{"id":27435,"date":"2016-07-01T06:00:35","date_gmt":"2016-06-30T20:00:35","guid":{"rendered":"http:\/\/www.aspistrategist.ru\/?p=27435"},"modified":"2016-07-01T10:20:34","modified_gmt":"2016-07-01T00:20:34","slug":"usafs-new-bomber-mini-b-2","status":"publish","type":"post","link":"https:\/\/www.aspistrategist.ru\/usafs-new-bomber-mini-b-2\/","title":{"rendered":"The USAF’s new bomber: the mini-me B-2?"},"content":{"rendered":"

Last year I wrote a series for <\/span>The Strategist<\/span><\/i> on the USAF\u2019s new bomber program. (Parts<\/span> one<\/span><\/a>,<\/span> two<\/span><\/a> and<\/span> three<\/span><\/a>.) I was sceptical of the possibility of producing a state-of-the-art long range bomber for anything like the proposed unit cost of US$550 million (2010 dollars). The historical trend (see part 2) suggested a significantly higher price. But I also observed that bomber costs \u2018hit the wall\u2019 with the B-2 and that new approaches are needed.<\/span><\/p>\n

We haven\u2019t learned much about the new bomber in the intervening 15 months. We know it will be the B-21 (\u201821\u2019<\/span> signifying the century<\/span><\/a> rather than a sequential bomber designation). We<\/span> don\u2019t know much more about costs<\/span><\/a>. But we got to see what it (allegedly) looks like:<\/span><\/p>\n

\"Davies3\"<\/p>\n

USAF graphic<\/span><\/a><\/p>\n

It looks quite a bit like its billion dollar predecessor from Northrop Grumman, the B-2. That got me thinking whether the new bomber might be simply a smaller and more affordable B-2. For reasons explained below, that might be about right.<\/span><\/p>\n

\"davies4\"<\/p>\n

B-2 Spirit (<\/span>USAF<\/span><\/a>)<\/span><\/p>\n

A strong driver of real cost growth in military systems is the sophistication of cutting edge systems needed to meet military requirements. We can be reasonably sure of that for two reasons. First, other machines like home computers, smart phones and automobiles have come down in real terms due to productivity improvements in manufacturing and economies of scale, despite substantial increases in performance. You can still pay a lot for a few extra percent of performance (Formula 1 cars had similar cost curves to military systems until they were<\/span> specification capped<\/span><\/a>), but most consumers settle happily for an 80% solution. Second, the history of American bombers shows us that unit prices fell below trend when numbers took precedence over that last little bit of performance during WW2. But costs rose well above the trend line when Cold War pressures drove very high specification levels. (The worst offender was the B-58 supersonic nuclear bomber\u2014which cost<\/span> three times as<\/span><\/a> much<\/span> as the slower, but larger and longer-ranged B-52.)<\/span><\/p>\n

The chart below shows the cost per kilogram of American bombers since 1925. That\u2019s useful because it\u2019s a reasonable proxy for complexity and manufacturing sophistication. Against this metric, automobiles and phones have both tracked steeply downwards, while bombers have tracked relentlessly upwards. Interestingly, while the B-2 unit flyaway cost<\/span> sat below the historical trend<\/span><\/a>, when we factor in weight, it\u2019s bang on the line.<\/span><\/p>\n

Now look where the projected cost of a B-21 in 2025 sits. There have been reports that it\u2019ll be smaller than the B-2 to save on production cost. I\u2019ve taken a couple of representative empty weights for illustration. The B-2 is 71,700kg empty, so I used B-21 weights of 60,000 and 30,000 kg. More than 60,000 and you won\u2019t save much; any lighter than 30,000 and you won\u2019t get the required range, endurance and payload. So it\u2019s probably somewhere between those bounds.<\/span><\/p>\n

Even so, there\u2019s still a factor of 10 or more between the projected B-21 cost\/kg and the extrapolated historical trend. That means one of two things. Costs could escalate, and repeat the disastrous B-2 program that saw 21 aircraft delivered instead of 132. The USAF can\u2019t afford to have that happen again; the B-52 won\u2019t be around forever (<\/span>despite appearances to the contrary<\/span><\/a>) and the B-52 and the later B-1B aren’t survivable against modern defences.<\/span><\/p>\n

The other possibility is more modest performance. Being smaller than the B-2 won\u2019t itself save enough to make it affordable\u2014to get onto the trend line it\u2019d have to be a totally unrealistic 5,000 kg. But avoiding<\/span> Augustine\u2019s Laws<\/span><\/a> by keeping it (relatively) simple, those last percentage points of desired capability won\u2019t drive a disproportionate cost increase. (See the \u2018sophistication de-escalation\u2019 schematic in the graph.) And there are indications that the approach being taken is technologically conservative. <\/span>Aviation Week<\/span><\/i> last week<\/span> quoted a USAF program executive<\/span><\/a> (paywalled):<\/span><\/p>\n

\u2018[The B-21] leverages three decades of small-scale but persistent bomber work since delivery of the Northrop B-2 Spirit in the 1980s and \u201990s, particularly advances in flying wing designs. The B-21 uses mostly mature, existing technologies\u2026\u2019<\/span><\/p>\n

In short, I think it\u2019s possible that the USAF has reached the point with bombers where it\u2019s being driven to the \u201880% solution\u2019. The B-21 might well be a B-2 \u2018mini-me\u2019. Modern computerised design and production techniques will certainly make production of a B-2-like aircraft less costly than it was 20 years ago. If that\u2019s the case, it\u2019s smart\u2014silver bullets have simply gotten too expensive.<\/span> The USAF might have realised that it has to choose between quantity and \u2018quality\u2019 (aka sophistication)\u2014and has chosen the 80% solution this time. The B-21 might be to the B-2 what the Virginia class submarine is to the exquisite but prohibitively expensive Seawolf class\u2014<\/span>good enough to get the job done and affordable enough to buy<\/span><\/a>.<\/span><\/p>\n

\"davies5\"<\/p>\n

Sources: Augustine’s Laws, Air International<\/span><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Last year I wrote a series for The Strategist on the USAF\u2019s new bomber program. (Parts one, two and three.) I was sceptical of the possibility of producing a state-of-the-art long range bomber for anything …<\/p>\n","protected":false},"author":6,"featured_media":27436,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[1274,1729,208,1367],"class_list":["post-27435","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","tag-b-1-bombers","tag-b-2","tag-graph","tag-us-air-force"],"acf":[],"yoast_head":"\nThe USAF's new bomber: the mini-me B-2? | The Strategist<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.aspistrategist.ru\/usafs-new-bomber-mini-b-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The USAF's new bomber: the mini-me B-2? | The Strategist\" \/>\n<meta property=\"og:description\" content=\"Last year I wrote a series for The Strategist on the USAF\u2019s new bomber program. 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