XWB
in service - 11 years
Posts: 16,115
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Post by XWB on Nov 24, 2015 16:06:06 GMT 1
No ETOPS approval it seems. |
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XWB
in service - 11 years
Posts: 16,115
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Post by XWB on Nov 24, 2015 16:11:05 GMT 1
From the summary picture, cold weather testing seems to be missing. Does that mean it will be done later? I expect Airbus to continue testing. From the A350 test campaign we learned that extreme weather tests are not required for certification. They are done to increase reliability. It's nice if you can complete these additional tests within the certification time frame. Doing these tests after certification means more time, i.e. spending more money on the program. |
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XWB
in service - 11 years
Posts: 16,115
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Post by XWB on Nov 24, 2015 16:48:54 GMT 1
Just to clarify, the Leap engine being certified doesn't mean any frame (A319neo-A320neo-A321neo) is, or it does?... Nope, it's just the engine. They still need to certify the airframe/engine combination. For reference purpose, the PW1100G engine was certified in December 2014. www.pw.utc.com/Press/Story/20141219-1545/2014/All%20Categories |
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XWB
in service - 11 years
Posts: 16,115
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Post by XWB on Nov 24, 2015 17:01:14 GMT 1
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Baroque
in service - 2 years
Posts: 3,991
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Post by Baroque on Nov 24, 2015 17:27:36 GMT 1
It's nice if you can complete these additional tests within the certification time frame. Doing these tests after certification means more time, i.e. spending more money on the program. I suppose those tests not performed yet are not required by the customers of the early deliveries at this time. But I've been thinking if cold weather tests are really needed at all for the A320neo. Apart from the engines, much of the neo's systems are already well proven on the ceo, unlike in the case of all new aircraft like the A350. Cold weather engine performance parameters should have been tested on the testbeds. That should suffice, no? |
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XWB
in service - 11 years
Posts: 16,115
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Post by XWB on Nov 24, 2015 17:32:20 GMT 1
You can't make assumptions in aviation. I'm confident they will also test the airframe/engine combination as can be seen on the slides on the previous page.
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spotterxfw
in service - 2 years
Hometown XFW
Posts: 3,902
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Post by spotterxfw on Nov 24, 2015 17:41:23 GMT 1
A320neo with Pratt & Whitney engines is certified
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Post by Jkkw on Nov 26, 2015 14:40:06 GMT 1
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Post by bmw801 on Nov 28, 2015 1:12:21 GMT 1
In the above Airbus tweet from 24.11.2015 they say that fuel burn for the A320neo is 20% better than for A320ceo. As far as i remember that was the target for 2020. Is this (for now) just a nice marketing number or do we see here an indication that fuel burn for the neo is considerable better than expected  ? |
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Post by fanairbus on Nov 28, 2015 9:15:15 GMT 1
On the excellent A320neo Flight Test Logbook site (https://docs.google.com/spreadsheets/d/1d0_SiRc0ejKcOeWz3jTWfSQAyb3_YrFatp1bz9xmRB8/pubhtml)the total 'planned' hours for the A320neo model's testing is 1600 h but only about 420 h of this has been testing the CFM engines to date. If this engine version also needs roughly the same number of hours fro certification (why wouldn't it) then the total for the A320neo development will be a minimum of another 600 h.
With the P&W A320 test flights continuing, are there any informed members who might be able to fill in the final target hours for the A320neo development (or gambling members tempted momentarily away from the A380 convoy guessing game)?
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