Search found 6 matches

by VenturiEffect
Mon May 18, 2020 2:17 pm
Forum: Technical/Operations
Topic: Transonic truss the solution for regional aircraft?
Replies: 22
Views: 3421

Re: Transonic truss the solution for regional aircraft?

I came to this forum to learn, but the question of a new RJ design always ends with “it’s too expensive, it will cost XX”. I find that extremely unsatisfactory and nonspecific. The problem is that aircraft development and certification costs are (almost) independent from aircraft size. Simply becau...

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by VenturiEffect
Sun May 17, 2020 2:11 am
Forum: Technical/Operations
Topic: Transonic truss the solution for regional aircraft?
Replies: 22
Views: 3421

Re: Transonic truss the solution for regional aircraft?

Yes, financing will be a huge problem, and the 150-180 seat airplane market should be targeted before the sub-76-seat market. Though it's unlikely, it's not impossible that a developing/developed country starts throwing money into aircraft development. Same thing with billionaires, though currently...

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by VenturiEffect
Sat May 16, 2020 1:36 am
Forum: Technical/Operations
Topic: Transonic truss the solution for regional aircraft?
Replies: 22
Views: 3421

Re: Transonic truss the solution for regional aircraft?

But, development and certification cost can’t be ignored and there’s precious little transferable. The A220 has about $5 billion in non-recurring costs, new design but most of it well proven technology, nothing earth shattering. If you sell a 1000 frames, you have to recover $5 million per delivery...

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by VenturiEffect
Sat May 16, 2020 1:13 am
Forum: Technical/Operations
Topic: Transonic truss the solution for regional aircraft?
Replies: 22
Views: 3421

Re: Transonic truss the solution for regional aircraft?

Way too much money invested in design, bills, test and certification for 76 seat market. You’re talking $6 billion, at least, and there’s no way to amortize the NRC over at most a 1500 plane production and possibly half that, if it weighs more than 86,000#. I came to this forum to learn, but the qu...

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by VenturiEffect
Fri May 15, 2020 11:52 am
Forum: Technical/Operations
Topic: Transonic truss the solution for regional aircraft?
Replies: 22
Views: 3421

Re: Transonic truss the solution for regional aircraft?

Link isn't working for me I have been a reader for several years and haven’t successfully figured out how to post links appropriately. An alternate method would be to visit ntrs.nasa.gov and search “Transonic Truss-Braced Wing”. The linked study is the 8th result, but all of the studies are valuabl...

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by VenturiEffect
Wed May 13, 2020 2:24 pm
Forum: Technical/Operations
Topic: Transonic truss the solution for regional aircraft?
Replies: 22
Views: 3421

Transonic truss the solution for regional aircraft?

A question for the engineers in the forum. Is there anything other than the same engine availability issues preventing the technology being developed for the Boeing SUGAR and NASA TTBW being applied to a sub 76-seat frame? Could this tech bypass the immediate need for a new power plant with positive...

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