Live data from Hacker News

Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

airandspaceforces.com

91–100 of 114 posts

Re: Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

#91

Earlier quoted context omitted.

> fuel doesn't care about the bobbing up and down Maybe the fuel doesn't care, but the flight crew certainly will care about a large oscillating mass constantly changing the aircraft's center of mass.

Is it drastically different from conventional aircraft though? The KC-135 houses a great deal of it's own fuel in the wings as well. So does most commercial air liners AFAIK.

30% more efficient according to the article.

Re: Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

#92

Personally, I think it looks beautiful. I hope it works. Generation 3 of the flying wing. A worthy tradition and a genuine problem to solve. Also, for the record, I think military operations get a different category on emissions. Yes they pollute but just hope they aren’t dropping ordinance. That stuff really pollutes. I live by a major cargo hub airport with occasional military traffic. The occasional C-5 Galaxy doi…

> Yes they pollute but just hope they aren’t dropping ordinance. That stuff really pollutes.

How so? Usually it’s just nitrate fertilizer. You can actually measure the greening effect that certain large 20th century ears (WW2, Korea, Vietnam) have had on global bio mass.

Re: Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

#93

A tanker is a good fit for a blended wing body. Fuel efficiency is important for that mission, fuel tanks can be easily adapted to the odd shape (compared to cargo), and fuel doesn't care about the bobbing up and down in turns that comes from the wide hull shape (compared to passengers who don't like about that). Reconnaissance would work too.

> fuel doesn't care about the bobbing up and down Maybe the fuel doesn't care, but the flight crew certainly will care about a large oscillating mass constantly changing the aircraft's center of mass.

> the flight crew certainly will care

How long will tankers be crewed?

Re: Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

#94

The KC-46 program has not gone swimmingly. I'm curious how they think they're going to get a demonstrator flying in 5 years when they can't get a tanker that's based on an existing production airframe flying on schedule. https://en.m.wikipedia.org/wiki/Boeing_KC-46_Pegasus

Maybe working off an existing design is harder than greenfield?

> Maybe working off an existing design is harder than greenfield?

Except that Boeing has already one it:

* https://en.wikipedia.org/wiki/Boeing_KC-767

And Airbus (who originally won) didn't seem to have a problem:

* https://en.wikipedia.org/wiki/Airbus_A330_MRTT

Re: Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

#95
post #19

Earlier quoted context omitted.

P8 went pretty well. Blended wing isn’t sci-fi, B2 and plenty of ucav are full flying wing. https://en.wikipedia.org/wiki/Boeing_P-8_Poseidon

Boeing was a very very different company then. I’m bullish on blended wing body, but I would have much more confidence if it were Lockheed or someone emulating the SpaceX, rapid development cycles working on this.

I am up the road from Lockheed and know quite a few employees there and I'm pleased to hear a better reputation - I've heard the issues with Boeing leadership for years now as well. There's nothing like watching their airstrip for some really cool machines coming and going.

Re: Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

#96

Personally, I think it looks beautiful. I hope it works. Generation 3 of the flying wing. A worthy tradition and a genuine problem to solve. Also, for the record, I think military operations get a different category on emissions. Yes they pollute but just hope they aren’t dropping ordinance. That stuff really pollutes. I live by a major cargo hub airport with occasional military traffic. The occasional C-5 Galaxy doi…

> Yes they pollute but just hope they aren’t dropping ordinance. That stuff really pollutes. How so? Usually it’s just nitrate fertilizer. You can actually measure the greening effect that certain large 20th century ears (WW2, Korea, Vietnam) have had on global bio mass.

I tend to think about the unexploded stuff as having a long-term negative pollution effect - agreed that the chemicals themselves aren't really a culprit. In my view though, after watching tons of combat videos especially during WWII (and even with Syria and Ukraine examples) it's not the ordinance it's what they hit with it. Damaging infrastructure and chemicals and whatnot can have lasting effects by way of the ordinance dropping. Otherwise planes flying over taking recon photos are a different story.

Also I was just considering scale of military flights versus civilian. Yes they burn a lot of gas and haul ass, but there are way many more passenger and cargo flights day in and day out. I do love the idea of improving cargo shipping by sky in my lifetime. As my Uncle pointed out once, having dealt with Passengers and Cargo, "Cargo doesn't complain."

Re: Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

#98
post #97

The Air Force should have forced some kind of transatlantic agreement, and make the A380 the new tanker, instead of letting the airplane go out of production.

I totally agree but who will force them? I thought the US Senators (and politicians in general) are just as keen to keep "jobs" going to American companies?

Now, if Airbus just gives away everything we need to manufacture and support the A380 free of cost so Boeing / Lockheed / whoever can manufacture them in the US and keep all the monies, I am sure the pencil pushers and penny pinchers at these companies would jump at the opportunity but I suspect that would also run into problems in Europe...

Re: Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

#99
post #98
post #97

The Air Force should have forced some kind of transatlantic agreement, and make the A380 the new tanker, instead of letting the airplane go out of production.

I totally agree but who will force them? I thought the US Senators (and politicians in general) are just as keen to keep "jobs" going to American companies? Now, if Airbus just gives away everything we need to manufacture and support the A380 free of cost so Boeing / Lockheed / whoever can manufacture them in the US and keep all the monies, I am sure the pencil pushers and penny pinchers at these companies would jump…

Make it in the USA, get a profit percentage to Airbus, opening for them a market they could never win. Both would profit.

Re: Air Force Plans New Blended Wing Body Cargo/Tanker Aircraft by 2027

#100

A tanker is a good fit for a blended wing body. Fuel efficiency is important for that mission, fuel tanks can be easily adapted to the odd shape (compared to cargo), and fuel doesn't care about the bobbing up and down in turns that comes from the wide hull shape (compared to passengers who don't like about that). Reconnaissance would work too.

> fuel doesn't care about the bobbing up and down Maybe the fuel doesn't care, but the flight crew certainly will care about a large oscillating mass constantly changing the aircraft's center of mass.

Surely the fuel will be separated in to multiple tanks with pumps between them, similar to conventional aircraft.
Post reply on HN