Search found 14180 matches

by keesje
Sun Oct 04, 2020 4:45 pm
Forum: Military Aviation & Space Flight
Topic: German Heavy Lift Helicopter Replacement Program News and Discussion Thread
Replies: 263
Views: 81418

Re: German Heavy Lift Helicopter Replacement Program News and Discussion Thread

LOL, I get the sarcasm, but I still don’t see how that planform can fit into a similar footprint. Just a few posts up folks were pointing out how one or another option could fit in an A-400M etc. The Racer / X3 or back when Fairy Rotodyne layout would not need parasite transport. They are fast enou...

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by keesje
Sun Oct 04, 2020 9:18 am
Forum: Non-Aviation
Topic: Five Word Story Thread - Q4 2020
Replies: 101
Views: 8907

Re: Five Word Story Thread - Q4 2020

shut up, unite and embrace ..

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by keesje
Sun Oct 04, 2020 9:05 am
Forum: Non-Aviation
Topic: Hope Hicks. President Trump and wife all test positive for COVID
Replies: 332
Views: 24145

Re: Hope Hicks. President Trump and wife all test positive for COVID

Trump must retire, take care of his grand children, go back in business. Best for every one. Have Pen run the show for the next three months (short enough to avoid un-charitable laws) and have 2 fresh new candidates decently compete. Both in their forties, not poisoned by the crazy polarisation that...

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by keesje
Sat Oct 03, 2020 10:47 pm
Forum: Civil Aviation
Topic: Rumor: DL looking to trade 717s for 737 Max
Replies: 731
Views: 137706

Re: Rumor: DL looking to trade 717s for 737 Max

I guess Delta is in survival mode and will stick to 737NG, A330CEO as long as possible and convert orders to A321XLR's to carefully keep/ restore it international flights. Park 757, 767s, 717sand add A320s, 737-8 that become available from lessors, failing airlines and A220s. There has been nothing...

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by keesje
Sat Oct 03, 2020 8:17 pm
Forum: Civil Aviation
Topic: Rumor: DL looking to trade 717s for 737 Max
Replies: 731
Views: 137706

Re: Rumor: DL looking to trade 717s for 737 Max

I guess Delta is in survival mode and will stick to 737NG, A330CEO as long as possible and convert orders to A321XLR's to carefully keep/ restore it international flights. Park 757, 767s, 717sand add A320s, 737-8 that become available from lessors, failing airlines and A220s.

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by keesje
Sat Oct 03, 2020 7:34 pm
Forum: Non-Aviation
Topic: Hope Hicks. President Trump and wife all test positive for COVID
Replies: 332
Views: 24145

Re: Hope Hicks. President Trump and wife all test positive for COVID

Navy Commander Dr. Sean Conley statements might highlight another virus. The virus created by the Trump family and inner circle that twisting the truth and saying things that are incorrect is basically ok. Just say everybody else is lying and you'll get away with it, the bigger public will get used ...

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by keesje
Sat Oct 03, 2020 12:25 pm
Forum: Non-Aviation
Topic: Hope Hicks. President Trump and wife all test positive for COVID
Replies: 332
Views: 24145

Re: Hope Hicks. President Trump and wife all test positive for COVID

Honestly Trump has demonstrated and promoted not to be carefull towards Covid-19 infection. He has. It's well documented and confirmed by himself this week on television. Sorry.

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by keesje
Sat Oct 03, 2020 10:11 am
Forum: Non-Aviation
Topic: Hope Hicks. President Trump and wife all test positive for COVID
Replies: 332
Views: 24145

Re: Hope Hicks. President Trump and wife all test positive for COVID

Can we somehow blame the Dem's for this, or is it just out right stupidity.

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by keesje
Fri Oct 02, 2020 6:51 pm
Forum: Military Aviation & Space Flight
Topic: German Heavy Lift Helicopter Replacement Program News and Discussion Thread
Replies: 263
Views: 81418

Re: German Heavy Lift Helicopter Replacement Program News and Discussion Thread

Serious question, as I’m not sure I follow, keesje but what components of the RACER could be applied to this class of helicopter? I almost assume any Chinook replacement would necessarily be a tilt-rotor of some sort. Europe certainly has experienced/capable players there in AW/Leonardo, but it wou...

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by keesje
Fri Oct 02, 2020 3:56 pm
Forum: Military Aviation & Space Flight
Topic: German Heavy Lift Helicopter Replacement Program News and Discussion Thread
Replies: 263
Views: 81418

Re: German Heavy Lift Helicopter Replacement Program News and Discussion Thread

The Chinooks are spacey, have generous cg tolerance, have the huge back door and are fast and agile. So competing / beating it with something better at acceptable costs is going to be a challenge for anyone. That proved to be the case for the last 50 years.. The market is significant, looking at al...

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by keesje
Fri Oct 02, 2020 6:43 am
Forum: Military Aviation & Space Flight
Topic: German Heavy Lift Helicopter Replacement Program News and Discussion Thread
Replies: 263
Views: 81418

Re: German Heavy Lift Helicopter Replacement Program News and Discussion Thread

The Chinooks are spacey, have generous cg tolerance, have the huge back door and are fast and agile. So competing / beating it with something better at acceptable costs is going to be a challenge for anyone. That proved to be the case for the last 50 years.. The market is significant, looking at all...

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by keesje
Thu Oct 01, 2020 5:53 pm
Forum: Military Aviation & Space Flight
Topic: German Heavy Lift Helicopter Replacement Program News and Discussion Thread
Replies: 263
Views: 81418

Re: German Heavy Lift Helicopter Replacement Program News and Discussion Thread

Sure a new helicopter can be developed. The two main helicopter manufacturers are based in Europe. The main problem is the CH53 are running out of time and the Chinooks offered have some new technology, but also some technology that was already 40 years old 20 years ago, for the next 40 years... I g...

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by keesje
Thu Oct 01, 2020 10:29 am
Forum: Military Aviation & Space Flight
Topic: German Heavy Lift Helicopter Replacement Program News and Discussion Thread
Replies: 263
Views: 81418

Re: German Heavy Lift Helicopter Replacement Program News and Discussion Thread

Ozair wrote:
keesje wrote:
I think a Chinook fits in a A400M (you got to seperate the tail) a CH53 not. Advantageous for the Chinook I think.

Way to make up a requirement...
.


Don't change the message. No requirement, I said advantegeous.

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by keesje
Thu Oct 01, 2020 8:00 am
Forum: Military Aviation & Space Flight
Topic: German Heavy Lift Helicopter Replacement Program News and Discussion Thread
Replies: 263
Views: 81418

Re: German Heavy Lift Helicopter Replacement Program News and Discussion Thread

I think a Chinook fits in a A400M (you got to seperate the tail) a CH53 not. Advantageous for the Chinook I think.

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by keesje
Wed Sep 30, 2020 11:40 pm
Forum: Military Aviation & Space Flight
Topic: Best CAS in 1970
Replies: 20
Views: 2213

Re: Best CAS in 1970

Better? In what? Max speed? Airfield performance? Bombload? Most sold? I have no idea..

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by keesje
Wed Sep 30, 2020 4:00 pm
Forum: Military Aviation & Space Flight
Topic: German Heavy Lift Helicopter Replacement Program News and Discussion Thread
Replies: 263
Views: 81418

Re: German Heavy Lift Helicopter Replacement Program News and Discussion Thread

I think that opens opportunity for the re-engined Chinooks when the german program is restarted. Let's see, cancel a program because it's too expensive, then restart when even more expensive engines are available? Maybe there will be a revival of a European heavy helicopter (Europe First), a beefed...

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by keesje
Wed Sep 30, 2020 11:44 am
Forum: Military Aviation & Space Flight
Topic: German Heavy Lift Helicopter Replacement Program News and Discussion Thread
Replies: 263
Views: 81418

Re: German Heavy Lift Helicopter Replacement Program News and Discussion Thread

“We hereby inform you that the award procedure in the ‘Heavy Transport Helicopter (STH)’ project has been cancelled,” the BMVg said. “As part of the ongoing award process, it was recognised that the project would be unlikely to be realised within the allocated budget while meeting all requirements....

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by keesje
Wed Sep 30, 2020 11:18 am
Forum: Military Aviation & Space Flight
Topic: Best CAS in 1970
Replies: 20
Views: 2213

Re: Best CAS in 1970

https://youtu.be/GhF8yG3GtNk?t=169

I know operators were very happy with the A4 Skyhawk, lots of punch for such a small, affordable frame.
-->

I think the Su17 Fitter-B belongs in the list. Entered service 1969, produced until 1990.

Image
https://youtu.be/GhF8yG3GtNk?t=169

I know operators were very happy with the A4 Skyhawk, lots of punch for such a small, affordable frame.

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by keesje
Tue Sep 29, 2020 3:45 pm
Forum: Military Aviation & Space Flight
Topic: European Multirole MPA Replacement, C-500 Beagle Concept >2030
Replies: 156
Views: 17499

Re: European Multirole MPA Replacement, C-500 Beagle Concept >2030

If one takes a look on a map of Europe it becomes clear that there is a large littoral area to be coveres (North Sea, Baltic Sea, Irish Sea, Med, Norwegian Coast, Biskay) and large streches of open water (GUIK gap etc). One size fits it all may be tempting, but in reality the area is large enough t...

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by keesje
Tue Sep 29, 2020 1:31 pm
Forum: Military Aviation & Space Flight
Topic: Switzerland Restarting Fighter Competition
Replies: 124
Views: 24079

Re: Switzerland Restarting Fighter Competition

The Swiss would simply sell their AMRAAM's and AIM-9's to other approved operators. The price would depend on age, quantities, mod status, condition etc.

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by keesje
Tue Sep 29, 2020 7:44 am
Forum: Military Aviation & Space Flight
Topic: European Multirole MPA Replacement, C-500 Beagle Concept >2030
Replies: 156
Views: 17499

Re: European Multirole MPA Replacement, C-500 Beagle Concept >2030

The ATR-72 fuselage would be tempting, but it would need a new wing to do this job. That would mean higher weights, so new landing gear, and some fuselage mods, slightly bigger engines, and so on. But since every option besides P-1 and P-8 requires R&D money, it could be a contender. Airbus cou...

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by keesje
Mon Sep 28, 2020 8:10 pm
Forum: Military Aviation & Space Flight
Topic: European Multirole MPA Replacement, C-500 Beagle Concept >2030
Replies: 156
Views: 17499

Re: European Multirole MPA Replacement, C-500 Beagle Concept >2030

The ATR-72 fuselage would be tempting, but it would need a new wing to do this job. That would mean higher weights, so new landing gear, and some fuselage mods, slightly bigger engines, and so on. But since every option besides P-1 and P-8 requires R&D money, it could be a contender. Airbus cou...

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by keesje
Mon Sep 28, 2020 11:30 am
Forum: Military Aviation & Space Flight
Topic: European Multirole MPA Replacement, C-500 Beagle Concept >2030
Replies: 156
Views: 17499

Re: European Multirole MPA Replacement, C-500 Beagle Concept >2030

Rheinland Air Service is pushing with it's own ATR-72 variant as interim solution. No doubt ATR supports this, no doubt it doesn't meet French Specs & Airbus likes the CN295 MPA better., https://specialmission.ras.de/wp-content/uploads/RAS72-Flugzeug-Standalone.png https://specialmission.ras.de/...

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by keesje
Mon Sep 28, 2020 9:56 am
Forum: Military Aviation & Space Flight
Topic: Switzerland Restarting Fighter Competition
Replies: 124
Views: 24079

Re: Switzerland Restarting Fighter Competition

Is there a preference for a dual engined fighter replacing the F5 and F18?

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by keesje
Sun Sep 27, 2020 11:14 pm
Forum: Site Related
Topic: No free speech allowed?
Replies: 19
Views: 3880

Re: No free speech allowed?

This was your post in that thread, ATCundevil. I did more than the links. I qouted two statements out of the article. Afraid someone would find a reason to delete it. I failed. I'm not here to critize the great work of our moderators. Deleting a perfectly valid post because of at least contradictin...

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by keesje
Thu Sep 24, 2020 7:32 pm
Forum: Military Aviation & Space Flight
Topic: Best dogfighter in 1970
Replies: 40
Views: 2872

Re: Best dogfighter in 1970

I doubt visibility on the F4 and Lightning were good, or that they were better dog fighters than the light, fast and agile early Mig21s.

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by keesje
Thu Sep 24, 2020 3:01 pm
Forum: Civil Aviation
Topic: Heart Unveils Electric Propulsion System for ES-19 Airliner
Replies: 63
Views: 6182

Re: Heart Unveils Electric Propulsion System for ES-19 Airliner

Battery energy density keeps getting better, a little every year. But not like processor speed or your smart phone. A little, despite billions being pumped in it.

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by keesje
Thu Sep 24, 2020 7:38 am
Forum: Civil Aviation
Topic: Heart Unveils Electric Propulsion System for ES-19 Airliner
Replies: 63
Views: 6182

Re: Heart Unveils Electric Propulsion System for ES-19 Airliner

I think there is a persistant physics problem. https://4.bp.blogspot.com/-Xp4eE25PIW0/VxpkxXONpFI/AAAAAAABIaw/orfNx-za9cMrAGxQsS574IgUsgh0rVMVACLcB/s1600/fuelcompared.png Battery energy density didn't really boom over the last 40 years, despite billions being invested by innovative companies all ove...

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by keesje
Wed Sep 23, 2020 9:49 pm
Forum: Military Aviation & Space Flight
Topic: Best dogfighter in 1970
Replies: 40
Views: 2872

Re: Best dogfighter in 1970

An Indian MIG-21 pilot comparing his aircraft to other fighters he practised with. I think F16, F18 developments, Top Gun and other initiatives had to do with the MIG21 being small, having low visual and radar signature, being agile, having excellent acceleration, and good thrust-to-weight ratio. On...

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by keesje
Wed Sep 23, 2020 8:43 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Updated: Airbus unveils three hydrogen concepts

Actually - Hydrogen could be the one thing that saves at least the A380 cross section - Put tanks up top (solving COG problems) and passengers on the main deck. Of course appropriately sized new carbon wing and gear. I think volume is only part of the challenge, pressure & temperatures are extr...

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by keesje
Wed Sep 23, 2020 6:29 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020
Replies: 716
Views: 117069

Re: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020

You should rely on pilots if that provides the safest solution to deal with challenges. Not to escape the cost & leadtime of the best solution. That would be indicative for a weak safety culture. Boeing and FAA need to fight back to regain global credibility in certifying aircraft. The flexibili...

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by keesje
Wed Sep 23, 2020 5:37 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020
Replies: 716
Views: 117069

Re: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020

On the crew alert system, it was involved in confused crews / crashes on the NG (e.g. TK 1953, https://www.nytimes.com/2020/01/20/business/boeing-737-accidents.html ). Boeing managed to convince FAA it were mostly crew failures & did minor improvements. When the MAX came up, it argued all those...

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by keesje
Wed Sep 23, 2020 3:30 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020
Replies: 716
Views: 117069

Re: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020

On the crew alert system, it was involved in confused crews / crashes on the NG (e.g. TK 1953, https://www.nytimes.com/2020/01/20/business/boeing-737-accidents.html ). Boeing managed to convince FAA it were mostly crew failures & did minor improvements. When the MAX came up, it argued all those ...

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by keesje
Wed Sep 23, 2020 2:08 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020
Replies: 716
Views: 117069

Re: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020

Two Senate members try to force Boeing and FAA to play open book this time. “Robust transparency is needed to ensure that independent experts and the public can review whether this aircraft is truly safe before it takes to the skies again,” the senators wrote. Boeing declined to comment. The FAA sai...

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by keesje
Wed Sep 23, 2020 1:51 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding News and Reference Thread [Ungrounded by FAA 18NOV2020]
Replies: 373
Views: 523947

Re: Boeing 737MAX Grounding News and Reference Thread 2020

UK pilots are resisting that for manually trimming the horizontal stabiliser, a “two-pilot effort” may be used. And they prefer 3 sensor logic for aoa determination. https://www.flightglobal.com/safety/uk-pilots-seek-assurance-on-sensor-and-trim-aspects-of-737-max-redesign/140287.article Seems to go...

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by keesje
Wed Sep 23, 2020 12:56 pm
Forum: Civil Aviation
Topic: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020
Replies: 716
Views: 117069

Re: Boeing 737MAX Grounding, General Discussion Thread, Q3 2020

I'm surprised this hasn't been brought up so far: (Seattle Times) FAA engineers demand more changes to the flight crew alerting system and want regulatory waivers to be rescinded. I'm curious if FAA management manages to ignore them yet again. They probably will. Especially if it's just not the FAA...

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by keesje
Wed Sep 23, 2020 9:28 am
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Updated: Airbus unveils three hydrogen concepts

Out of curiosity, what do you propose we do? Define "painful compromises". - accept nuclear plants & waste - keep gas plants as long as we have coal plants - limit the masses exploring great places globally - limit car power to e.g 120 shp/ a exhaust maximum - serious car exhaust filt...

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by keesje
Tue Sep 22, 2020 10:22 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Updated: Airbus unveils three hydrogen concepts

Nay sayers never will be convinced. Their Bayesian starting point is green bad/hydrocarbon good. Any subsequent evidence is accepted or not accepted in so far as it confirms their starting facts. What an utter non-sense. Who likes pollution? But that doesn't automatically make solar / wind power fe...

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by keesje
Tue Sep 22, 2020 9:29 pm
Forum: Military Aviation & Space Flight
Topic: Best dogfighter in 1970
Replies: 40
Views: 2872

Re: Best dogfighter in 1970

A Mirage 3 pilot told me flying the aircraft required a lot of attention that you would better focus on the mission. Moving to the 2000 was a huge improvement he said, flew it self. If look at performance, the Mig21 was very strong in 1970, triggered the F16/18.

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by keesje
Tue Sep 22, 2020 8:28 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Updated: Airbus unveils three hydrogen concepts

Nay sayers never will be convinced. Their Bayesian starting point is green bad/hydrocarbon good. Any subsequent evidence is accepted or not accepted in so far as it confirms their starting facts. What an utter non-sense. Who likes pollution? But that doesn't automatically make solar / wind power fe...

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by keesje
Tue Sep 22, 2020 4:57 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

Damm, your Source is a 7 year old article :banghead: . The prices of windmills have been going down rapidly, same with solar. And the trend is Probably to continue which will cause wind and solar to be the cheapest Source of electricity. I you think so, check your sources, are they really independe...

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by keesje
Tue Sep 22, 2020 12:46 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

The peak was just over 84% in 1980, it's been going backwards ever since, it's mostly due to environmental resistance to any new dams. Although this would change if the Lake Onslow pumped hydo storage scheme is approved, the capacity will be approx 5000 GW. https://www.researchgate.net/publication/...

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by keesje
Tue Sep 22, 2020 10:55 am
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Updated: Airbus unveils three hydrogen concepts

I am interested to see what changes this will make to wing structures when they are not being used to store the fuel? Now you will effectively be hauling around a lot of dead space. It will be interesting to see how this pans out. 15 years seems like a long time but in aerospace it is not. A curren...

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by keesje
Tue Sep 22, 2020 7:54 am
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

I don't understand what you mean. Can you expand? Your graph suggests that nuclear has no future. But it's true that we are only at the beginning of the energy transition. That's not surprising. Crucial technologies like H2 or High Voltage Direct Current are still in development. If you build / int...

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by keesje
Tue Sep 22, 2020 1:29 am
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

Keesje, judging from your posts in this thread it seems you prefer full on lies, cherry-picked figures and extremely damaging and dangerous solutions that are in no way sustainable. Being conservative and feeling comfortable with old tech is OK. But you need to understand that it is simply not an o...

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by keesje
Mon Sep 21, 2020 5:54 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

Those planes look just like an ATR and an A321. I know these are just concepts, but I wonder if they'd actually pursue similar designs if these ever become a reality. Ooops don't forget the 787-mixed-with-350 cockpit and the lengthen A330neo's winglet :duck: Those dont look like any Airbus winglet....

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by keesje
Mon Sep 21, 2020 4:16 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

Maybe hydrogen is a solution to store energy for aircraft, but only if we are able to create hydrogen with clean energy. For electric aircraft battery energy intensity would have to grow maybe 60 folt to be useful. At that point they would have energy density like ..dynamite? Which leads experts to ...

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by keesje
Mon Sep 21, 2020 2:01 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

To build a windmill, put it in a sea, connect it & make sure we have power when there is no wind, remove it after 20-25 years, clean up, costs about the same amount of energy it takes to create / operate. I don't understand what you mean. Can you expand? Your graph suggests that nuclear has no ...

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by keesje
Mon Sep 21, 2020 1:12 pm
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

In cars and trains, service life, recharging, weight & reliability are less of an issue, they don't move at 10 km, 900km /hr over an Ocean. That's a difference, also in energy terms. 15 Years out, anything is possible & everyone forgot what was communicated in 2020, marketing loves it anyway...

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by keesje
Mon Sep 21, 2020 11:30 am
Forum: Civil Aviation
Topic: Updated: Airbus unveils three hydrogen concepts
Replies: 142
Views: 12923

Re: Airbus unveiling three hydrogen concept plane today at 2pm CET

Where will all this hydrogen needed come from? From "clean" nuclear energy? Yes. All options taking into account, I see little alternatives. Sun & wind are just the window dressing we love to believe in We ignore the massive energy requirements / current generation because we love to ...

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