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Forum: Jet Blast
13th May 2019, 20:20
Replies: 31
Views: 3,947
Posted By Running Ridges

Not an expert but I did borrow / dogsit one for a...

Not an expert but I did borrow / dogsit one for a week. It was great fun, relentlessly energetic despite his age. Easily distracted though! Any time there was water in sight, he was off and only came...
18th Mar 2019, 16:35
Replies: 5,129
Views: 10,178,968
Posted By Running Ridges

Sounds like they were stuck between a rock and a...

Sounds like they were stuck between a rock and a hard place

Reduce thrust - immediate reaction is a slight reduction in pitch due to thrust coupling but maybe they would slow down and recover...
15th Mar 2019, 13:27
Replies: 5,129
Views: 10,178,968
Posted By Running Ridges

Really? From what I can see Vmo is 340kts on the...

Really? From what I can see Vmo is 340kts on the -800, not sure about the MAX but can't imagine it's different
383kts TAS is 339kts EAS at 8000'
15th Mar 2019, 13:18
Replies: 921
Views: 2,113,958
Posted By Running Ridges

They move the lift distribution outboard, so if...

They move the lift distribution outboard, so if you're pulling 2g with the speedbrakes out the root bending moment will be higher compared to a 2g manouevre with a clean wing.
In any case I doubt...
13th Mar 2019, 16:36
Replies: 5,129
Views: 10,178,968
Posted By Running Ridges

True, but then he kept on talking about it as...

True, but then he kept on talking about it as 'new data received this morning'. The ADS-B data is hardly new
13th Mar 2019, 13:11
Replies: 908
Views: 930,182
Posted By Running Ridges

As has been discussed to death in the main...

As has been discussed to death in the main accident thread, MCAS is there to counteract the decreased aerodynamic pitching moment stability vs. alpha, not the thrust-pitch coupling effect
13th Mar 2019, 12:52
Replies: 5,129
Views: 10,178,968
Posted By Running Ridges

Just a thought RE: eye witness accounts of smoke,...

Just a thought RE: eye witness accounts of smoke, debris, strange noises etc.

The last FR24 data point has the A/C at 383kts GS. At 8000' that's 339kts EAS (assuming still air) which is perilously...
10th Mar 2019, 19:57
Replies: 5,129
Views: 10,178,968
Posted By Running Ridges

Does that not sound more like an APU issue than...

Does that not sound more like an APU issue than an engine issue?
Lack of Air Conditioning before start + unusual start procedure
5th Mar 2019, 23:27
Replies: 41
Views: 28,939
Posted By Running Ridges

'Negative and vitriolic feedback' from who?

'Negative and vitriolic feedback' from who?
Forum: Tech Log
16th Nov 2017, 18:14
Replies: 10
Views: 3,611
Posted By Running Ridges

Interesting... How does it improve comfort?...

Interesting... How does it improve comfort? Automated rudder inputs to counter it?
Forum: Tech Log
8th Oct 2017, 15:11
Replies: 3
Views: 1,303
Posted By Running Ridges

Of course, but I'm not sure this part: ...

Of course, but I'm not sure this part:



(at constant mach) is true to any meaningful degree for a real life situation. There is a dependancy of CLmax on Re, but the difference between say Re...
Forum: Tech Log
8th Oct 2017, 12:12
Replies: 3
Views: 1,303
Posted By Running Ridges

I'm not sure the Re effect on CLmax is...

I'm not sure the Re effect on CLmax is particularly significant. CLmax does decrease with altitude, but mainly because your Mach no. is increasing for a given EAS/IAS, and you start to get...
9th Feb 2017, 19:45
Replies: 61
Views: 17,275
Posted By Running Ridges

MPA Student, Sounds very familiar!...

MPA Student,

Sounds very familiar! Definitely a good idea to get some feedback here, nothing like hearing it from the horse's mouth.

Interesting what Avtur said about the Mission Console...
3rd Oct 2016, 22:39
Replies: 61
Views: 17,275
Posted By Running Ridges

Thanks :ok:, that's exactly the sort of anecdotal...

Thanks :ok:, that's exactly the sort of anecdotal stuff I'm looking for. any other titbits where that came from?
29th Sep 2016, 22:02
Replies: 61
Views: 17,275
Posted By Running Ridges

Thanks for the feedback and tips so far ...

Thanks for the feedback and tips so far



No need for actual recovery in this case, more the "S" part of SAR



I'm looking at long range missions, so fixed wing is probably the only way to...
26th Sep 2016, 19:08
Replies: 61
Views: 17,275
Posted By Running Ridges

Maritime Patrol Aircraft - Best/Worst Features

Evening all!

I've been assigned a Uni Project, with brief to design a clean sheet Maritime SAR / Submarine Hunting aircraft. I thought this might be a good place to canvas some opinion on what...
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