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Search: Posts Made By: 911slf
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18th Nov 2022, 11:12
Replies: 22
Views: 4,562
Posted By 911slf

What is the switch marked "DANGER". I have itchy...

What is the switch marked "DANGER". I have itchy finger syndrome!
4th Nov 2022, 13:39
Replies: 52
Views: 6,483
Posted By 911slf

If you want to be ultra-pessimistic read Jim Al...

If you want to be ultra-pessimistic read Jim Al Khalili's book "Sunfall" which postulates a coronal mass ejection hitting Earth just at the point when the magnetic field passes through a temporary...
5th Aug 2022, 11:14
Replies: 42
Views: 11,029
Posted By 911slf

The second battle is the one the Turks like to...

The second battle is the one the Turks like to focus on because it was decisive (for a few centuries at least). It's anyone's guess as to when the next battle will be fought.

I claim no expertise...
3rd Aug 2022, 11:47
Replies: 42
Views: 11,029
Posted By 911slf

History not only repeats, it gets worse

A few years ago on holiday in Istanbul I went to the military museum. On display was what was claimed to be the original Ottoman flag flown at the battle of Kosovo in 1448 (but it looked like a...
11th Jul 2022, 23:14
Replies: 62
Views: 16,436
Posted By 911slf

Yes, agreed. On further enquiry freeboard is the...

Yes, agreed. On further enquiry freeboard is the height above the sea up to which there needs to be watertight bulkheads and watertight doors. I can imagine hangars, and even more so the load decks...
11th Jul 2022, 11:40
Replies: 62
Views: 16,436
Posted By 911slf

Freeboard?

Is the height of the deck above water not called "freeboard"? Wikipedia says the beam of this class is 134 feet.
1st Jun 2022, 17:35
Replies: 280
Views: 123,152
Posted By 911slf

oxygen masks and beer

This is too good to not have another outing.

Carling Black Label - Dambusters (1989, UK) - YouTube
13th May 2022, 21:50
Replies: 155
Views: 26,607
Posted By 911slf

Luckyrat. Go to Hull for your holidays. ...

Luckyrat.


Go to Hull for your holidays. Russians don't know how to pronounce "H" and they call it Goole - really! If they ever target it, they will miss.

Don't go to Goole!!!

If you want...
5th May 2022, 20:17
Replies: 57
Views: 25,263
Posted By 911slf

Only one fully qualified pilot?

If the FO is new and not fully qualified, is it the case that there should be a third pilot on the flight deck? If the captain is incapacitated, it makes no odds whether he/she is a qualified...
31st Mar 2022, 20:42
Replies: 84
Views: 26,761
Posted By 911slf

I would like to think that nuclear weapons would...

I would like to think that nuclear weapons would not be mistaken for anything else - but what about this story? B-52 mistakenly flew with nuclear bombs - Los Angeles Times (latimes.com)...
29th Nov 2021, 15:03
Replies: 72
Views: 13,480
Posted By 911slf

Some in safety better than arbitrary number with casualties

Some are always going to make it. Most are not going to be sent back. If we showed willing by setting up an immigration/asylum centre in France and agreed to take "N" where "N" is somewhat less than...
1st Sep 2021, 23:43
Replies: 22
Views: 4,469
Posted By 911slf

On motion simulators, I recall an amusement...

On motion simulators, I recall an amusement arcade ride where you simulated a combat mission from an aircraft carrier. Expensive at £3 a go but it had 360 degree motion in pitch and roll and was...
Forum: Rotorheads
4th Jun 2021, 00:32
Replies: 21
Views: 4,096
Posted By 911slf

Cheapest scheduled helicopter flight

A winter return flight to Lundy from Hartland point cost £137 per person in an Agusta 109. It is only a seven minute flight though - which is fine if you really want to go to Lundy in the winter. ...
5th May 2021, 10:56
Replies: 30
Views: 8,580
Posted By 911slf

Well ,yes but...

If I understood this report correctly the offender is 20 now but was 17 when the offences took place in 2018. They were basically the swapping of nude photos. Probably 40% of teenagers do this. ...
2nd Apr 2021, 20:34
Replies: 88
Views: 18,085
Posted By 911slf

In post 60 I should have called the unit I was...

In post 60 I should have called the unit I was using poundals, not pounds force. Otherwise correct. I am more accustomed to metric.
13th Feb 2021, 23:49
Replies: 88
Views: 18,085
Posted By 911slf

I forgot that one pound force is the force...

I forgot that one pound force is the force exerted by a mass of one pound under gravity of one foot per second^2, not earth gravity of 32 feet per second^2.

Divide my figures by 32. 80,000/32 =...
6th Feb 2021, 17:02
Replies: 88
Views: 18,085
Posted By 911slf

momentum same in both directions

It always was the same. It's the kinetic energy that kills you.

Imagine a ten pound gun firing a one ounce bullet at 1600 feet per second. It will recoil at ten feet per second. Momentum is 10*10...
20th Jan 2021, 17:41
Replies: 450
Views: 119,841
Posted By 911slf

Nothing to prove

When I was a young and junior civil servant I was told that a retired army major was going to be on my staff. I had my concerns but he was absolutely fine to work with. He did not feel he had...
23rd Dec 2020, 15:08
Replies: 909
Views: 287,251
Posted By 911slf

Quite a few of the animals at Doncaster Wildlife...

Quite a few of the animals at Doncaster Wildlife Park arrived by air. Lions and tigers and bears - oh my!
6th Dec 2020, 19:43
Replies: 39
Views: 12,422
Posted By 911slf

Not true about Brexit

Probably more in this link than you are willing to read, but it gives chapter and verse on why your statement is not true.
...
Forum: Questions
6th Jul 2020, 12:16
Replies: 12
Views: 5,199
Posted By 911slf

If you have to be at 160kt to four miles and 'on...

If you have to be at 160kt to four miles and 'on speed' at 1,000 feet (3 miles?) how much can you slow down in one mile? My guess is maybe 20kt. Presumably you don't use airbrakes. Does this mean...
1st Mar 2020, 01:26
Replies: 30
Views: 10,124
Posted By 911slf

Sunken glandys

See Private Eye. Brainless and headless!
26th Jan 2020, 16:58
Replies: 14
Views: 2,057
Posted By 911slf

40% alcohol by volume is 70 degrees proof spirit...

40% alcohol by volume is 70 degrees proof spirit in UK, or 80 degrees proof spirit in USA. This is the most common strength in UK, higher strengths are available. This will easily light, as I...
1st Dec 2019, 16:44
Replies: 50
Views: 32,324
Posted By 911slf

I dare say that it is often necessary to go...

I dare say that it is often necessary to go supersonic when intercepting something cruising at around M 0.8. Given the amount of fuss this generated, does anyone seriously believe there is an...
12th Nov 2019, 09:46
Replies: 38
Views: 14,832
Posted By 911slf

The lack of an aircraft carrier when apparently...

The lack of an aircraft carrier when apparently they were always needed is indeed a matter of public record.

To have only four submarines over a thirty year period is running dangerously close to...
11th Nov 2019, 23:51
Replies: 38
Views: 14,832
Posted By 911slf

Trident/Carriers

If we need aircraft carriers does it matter that we will have gone a decade without them?

If we need Trident does a gap of ten years in capability matter (whether for political or other reasons)?...
25th Jul 2019, 13:26
Replies: 4,656
Views: 4,562,381
Posted By 911slf

Supervised gym session? What is new? What about...

Supervised gym session? What is new? What about leg strength to control 707 in go around without rudder boost?
17th Mar 2019, 18:22
Replies: 5,120
Views: 11,224,549
Posted By 911slf

So how often does MCAS operate?

Naive question from slf. I seem to recall that T tail aircraft had stick pushers that operated if you got very close to the stall, but that you normally would not get that close.

At what angle of...
Forum: Tech Log
20th Aug 2018, 20:28
Replies: 117
Views: 23,539
Posted By 911slf

ancient memory

Vilas said
I remember one particular day in late 1964 watching aircraft landing on a very gusty day at Heathrow, and noticing that the 707s were rocking quite a bit but the VC10s not at all....
3rd Aug 2018, 20:39
Replies: 31
Views: 13,652
Posted By 911slf

Dunning-Kruger effect

This from Wikipedia.

In the field of psychology (https://en.wikipedia.org/wiki/Psychology), the Dunning–Kruger effect is a cognitive bias (https://en.wikipedia.org/wiki/Cognitive_bias) in which...
20th Jul 2018, 10:57
Replies: 211
Views: 71,590
Posted By 911slf

Woulda coulda shoulda

A380 should have been built with 300 foot wingspan, folding to 200 feet. I see there has been talk of longer wingspan https://www.telegraph.co.uk/travel/news/airbus-a380-winglets-bigger-wing-span/
...
Forum: Tech Log
13th Jul 2018, 23:15
Replies: 330
Views: 44,793
Posted By 911slf

I am a bit cautious of entering such august...

I am a bit cautious of entering such august company, being only a former hang glider pilot. But two things:

1 In a constantly moving air mass my experience was that a turn in any direction felt...
21st Oct 2017, 17:20
Replies: 271
Views: 107,009
Posted By 911slf

How good is good enough?

There seems to be a range of opinions from "nothing to see - move along" through to "this warrants a formal investigation". How does one distinguish between "barely acceptable" and "good" flying...
28th Aug 2017, 18:08
Replies: 5
Views: 1,880
Posted By 911slf

ah, well ask a daft question and get....

Thank you. I have heard of, and mentioned, clouds. :-) And Wikipedia, which tells me

The percentage water vapor in surface air varies from 0.01% at -42 °C (-44 °F)[16] to 4.24% when the dew...
26th Aug 2017, 15:08
Replies: 5
Views: 1,880
Posted By 911slf

How is cabin humidity managed?

The 787 claims to have higher humidity in the cabin. It is said that the composite construction enables this to be achieved without creating corrosion problems. Also the cabin altitude is around...
Showing results 1 to 35 of 144
 


 
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