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Search: Posts Made By: FE Hoppy
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Forum: Tech Log
21st Feb 2019, 17:19
Replies: 5
Views: 623
Posted By FE Hoppy

Pressure at the intake of the compressor is low....

Pressure at the intake of the compressor is low. Pressure at the exit of the compressor is high. The air would prefer to move from high to low (that would be a surge). The only thing that prevents it...
Forum: Tech Log
15th Feb 2019, 12:24
Replies: 11
Views: 1,394
Posted By FE Hoppy

In the dim and distant past I flew a 4 engine...

In the dim and distant past I flew a 4 engine type where we frequently shut down 1 and occasionally 2 engines to save fuel. we also relit them mostly. If a rotor isn't turning when you have airspeed,...
Forum: Tech Log
12th Feb 2019, 16:49
Replies: 8
Views: 1,440
Posted By FE Hoppy

Correct but you haven't cooled the outside air....

Correct but you haven't cooled the outside air. it was -56c and now it's considerably warmer!

One of the wonders of the traditional air cycle machine is that it is self powering. Take your bleed...
Forum: Tech Log
12th Feb 2019, 16:32
Replies: 19
Views: 1,682
Posted By FE Hoppy

Same principle as the Laseref from what used to...

Same principle as the Laseref from what used to be Honeywell and not much lighter. Must be cheaper. ISIS uses piezo gyros as far as I remember.
Forum: Tech Log
11th Feb 2019, 17:40
Replies: 8
Views: 1,440
Posted By FE Hoppy

Pressurise and COOL! err........

Pressurise and COOL!
err........
11th Feb 2019, 17:29
Replies: 24
Views: 11,981
Posted By FE Hoppy

Ive only ever seen one aircraft jump a chock. ...

Ive only ever seen one aircraft jump a chock.
C130 on startup.
Airframe totalled.
Full crew at the controls.
Ground Engineer on long lead moved faster than the wind.
9th Feb 2019, 14:37
Replies: 29
Views: 18,155
Posted By FE Hoppy

^^^^^^^^^WORD^^^^^^^^!

^^^^^^^^^WORD^^^^^^^^!
9th Feb 2019, 14:36
Replies: 29
Views: 18,155
Posted By FE Hoppy

Having had smoke in the Atlantic (at low level) I...

Having had smoke in the Atlantic (at low level) I can assure you it's not fun and not something you dick about with. In my case it was a windshield heating controller which I eventually found but...
Forum: Tech Log
9th Feb 2019, 14:31
Replies: 13
Views: 1,848
Posted By FE Hoppy

It's just ego. If the co-pilot can't taxi why...

It's just ego.
If the co-pilot can't taxi why let him/her fly?
Forum: Tech Log
9th Feb 2019, 14:28
Replies: 16
Views: 2,487
Posted By FE Hoppy

A very long time ago. You can't use brushes...

A very long time ago. You can't use brushes without sparks and the less dense the atmosphere the bigger the spark. Aircraft Gennys have been brushless since the 50/60s.
Forum: Tech Log
5th Feb 2019, 19:10
Replies: 3
Views: 907
Posted By FE Hoppy

You can't fly an "overlay" on a localiser...

You can't fly an "overlay" on a localiser approach. Primary nav source has to be the localiser. And it can't do GBAS.
5th Feb 2019, 19:05
Replies: 44
Views: 46,332
Posted By FE Hoppy

Why the rush to shut down engines. If it's...

Why the rush to shut down engines. If it's vibrating it's vibrating. Wait until everything else is sorted then both of you take your time to identify the problem. Wait long enough and it will resolve...
Forum: Tech Log
4th Feb 2019, 21:40
Replies: 3
Views: 1,807
Posted By FE Hoppy

Considerably more information required! ...

Considerably more information required!
Aircraft Type?
Sim manufacturer?
FMS type?
On FMS track or in Heading mode?
Forum: Tech Log
26th Jan 2019, 23:48
Replies: 41
Views: 7,665
Posted By FE Hoppy

CS has a minimum take off weight defined by the...

CS has a minimum take off weight defined by the deceleration rate in case of engine failure during capture mode.
Took a while to get my head round it but it's summarised thus:

Light weight gives...
Forum: Tech Log
17th Jan 2019, 00:49
Replies: 24
Views: 3,049
Posted By FE Hoppy

The only tricky bit I think is finding the...

The only tricky bit I think is finding the correct N1 (EPR) as it requires a density correction which I have found is not cross engine compatible so you need some specific engine data to correct. But...
Forum: Tech Log
15th Jan 2019, 01:00
Replies: 24
Views: 3,049
Posted By FE Hoppy

At 60C 100kt indicated is 108 TAS At 30C...

At 60C 100kt indicated is 108 TAS
At 30C 100kt indicated is 103 TAS

As above.
Forum: Tech Log
15th Jan 2019, 00:57
Replies: 13
Views: 3,141
Posted By FE Hoppy

Take your headset off and shout at the side...

Take your headset off and shout at the side window.
Always found this to be as effective as keying the mic in the South Atlantic.
Forum: Tech Log
11th Dec 2018, 12:41
Replies: 29
Views: 3,101
Posted By FE Hoppy

Auto call outs do it at V1. Ive seen a lot of...

Auto call outs do it at V1. Ive seen a lot of airlines SOPs. Probably 60 or more over the years. Most call AT v1. A couple of years ago some changed to calling x kt before but most have changed back...
Forum: Tech Log
5th Dec 2018, 21:12
Replies: 20
Views: 2,181
Posted By FE Hoppy

I'm tempted to think it may be because...

I'm tempted to think it may be because contaminated perf data comes direct from the manufacturer at fixed thrust values. Rated and/or de-rated. Whereas flex calculations involve the user modifying...
30th Nov 2018, 20:45
Replies: 37
Views: 11,641
Posted By FE Hoppy

There is a difference between calling it a...

There is a difference between calling it a "planetary gear-set" and referring to the star gears as planets.
By doing so the poster is incorrectly describing the way the gearing works as planets...
30th Nov 2018, 20:28
Replies: 37
Views: 11,641
Posted By FE Hoppy

Yep can't see it unless you take the fan off.

Yep can't see it unless you take the fan off.
30th Nov 2018, 10:59
Replies: 37
Views: 11,641
Posted By FE Hoppy

not according to the PW operating instructions,...

not according to the PW operating instructions, the AMP, the MTM and the FCOM all of which I have open in front of me
29th Nov 2018, 18:58
Replies: 37
Views: 11,641
Posted By FE Hoppy

HPT, HPC and FAN all turn anticlockwise viewed...

HPT, HPC and FAN all turn anticlockwise viewed from the front. LPT and LPC turn the opposite way.
29th Nov 2018, 18:50
Replies: 37
Views: 11,641
Posted By FE Hoppy

except it's sun and stars. They are fixed.

except it's sun and stars. They are fixed.
28th Nov 2018, 19:54
Replies: 37
Views: 11,641
Posted By FE Hoppy

Great! Another round of inspections. That's a...

Great! Another round of inspections.
That's a hell of a failure. Wonder how long it takes to produce a full suite of new gearbox casings for all the PW1000s out there?
Showing results 1 to 25 of 1000
 


 
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