :}
Forum: Tech Log
10th Sep 2019, 01:51
Replies: 36
Views: 6,626
Posted By Vessbot

But some are only winging it

But some are only winging it
Forum: Tech Log
27th Aug 2019, 19:54
Replies: 33
Views: 8,408
Posted By Vessbot

Is 500 fpm (with speed brakes of you're real...

Is 500 fpm (with speed brakes of you're real close) not enough?
Forum: Tech Log
16th Aug 2019, 05:20
Replies: 40
Views: 6,834
Posted By Vessbot

Sounds like we're in agreement... or at least if...

Sounds like we're in agreement... or at least if there's disagreement somewhere, I can't find it anymore.

If I'm reading you right, you agree that for steady states it's excess thrust that...
Forum: Tech Log
14th Aug 2019, 22:18
Replies: 40
Views: 6,834
Posted By Vessbot

For a certain weight, climb angle is proportional...

For a certain weight, climb angle is proportional to excess thrust, which means thrust minus drag. Increase thrust, or decrease drag, and excess thrust is increased.



No matter the wing, L...
Forum: Tech Log
14th Aug 2019, 18:58
Replies: 34
Views: 6,831
Posted By Vessbot

It's not really that it "should be" one or the...

It's not really that it "should be" one or the other. As Check Airman showed above, it's just a different approximation, with the "multiply by 3" one yielding a slightly steeper descent. Put in...
Forum: Tech Log
14th Aug 2019, 18:03
Replies: 40
Views: 6,834
Posted By Vessbot

Agreed. And to clarify, I'm not really addressing...

Agreed. And to clarify, I'm not really addressing the original discussion about acceleration checks down the runway. I took a tangent just from your statement about what physically determines climb...
Forum: Tech Log
14th Aug 2019, 14:28
Replies: 40
Views: 6,834
Posted By Vessbot

Climb gradient is a function of excess thrust,...

Climb gradient is a function of excess thrust, nothing to do with lift. (Some are surprised to learn that the steeper you climb, the less lift is actually required or produced by the wing.)
Showing results 1 to 25 of 443
 


 
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