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22nd Feb 2021, 11:45
Replies: 46
Views: 8,616
Posted By henra

Will CAD/CAM solve the...

Will CAD/CAM solve the Software/Avionics/Optronics development issues that plague today's Aircraft programmes 10x more than the mechanical design of the aircraft?
22nd Feb 2021, 10:58
Replies: 46
Views: 8,616
Posted By henra

I do understand your general point. But why would...

I do understand your general point. But why would you put them on a project that should deliver a 'bog standard' design, where copying of existing solutions would be the most viable approach.(If I...
22nd Feb 2021, 10:05
Replies: 46
Views: 8,616
Posted By henra

In this category the World's Benchmark...

In this category the World's Benchmark undoubtedly has to be the German Armed Forces Procurement. No one comes close to them in inflating requirements to the point of derailing every project. If it's...
7th Feb 2021, 09:04
Replies: 675
Views: 660,259
Posted By henra

Which pretty much eliminates the 'catastrophic'...

Which pretty much eliminates the 'catastrophic' scenario.
20th Jan 2021, 19:16
Replies: 675
Views: 660,259
Posted By henra

Back at NH Reads a bit like a minor...

Back at NH

Reads a bit like a minor technically issue leading to a wrong/disastrous handling by the chaps in the front office.
Forum: Rotorheads
20th Jan 2021, 19:06
Replies: 163
Views: 68,744
Posted By henra

Possibly compounded by the terrain. These ravines...

Possibly compounded by the terrain. These ravines can act as funnels if the wind is pointing straight onto them and create much stronger local winds. If I interpret the situation correctly it went...
12th Jan 2021, 16:40
Replies: 675
Views: 660,259
Posted By henra

Blake.Waterman 27y/o airframe or not. Ripped...

Blake.Waterman

27y/o airframe or not. Ripped of Vertical stabilizer is an extremely rare occurrence and more importantly will in all likelyhood lead to a much less stable terminal flight profile....
10th Jan 2021, 18:46
Replies: 675
Views: 660,259
Posted By henra

Stall at 280kts? in a 737 with 56 Pax on a one...

Stall at 280kts? in a 737 with 56 Pax on a one hour flight?

It was around 15:00 local time !?
10th Jan 2021, 18:43
Replies: 675
Views: 660,259
Posted By henra

4 minutes after take- off?

4 minutes after take- off?
Forum: Rotorheads
6th Jan 2021, 09:08
Replies: 238
Views: 88,088
Posted By henra

The mission isn't going away but the question...

The mission isn't going away but the question remains if they are not too expensive/complex, too big and too fragile for the mission.
The big plus of the Blackhawk for this mission is that it is...
4th Oct 2020, 14:50
Replies: 298
Views: 87,592
Posted By henra

But that would apply to all current Fighters...

But that would apply to all current Fighters (maybe apart from the Gripen). Be it EF, Rafale, newest F-15, F-16, F-18. Doesn't make that much of a difference. Ok you might be able to afford 18 ...
Forum: Rotorheads
4th Oct 2020, 11:16
Replies: 63
Views: 17,020
Posted By henra

They might want to understand how close to real...

They might want to understand how close to real disaster this was.
Even a ditching (notwithstanding a fatal crash) in cozy Norwegian Winter North Sea conditions is something they would dearly like...
8th Aug 2020, 14:00
Replies: 99
Views: 26,332
Posted By henra

Hmm, I don't see what's really changed here....

Hmm, I don't see what's really changed here. Incoming ballistic missiles e.g. from US to Russia (and for sure before to Soviet Union) would surely have raised the question of response probably not...
7th Aug 2020, 14:09
Replies: 99
Views: 26,332
Posted By henra

You don't have to rely on 'crazy Russia' to see...

You don't have to rely on 'crazy Russia' to see that on internationjal level military power is used regularly to forward own interests (however justified they might even be from our perspective)....
31st May 2020, 14:09
Replies: 1,668
Views: 2,710,869
Posted By henra

Are we positive, we are going to see this paper...

Are we positive, we are going to see this paper still in this decade?
26th May 2020, 19:56
Replies: 1,668
Views: 2,710,869
Posted By henra

Hmm, with Flaps 3 that could probably be doable....

Hmm, with Flaps 3 that could probably be doable. Leaving decelleration aside that would be a glide ratio of 15. That's about what the Bus would do in clean config at that speed. With Slats and flaps...
26th May 2020, 15:50
Replies: 1,668
Views: 2,710,869
Posted By henra

A teardrop maneuver might have been the ticket to...

A teardrop maneuver might have been the ticket to a possible survival in this case. Gear up is a good question. Dpends also when they did extend it. If it was down during the whole circuit it could...
26th May 2020, 10:51
Replies: 1,668
Views: 2,710,869
Posted By henra

This was tested before with pretty much the same...

This was tested before with pretty much the same survival time of the engines. 90s.
We seem to find volunteers for all imaginable and also for the unimaginable mishap scenarios.
In 2018 Smartlynx...
26th May 2020, 08:36
Replies: 1,668
Views: 2,710,869
Posted By henra

Have you seen the speeds in the above charts? At...

Have you seen the speeds in the above charts? At 220 kts there will be no sink if you pull that nice little handle on the side panel (not with flaps in 3,2,1, or clean). That's so much energy that...
25th May 2020, 13:19
Replies: 1,668
Views: 2,710,869
Posted By henra

That also crossed my mind... I'm always alerted...

That also crossed my mind...
I'm always alerted when there are fixed fines defined for cases where in reality the world can be more complex. I do understand that if the requirement is to be...
25th May 2020, 09:27
Replies: 1,668
Views: 2,710,869
Posted By henra

Hmmm, dunno. Are we really discussing about...

Hmmm, dunno. Are we really discussing about making airliners tolerant against landing on the engines and still being able to fly away afterwards???
How about not landing on the pods in the first...
24th May 2020, 18:13
Replies: 1,668
Views: 2,710,869
Posted By henra

No, looking at the discrete data your maths do...

No, looking at the discrete data your maths do look correct. It is easy to misjudge the timings from the graphs a bit, which I obviously did.
OK, 1700fpm seems reasonable. That should be roughly...
24th May 2020, 17:19
Replies: 1,668
Views: 2,710,869
Posted By henra

No I won't call you an accident waiting to...

No I won't call you an accident waiting to happen. It is fine as long as you have got enough space and time left for the final approach to dissipate the energy and stabilise and don't have to rush...
24th May 2020, 16:14
Replies: 1,668
Views: 2,710,869
Posted By henra

Maybe they tried to lower the gear even earlier,...

Maybe they tried to lower the gear even earlier, e.g. already during the steep descent from 10k? At that altitude and looking at the general descent profile, 260kts would not appear completely...
24th May 2020, 16:10
Replies: 1,668
Views: 2,710,869
Posted By henra

It is surely on the high side. Would have been OK...

It is surely on the high side. Would have been OK if they had space to dissipate the energy for the final approach. But with that descent rate even with engines at idle you will arrive at 10k on the...
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