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Search: Posts Made By: Smilin_Ed
Showing results 1 to 35 of 42
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Forum: Rumours & News
1st Mar 2010, 18:14
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

AOA

Clive, I've been thinking for sometime that I should jump in here and mention Angle of Attack. Glad you did. Flying the correct AoA allows you to forget about a whole host of things and simply...
Forum: Rumours & News
11th Jan 2010, 18:57
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Fuel Flow Indications?

Does anyone know what the fuel flow was? Although they probably wouldn't have thought to look at the fuel flow, that would have given them a clue. This, of course is hindsight. I assume that is...
Forum: Rumours & News
14th Aug 2009, 17:03
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Pinkman, do I understand it correctly that they...

Pinkman, do I understand it correctly that they injected more water than was found in the fuel in the plane?
Forum: Rumours & News
6th Aug 2009, 23:52
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

What Was The Water Content Of The Fuel Before The Flight?

I have read the whole thread but most of it was several months back so I'm vague on some of it.

As I recall, the fuel from the aircraft which was tested after the crash was within specifications...
Forum: Rumours & News
5th Aug 2009, 00:10
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Turnaround Time

Assuming that you do pump warm fuel into the tanks, how long will it take for any water, frost, or whatever to condense and settle at the sump drains? If the next flight is only an hour or two away,...
Forum: Rumours & News
4th Aug 2009, 00:05
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Fix It Or Restrict It

CJ:


I agree completely. I think they designers didn't consider very long flights across arctic airspace. The cold-soaking exacerbated the situation. I think it just happened that ice, slush, or...
Forum: Rumours & News
3rd Aug 2009, 22:24
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Safety Factors Are Routine

Yes. Engineers are taught to build in a safety factor on every component. That's why wings don't come off as you get to the published limits. Water, and other contaminants, will inevitably get into...
Forum: Rumours & News
3rd Aug 2009, 15:53
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Arcing Wires

Will is right on the cause for TWA800.
Forum: Rumours & News
3rd Aug 2009, 15:05
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Fuel Tank Heating

IMHO, regardless of where the restriction formed, all of this still points toward a need for in-tank fuel heating.
Forum: Rumours & News
2nd Aug 2009, 17:44
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Good Idea Steve

Steve, your analysis of electrical heating problems is right on. Not very practical. Also, I don't have much problem using air bled off the engine as long as it stays in the nacelle and can't leak...
Forum: Rumours & News
1st Aug 2009, 18:04
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

No. Navy A-3 in about 1972.

No. Navy A-3 in about 1972.
Forum: Rumours & News
1st Aug 2009, 17:39
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

No Bleed Air, PLEASE

barit1:


Please don't even think about ducting bleed air out of the engine. I had to investigate an accident where three of my colleagues died because of a bleed air leak. Yes, it was decades...
Forum: Rumours & News
31st Jul 2009, 17:30
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Fuel Heater Needed

Will:
I believe we are in agreement and I think any heating needs to be upstream in the wing to help prevent icing in the pipes as was experienced in testing.

Chris, yes it is the fuel but I...
Forum: Rumours & News
30th Jul 2009, 17:27
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

We Do Know

Chris:
I'm not being facetious here, but we really do know what the problem is/was. In it's simplest form, some of the "stuff" in the fuel tank froze and blocked path of the fuel to the engines....
Forum: Rumours & News
12th Mar 2009, 22:33
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Adapt Other FOHEs?

Since there have been no reported incidents with the other brand(s) of engines, it would seem prudent to consider the FOHE design(s) of those other brand(s). Could other FOHE designs not be adapted...
Forum: Rumours & News
9th Mar 2009, 21:20
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Heat Recovery

But the heat recovered by the necessary function of cooling the oil would otherwise be thrown away.
Forum: Rumours & News
8th Mar 2009, 16:19
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Not Enough Time?

I think there wasn't enough time for the ice to melt in this situation. They had been at low power settings for a while and it simply was too late to melt any/much before they hit the ground. I think...
Forum: Rumours & News
28th Feb 2009, 21:20
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Increased Thermal Efficiency

Quote:
(Actually, increased fuel temperature would incrementally improve thermal efficiency.)


No. Remember, I said incrementally. I doubt if it would even be...
Forum: Rumours & News
26th Feb 2009, 23:16
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Chicken Or Egg?

Were the Fuel Oil Heat Exchangers for either GE or RR engines specifically designed to warm the fuel as well as cool the oil or was increasing fuel temperature simply a fortuitous byproduct?...
Forum: Rumours & News
4th Feb 2009, 23:15
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Chicken or Egg?

Which came first on 038, the rollback or the demand for thrust? :hmm:
Forum: Rumours & News
31st Oct 2008, 20:53
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Where Is The Fuel Heater?

I had envisioned the fuel heater in the wing. From reading this, I gather that it is in the engine nacelle. It looks to me like they needed one in the wing before the pipes enter the engine pylon.
Forum: Rumours & News
25th Oct 2008, 23:57
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Quote from Chris Scott Wouldn't the software...

Quote from Chris Scott
Wouldn't the software which moves the fuel metering valves be different from the flight recorder software which monitors the valve position? Surely they are independent. Is...
Forum: Rumours & News
25th Oct 2008, 18:28
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

The Fuel Metering Valves Opened Fully

I've read all the previous 2012 posts. Unless I missed something, it has been conclusively shown that the fuel metering valves moved to the full open position but there was no fuel to move through...
Forum: Rumours & News
7th Sep 2008, 14:58
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Accretion vs. Break-off Scenarios

I think pax2908 has it right here. Following up on this would also prove, or disprove, snanceki's embracing of the accretion vs. break-off scenario. I agree with snanceki.
Forum: Rumours & News
6th Sep 2008, 17:50
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

The Restriction Was Upstream of the FMV

While it might be possible, in this case, the restriction has been shown to be upstream of the HP pump and thus even further upstream of the Fuel Metering Valve.
Forum: Rumours & News
5th Sep 2008, 00:30
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Power Was Added In The Holding Pattern

The AAIB report says power was increased upon entering holding. It even specifies the fuel flow rates at that time.
Forum: Rumours & News
4th Sep 2008, 16:48
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Aircraft Internal Piping Different With Different Engines?

Does anyone know if the aircraft internal fuel piping is different for each type of engine installed on the 777? This would have a bearing on whether the problem is unique to the 777/Trent...
Forum: Rumours & News
8th Jul 2008, 20:26
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

AOA

Reheat, thanks for a very good article. The most important part is: "AOA information is most important when approaching stall." The U.S. Navy has used it to very good advantage...
Forum: Rumours & News
7th Jul 2008, 20:58
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

AOA Usefulness

M. Mouse wrote: "The question would have to be asked how useful it would be given that the instances of jet transport aeroplanes gliding are mercifully rare!"

I too hope that using AOA to stretch...
Forum: Rumours & News
6th Jul 2008, 22:06
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Angle of Attack Indicator?

Do large jet transports like the 777 have an angle of attack (AOA) indicator? If so, there should be a published AOA for the best glide speed for each flap setting. AOA takes the guess work out of it.
Forum: Rumours & News
5th Jul 2008, 15:35
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Beating a Dead Horse

Dated1, you're beating a dead horse. :ugh: The crew did a commendable job. The task now is to find out why the engines didn't respond to a requested increase in thrust. Nothing more.
Forum: Rumours & News
4th Jul 2008, 22:17
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Back to the Old Thermo Text

Well, I didn't really understand Entropy in Thermodynamics 201 so now, 50 years later, I must break out that old text book and go through it, and the Calculus that supports it, again. Maybe I'll get...
Forum: Rumours & News
7th Jun 2008, 13:06
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Pitot Heat in the B-2

Seekayess, I've never flown a B-2, but chances are that pitot heat is ALWAYS on unless selected otherwise. It may well be that they couldn't even select it off except by pulling a circuit breaker and...
Forum: Rumours & News
5th Jun 2008, 10:30
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Right On Snanecki

Quoting snanecki, "If, as I suspect, the range is normally in the order of +/- 5 degC from whatever is the agreed "norm" is, then what made this fuel have such a spectacularly different freezing...
Forum: Rumours & News
31st May 2008, 01:07
Replies: 3,239
Views: 1,137,456
Posted By Smilin_Ed

Do I interpret this discussion correctly? Is it...

Do I interpret this discussion correctly? Is it being said that whatever caused the freezing point of the fuel to be much lower than typical caused the fuel to not be properly combustible?
Showing results 1 to 35 of 42
 
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