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Search: Posts Made By: lefthanddownabit
Showing results 1 to 35 of 43
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Forum: Tech Log
26th Sep 2016, 20:05
Replies: 60
Views: 26,127
Posted By lefthanddownabit

Speaking as an engineer, you could possibly...

Speaking as an engineer, you could possibly design a system to estimate sideslip on ground to estimate wind vector. But you would have to ask yourself why anyone would do such a thing. It's of little...
Forum: Spectators Balcony (Spotters Corner)
5th Feb 2015, 17:39
Replies: 133
Views: 123,433
Posted By lefthanddownabit

It's nothing like ETIHAD (which looks like a...

It's nothing like ETIHAD (which looks like a Picasso reject).

I think it's a big improvement on the old livery. Bold and striking.
Forum: Rumours & News
29th Dec 2014, 21:51
Replies: 243
Views: 266,747
Posted By lefthanddownabit

This is normal for a 747. Those LE flap sections...

This is normal for a 747. Those LE flap sections retract automatically when thrust reverse is deployed. Helps prevent damage to these surfaces. They auto extend again once reverse is stowed.
Forum: Rumours & News
23rd Sep 2014, 17:11
Replies: 109
Views: 248,838
Posted By lefthanddownabit

The solution is surely to mention the escape path...

The solution is surely to mention the escape path from overwing exits in the safety briefing. Slides are mentioned after all. Any passenger seated there needs to be briefed that they would need to...
Forum: Computer/Internet Issues & Troubleshooting
15th Sep 2012, 01:17
Replies: 27
Views: 3,067
Posted By lefthanddownabit

My experience of Gmail is good as well, their...

My experience of Gmail is good as well, their spam filter is very accurate and learns quickly. IMAP works a treat, any system that doesn't support it is not worth using unless you have no choice.
...
Forum: Tech Log
1st Dec 2011, 18:40
Replies: 9
Views: 6,041
Posted By lefthanddownabit

The radome antenna is not just forward of the...

The radome antenna is not just forward of the nose gear door, but higher vertically. The vertical positioning of the GS antenna makes a big difference to the main gear touchdown position relative to...
Forum: Tech Log
15th Jul 2009, 15:14
Replies: 36
Views: 7,485
Posted By lefthanddownabit

AirRabbit: I've been in the simulator...

AirRabbit:

I've been in the simulator industry for 30 years. So for the sake of peace and quite I'll ignore the "egg-sucking lessons" you gave me in your lengthy post (I'm well aware of...
Forum: Tech Log
14th Jul 2009, 20:17
Replies: 36
Views: 7,485
Posted By lefthanddownabit

The NTSB report is here: ...

The NTSB report is here:
http://www.ntsb.gov/publictn/2004/AAR0404.pdf

Here's the relevant extract from the training programme as quoted by the NTSB report (page 85).

It's clear a trainee...
Forum: Tech Log
14th Jul 2009, 19:27
Replies: 36
Views: 7,485
Posted By lefthanddownabit

These can be done even in simulators without...

These can be done even in simulators without continuous FOV visuals (with certain constraints relating to scene content). Many FAA Level C sims still have monitor visuals and can be qualified for...
Forum: Tech Log
8th Jul 2009, 19:55
Replies: 92
Views: 16,767
Posted By lefthanddownabit

Quoting Keith.Williams Simply because the...

Quoting Keith.Williams

Simply because the nozzle gives you much more thrust. The purpose of the nozzle is to accelerate the exhaust air and ideally expand the exhaust pressure to ambient. Higher...
Forum: Tech Log
8th Jul 2009, 17:45
Replies: 36
Views: 7,485
Posted By lefthanddownabit

The ICAO document doesn't replace existing NAA...

The ICAO document doesn't replace existing NAA documents such as FAA Part 60 or EASA JAR-FSTD. I'm sure the goal of harmonised simulator design standards is a fine one, but the industry has come...
Forum: Tech Log
16th Sep 2008, 23:16
Replies: 2
Views: 1,133
Posted By lefthanddownabit

You could try searching/asking about support on...

You could try searching/asking about support on these two industry websites.

www.simtechonline.com (http://www.simtechonline.com)

www.simuser.com (http://www.simuser.com)

As well as...
Forum: Rumours & News
20th Jan 2008, 19:40
Replies: 307
Views: 182,169
Posted By lefthanddownabit

If an engine hangs and does not respond to...

If an engine hangs and does not respond to acceleration demand, one way to reset it is to shutdown and relight. Maybe that's what the F/O meant.

The AAIB report does not go into any detail, so...
Forum: Tech Log
20th Jan 2008, 16:07
Replies: 8
Views: 1,298
Posted By lefthanddownabit

Generally speaking: Up until the 1950s...

Generally speaking:

Up until the 1950s everything had reversible manual controls. As aircraft got heavier and flew faster this had to change.

Large and medium sized modern airliners have...
Forum: Tech Log
19th Jan 2008, 23:40
Replies: 8
Views: 1,298
Posted By lefthanddownabit

Elevator movement is due to two effects. 1....

Elevator movement is due to two effects.

1. Changes in elevator aerodynamic hinge moment due to changes in local airflow as the aircraft pitches.

2. Mass unbalance effects in the control...
Forum: Tech Log
4th Aug 2007, 16:35
Replies: 34
Views: 11,179
Posted By lefthanddownabit

I thought it was, on the ground, but having just...

I thought it was, on the ground, but having just looked at the manual I'm not so sure.

It worked in the sim, but a sim is only as good as it's programming.
Forum: Tech Log
4th Aug 2007, 15:52
Replies: 44
Views: 6,996
Posted By lefthanddownabit

This scenario happens to this day, except perhaps...

This scenario happens to this day, except perhaps for the auto ground spoilers bit. Auto brakes and auto spoilers have been around for an awful long time and were integral to the hands on aircraft...
Forum: Tech Log
4th Aug 2007, 15:14
Replies: 34
Views: 11,179
Posted By lefthanddownabit

On the A320 there is nothing to stop the crew...

On the A320 there is nothing to stop the crew operating the speedbrake manually if auto deploy doesn't work.

It would require manually disarming the ground spoilers (pushing the lever down) then...
Forum: Tech Log
11th Jun 2007, 21:05
Replies: 15
Views: 3,530
Posted By lefthanddownabit

Correct. If you don't select the correct CRS the...

Correct. If you don't select the correct CRS the autopilot will track the localiser but offset to one side or the other. The bigger the CRS error, the bigger the offset. It will be trying to maintain...
Forum: Tech Log
1st Jun 2007, 13:03
Replies: 7
Views: 1,395
Posted By lefthanddownabit

I don't know about the 737-300 specifically but...

I don't know about the 737-300 specifically but on some aircraft antiskid does cause noticeable vibration. Although this is not part of the designed motion buffet model, nor is it on the list of...
Forum: Tech Log
1st Jun 2007, 12:52
Replies: 5
Views: 2,197
Posted By lefthanddownabit

All the Boeing Manuals have gone, so I suppose...

All the Boeing Manuals have gone, so I suppose Boeing claimed copyright and demanded their removal.
Forum: Tech Log
24th May 2007, 20:12
Replies: 16
Views: 2,994
Posted By lefthanddownabit

You can have slotted Krueger Flaps too. The real...

You can have slotted Krueger Flaps too. The real difference is that the Variable Camber Flaps change camber during extension, the flexible panel bending around the four bar linkage underneath....
Forum: Tech Log
19th May 2007, 20:42
Replies: 18
Views: 2,728
Posted By lefthanddownabit

Maybe because the Fokker 70/100 has an...

Maybe because the Fokker 70/100 has an auto-throttle, whereas the F.28 did not?
Forum: Tech Log
18th May 2007, 00:41
Replies: 4
Views: 1,386
Posted By lefthanddownabit

To actually try and answer the question, in some...

To actually try and answer the question, in some cases yes, in others no.

Pratt & Whitney currently use a system where the last two digits represent the rated TO thrust, so a PW4056 produces...
Forum: Tech Log
17th May 2007, 23:23
Replies: 18
Views: 2,728
Posted By lefthanddownabit

On the Avro RJ/BAe 146, and on the Fokker F.28...

On the Avro RJ/BAe 146, and on the Fokker F.28 come to that, the speedbrake is variable position. So the pilot can use as much or as little as needed. It's not so much mandatory as useful.

In the...
Forum: Tech Log
17th May 2007, 23:05
Replies: 4
Views: 6,004
Posted By lefthanddownabit

The AOA for minimum drag (i.e. best L/D) is not...

The AOA for minimum drag (i.e. best L/D) is not affected by flight path angle, so whether you are gliding, in level flight or climbing it will be the same. That translates to the same airspeed, for a...
Forum: Tech Log
24th Apr 2007, 15:34
Replies: 16
Views: 3,094
Posted By lefthanddownabit

Ironic then that the engine used on the...

Ironic then that the engine used on the "unsuccessful" MD-90 was the IAE V2500. ;)

McD-D sold over 1,000 MD-80s and MD-87s, so there have got to be plenty of JT8D-200 engines in circulation, not...
Forum: Tech Log
21st Apr 2007, 16:19
Replies: 16
Views: 3,094
Posted By lefthanddownabit

The MD-90 was 4.5 feet longer than the MD-80...

The MD-90 was 4.5 feet longer than the MD-80 series, higher weights, more powerful engines. So it was the most stretched variant of the basic DC-9 design.

Not sure why 5 across seating counts as...
Forum: Tech Log
21st Apr 2007, 15:26
Replies: 59
Views: 31,119
Posted By lefthanddownabit

I wasn't forgetting that, and I recognise that...

I wasn't forgetting that, and I recognise that makes for a powerful engineering based sim design tool. But as I say, you won't find that sort of model breakdown even on a Level D FFS, which generally...
Forum: Tech Log
19th Apr 2007, 22:03
Replies: 59
Views: 31,119
Posted By lefthanddownabit

Lookup tables, how they really work!

XPMorten said:
You have completely misunderstood how lookup tables work. There are no tables of performance versus weight, or anything else. What you have is this:

For each aero coefficient,...
Forum: Tech Log
19th Apr 2007, 21:03
Replies: 59
Views: 31,119
Posted By lefthanddownabit

Hi AirRabbit Presumably the angles...

Hi AirRabbit

Presumably the angles mentioned in the report are from the FDR. To most people in the cabin 50 degrees bank will feel more like 90. Even the flight crew might initially overestimate...
Forum: Tech Log
19th Apr 2007, 14:50
Replies: 59
Views: 31,119
Posted By lefthanddownabit

Hi AirRabbit, Thanks for the link. Since...

Hi AirRabbit,

Thanks for the link. Since the flight controls on the A300-600 are irreversible, after AP disconnect any control oscillations would have to come from the flight crew surely?...
Forum: Tech Log
18th Apr 2007, 21:30
Replies: 27
Views: 6,092
Posted By lefthanddownabit

Those Boeing test flights are for certification...

Those Boeing test flights are for certification at extreme crosswinds, with no passengers on board to complain. :eek:

I think it's instructive to see what the autopilot does, as "George" has no...
Forum: Tech Log
18th Apr 2007, 17:39
Replies: 59
Views: 31,119
Posted By lefthanddownabit

XPMorten said: That's not strictly true. You...

XPMorten said:

That's not strictly true. You enter the 2D aerodynamic data (lift, drag, pitching moment) for an aerofoil. X-Plane can't take the aerofoil shape and calculate it's properties from...
Forum: Tech Log
18th Apr 2007, 14:47
Replies: 6
Views: 3,776
Posted By lefthanddownabit

Switching to ON from OFF opens the APU door and...

Switching to ON from OFF opens the APU door and the fuel valve, arms the APU bleed isolation valve and activates the fuel pump (DC or AC). If you put the switch to START then release it to ON, all...
Showing results 1 to 35 of 43
 
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