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Search: Posts Made By: gr8shandini
Showing results 1 to 35 of 67
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Forum: Tech Log
2nd Jul 2008, 19:49
Replies: 10
Views: 2,110
Posted By gr8shandini

No worries. I'm always willing to admit when I'm...

No worries. I'm always willing to admit when I'm wrong. The reduced sink rate limits didn't really cross my mind. I work in a certification environment so we're always working close to no kidding...
Forum: Tech Log
2nd Jul 2008, 18:15
Replies: 10
Views: 2,110
Posted By gr8shandini

I'm not an operator, but I would think that none...

I'm not an operator, but I would think that none of the scenarios you listed would justify landing above the published max landing weight. In doing so, you'd be risking structural damage possibly...
Forum: Tech Log
1st Jul 2008, 19:14
Replies: 23
Views: 3,788
Posted By gr8shandini

I'm not quite sure what you're getting at, 411....

I'm not quite sure what you're getting at, 411. AOA, glideslope angle, and angle of incidence will give you pitch attitude in a stabilized descent.

Could you be hinting at the tandem landing...
Forum: Tech Log
30th Jun 2008, 19:23
Replies: 10
Views: 1,601
Posted By gr8shandini

Top to bottom is common sense; just like washing...

Top to bottom is common sense; just like washing your car. Front to rear may just be to help ensure that fewer ice particles re-attach themselves to the leading edge in the event that someone is...
Forum: Tech Log
25th Jun 2008, 14:28
Replies: 57
Views: 17,084
Posted By gr8shandini

Actually, I heard another, not nearly as...

Actually, I heard another, not nearly as favorable account of the NF-104 incident from an engineer on the program. It's hard to say where the truth lies as Yeager has a - let's say - disagreeable...
Forum: Tech Log
23rd Jun 2008, 19:34
Replies: 57
Views: 17,084
Posted By gr8shandini

I guess it all depends on how you define when...

I guess it all depends on how you define when you're "in a corner." When I was punished in grade school, we weren't required to actually touch the line where the walls come together, so being in the...
Forum: Tech Log
23rd Jun 2008, 16:04
Replies: 57
Views: 17,084
Posted By gr8shandini

Airfoil, You're normally on top of the...

Airfoil,

You're normally on top of the aerodynamics questions, but I'm gonna have to disagree with you on this one. Take the term "coffin corner" out of the picture and think about maintaining...
Forum: Tech Log
22nd Jun 2008, 18:56
Replies: 57
Views: 17,084
Posted By gr8shandini

Actually, the term "coffin corner" refers to a...

Actually, the term "coffin corner" refers to a very small window between mach buffet and stall, not loss of control. And it is possible to maintain a given airspeed while descending, is it not? ...
Forum: Tech Log
20th Jun 2008, 18:04
Replies: 20
Views: 4,460
Posted By gr8shandini

I'm not sure what "shaded symmetry" is, but I can...

I'm not sure what "shaded symmetry" is, but I can assure you that there is no sideslip in a crab. A crab is basically similar to the canoe situation stated earlier. If you wanted to track straight...
Forum: Flight Testing
18th Jun 2008, 18:56
Replies: 7
Views: 1,482
Posted By gr8shandini

That'll come close. But the lift acts at ~25%...

That'll come close. But the lift acts at ~25% MAC not just 1/4 chord (I know that's what you meant, G, but it could be confusing for some). If you have a W&B sheet that lists both MAC and FS,...
Forum: Flight Testing
18th Jun 2008, 15:33
Replies: 7
Views: 1,482
Posted By gr8shandini

Sorry, I wish I could help you out, but there's...

Sorry, I wish I could help you out, but there's nothing simple about that question. To get an exact answer would require a lot of proprietary information that I don't believe you'll find floating...
Forum: Flight Testing
18th Jun 2008, 15:19
Replies: 7
Views: 1,976
Posted By gr8shandini

I didn't mean any disrespect to those with...

I didn't mean any disrespect to those with degrees other than engineering. Or even those without a degree at all. Obviously, if you've got the smarts, you can learn anything regardless of what it...
Forum: Flight Testing
17th Jun 2008, 15:16
Replies: 7
Views: 1,976
Posted By gr8shandini

I wouldn't say that it's a silly dream. Just...

I wouldn't say that it's a silly dream. Just make sure you know what it's actually all about before you make any irreversible decisions. I'd say most of our pilots spend at least 90% of their time...
Forum: Tech Log
12th Jun 2008, 18:25
Replies: 27
Views: 4,529
Posted By gr8shandini

Guppy, No doubt there would be jail time...

Guppy,

No doubt there would be jail time involved, but I'm pretty sure that when most people buy a ticket for a 2 hour flight, they're not expecting to spend 3 on the ground. And that's not even...
Forum: Flight Testing
11th Jun 2008, 21:34
Replies: 22
Views: 4,168
Posted By gr8shandini

I was thinking of the complications and...

I was thinking of the complications and apparently not communicating well. I meant that the actual CG of the as assembled vehicle doesn't change throughout the flight, but weight on the mounting...
Forum: Flight Testing
11th Jun 2008, 19:13
Replies: 22
Views: 4,168
Posted By gr8shandini

Sorry, no numbers, but I can say that it gets...

Sorry, no numbers, but I can say that it gets very complicated on something like the shuttle carrier (there's gotta be a good nickname for that thing) or an E-3. The strapped on bits for those...
Forum: Tech Log
11th Jun 2008, 18:22
Replies: 27
Views: 4,529
Posted By gr8shandini

I kind of figured that was the case. But I'm...

I kind of figured that was the case. But I'm sure it's only a matter of time before someone loses it and decides to pop an exit hatch and escape his "captors." Once I spent 3 hours on the ground at...
Forum: Tech Log
11th Jun 2008, 16:40
Replies: 27
Views: 4,529
Posted By gr8shandini

I know this is a completely uneducated question...

I know this is a completely uneducated question from someone who only flies airlines as a pax, but I've always wondered why ATC clears folks to taxi if the know they can't accommodate a timely...
Forum: Tech Log
6th Jun 2008, 17:27
Replies: 7
Views: 951
Posted By gr8shandini

Slam, There's a couple of reasons that you...

Slam,

There's a couple of reasons that you might want to add runoff rather than runway. One is that you've got to be able to make a safe approach to the runway threshold. That might not be...
Forum: Tech Log
5th Jun 2008, 21:55
Replies: 72
Views: 24,388
Posted By gr8shandini

Hmm. Still not quite getting it, but I'm...

Hmm. Still not quite getting it, but I'm unfamiliar with a trimsheet. I'm not an operator, just an engineer working for the OEMs, so I've always been happy with our "slopey" charts. I'd like to...
Forum: Tech Log
5th Jun 2008, 19:10
Replies: 91
Views: 12,139
Posted By gr8shandini

That sounds like a lind from a car commercial.

That sounds like a lind from a car commercial.
Forum: Tech Log
5th Jun 2008, 16:27
Replies: 72
Views: 24,388
Posted By gr8shandini

I'm confused. How does changing the datum affect...

I'm confused. How does changing the datum affect accuracy? It's just a reference point.
Forum: Flight Testing
4th Jun 2008, 17:54
Replies: 4
Views: 1,602
Posted By gr8shandini

I'm not familiar with the term "handling...

I'm not familiar with the term "handling frequencies." A natural frequency, however, is simply the frequency at which a structure responds to a force. For example, when someone jumps off a diving...
Forum: Tech Log
2nd Jun 2008, 19:28
Replies: 24
Views: 4,048
Posted By gr8shandini

Hoppy, In a much simpler response to your...

Hoppy,

In a much simpler response to your post, yes, you are correct that an H-tail increases elevator effectiveness through endplate effect. However, the size of the horizontal is rarely a...
Forum: Tech Log
2nd Jun 2008, 03:16
Replies: 24
Views: 4,048
Posted By gr8shandini

Yup. So much so that they had a big problem with...

Yup. So much so that they had a big problem with veritcals cracking well before their expected service life was up. The fix is that strake on the LEX that looks bolted on as an afterthought, since...
Forum: Tech Log
31st May 2008, 23:19
Replies: 24
Views: 4,048
Posted By gr8shandini

All valid concerns so far. However, the critical...

All valid concerns so far. However, the critical control case for single engine aircraft is crosswind landings. Unless you're in the aerobatic category, there's no requirement to recover from a spin....
Forum: Tech Log
30th May 2008, 18:45
Replies: 42
Views: 12,121
Posted By gr8shandini

Yup. But if this post were truly worthy of that...

Yup. But if this post were truly worthy of that geek smiley, you'd have whipped out the protractor and shock tables and told us how fast that Hornet was going.
Forum: Tech Log
30th May 2008, 18:37
Replies: 91
Views: 12,139
Posted By gr8shandini

Pace, Check out the following site: ...

Pace,

Check out the following site:

http://selair.selkirk.bc.ca/aerodynamics1/Multi/Page1.html

The top graph shows a graph of the power required to maintain level flight at a certain...
Forum: Tech Log
30th May 2008, 03:12
Replies: 42
Views: 12,121
Posted By gr8shandini

Well, there's two ways you can think about it....

Well, there's two ways you can think about it. The first is that an airplane is designed to slip through the air leaving a minimal wake, right? Well, in order for that to happen, the air that passes...
Forum: Tech Log
29th May 2008, 23:57
Replies: 42
Views: 12,121
Posted By gr8shandini

Actually, the shock forms when the airflow starts...

Actually, the shock forms when the airflow starts to slow down again, not when it first goes supersonic. Check out Brian's post in the "I spy" thread that just popped up on the front page again. ...
Forum: Tech Log
29th May 2008, 13:12
Replies: 12
Views: 1,927
Posted By gr8shandini

Yes, the signal to the actuators in a FBW system...

Yes, the signal to the actuators in a FBW system is analogue, but I don't see how converting to digital would improve things. If you did that, you'd need a separate computer for each actuator to...
Forum: Tech Log
28th May 2008, 20:33
Replies: 54
Views: 8,225
Posted By gr8shandini

Keith, When I mentioned gyroscopic forces,...

Keith,

When I mentioned gyroscopic forces, I was referring to the WWI era when the early rotary engines actually had the crankshaft bolted to fuselage and the whole engine rotated. Obviously,...
Forum: Tech Log
28th May 2008, 17:45
Replies: 12
Views: 1,927
Posted By gr8shandini

Hmm. Actually, to answer the author's question...

Hmm. Actually, to answer the author's question (and my own) about power sources, what if you constructed the tailcone out of a composite skin with aluminum longerons? That way, you could use the...
Forum: Tech Log
28th May 2008, 17:35
Replies: 91
Views: 12,139
Posted By gr8shandini

Pace: Sorry but the Wiz is right on this...

Pace:

Sorry but the Wiz is right on this one (but never mind the man behind the curtain! - sorry, couldn't resist). When you do flight test to determine Vy, you do climb testing at various...
Forum: Tech Log
28th May 2008, 16:06
Replies: 91
Views: 12,139
Posted By gr8shandini

I think I understand what he's saying. He's not...

I think I understand what he's saying. He's not saying that nosing over will find you some extra power you weren't making before, but rather assuming you've got a small but positive rate of climb, so...
Showing results 1 to 35 of 67
 
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