<story><title>United Airlines will buy 15 planes from Boom Supersonic</title><url>https://www.cnbc.com/2021/06/03/united-will-buy-15-ultrafast-airplanes-from-start-up-boom-supersonic.html</url></story><parent_chain><item><author>qayxc</author><text>&amp;gt; No, this isn’t normal at all.&lt;p&gt;Hm. Significant delays and missed timelines aren&amp;#x27;t normal you say? Let&amp;#x27;s see (aerospace only):&lt;p&gt;• all SpaceX projects so far (USA)&lt;p&gt;• Virgin Galactic&amp;#x27;s space tourism plans (USA)&lt;p&gt;• Boeing&amp;#x27;s 787 and 777X (USA)&lt;p&gt;• HAL&amp;#x27;s Sukhoi-30-, Jaguar Darin III-, and Tejas LCA projects and production (India)&lt;p&gt;• BAE Systems Plc&amp;#x2F;TAI TF-X project (UK&amp;#x2F;Turkey)&lt;p&gt;• EADS&amp;#x27;s MRH-90, Tiger, and A400M (EU)&lt;p&gt;• Airbus A380 (EU)&lt;p&gt;• Comac’s C919 project (China)&lt;p&gt;• ...&lt;p&gt;TBH, it&amp;#x27;d be easier to list projects that actually finished on schedule and didn&amp;#x27;t face significant delays, such as the Airbus A350XWB.&lt;p&gt;And most of the companies listed aren&amp;#x27;t even money-starved start-ups that required investor attention and media hype. It&amp;#x27;s almost as if developing, testing, and certifying cutting edge aerospace projects is kind of hard and just as easy to predict and schedule as large software projects...</text></item><item><author>PragmaticPulp</author><text>&amp;gt; That&amp;#x27;s to be expected - press releases focus on super-optimistic specs and timelines.&lt;p&gt;No, this isn’t normal at all. Some optimism is expected but promising commercial operation a couple years out when they weren’t even close to anything like it is simply lying.&lt;p&gt;We shouldn’t be giving companies a pass for this stuff</text></item><item><author>qayxc</author><text>That&amp;#x27;s to be expected - press releases focus on super-optimistic specs and timelines.&lt;p&gt;After reality kicks in and unforeseen issues arise (remember 2020? me neither), plans need to be adjusted.&lt;p&gt;The scale model was initially expected to fly in 2018 even [1].&lt;p&gt;I expect further delays to be realistic as well. They either going to deliver sometime in the next decade or go bankrupt&amp;#x2F;sold out within the next couple of years.&lt;p&gt;[1] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;blog.wandr.me&amp;#x2F;2017&amp;#x2F;11&amp;#x2F;false-hope-boom-supersonic-travel-2018&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;blog.wandr.me&amp;#x2F;2017&amp;#x2F;11&amp;#x2F;false-hope-boom-supersonic-tra...&lt;/a&gt;</text></item><item><author>aetherson</author><text>So I was interested in how well Boom was doing in keeping to its timeline, and found an article from two years ago:&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;arstechnica.com&amp;#x2F;science&amp;#x2F;2019&amp;#x2F;01&amp;#x2F;supersonic-passenger-jet-firm-raises-100-million-aims-for-2019-test-flights&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;arstechnica.com&amp;#x2F;science&amp;#x2F;2019&amp;#x2F;01&amp;#x2F;supersonic-passenger...&lt;/a&gt;&lt;p&gt;Some side-by-side comparisons:&lt;p&gt;2019 article:  &amp;quot;Boom envisions its Overture airliner traveling at Mach 2.2.&amp;quot;  2021 article:  &amp;quot;a plane that could fly at Mach 1.7&amp;quot;&lt;p&gt;2019 article:  &amp;quot;Its planes could be ready for commercial service in the mid-2020s&amp;quot;.  2021 article:  &amp;quot;It is targeting the start of passenger service in 2029.&amp;quot;&lt;p&gt;The 2019 article also says that Boom is constructing a 1&amp;#x2F;3rd scale version of Overture that could be making test flights later in 2019.  This article from October 2020 says that the 1&amp;#x2F;3rd scale vehicle was &amp;quot;rolled out&amp;quot; in 2020 and could be ready for test flights in Q3 2021. &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.forbes.com&amp;#x2F;sites&amp;#x2F;erictegler&amp;#x2F;2020&amp;#x2F;10&amp;#x2F;26&amp;#x2F;boom-supersonics-one-third-scale-prototype-is-as-much-investment-vehicle-as-test-vehicle&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.forbes.com&amp;#x2F;sites&amp;#x2F;erictegler&amp;#x2F;2020&amp;#x2F;10&amp;#x2F;26&amp;#x2F;boom-supe...&lt;/a&gt;</text></item></parent_chain><comment><author>iab</author><text>Interesting comment about the XWB. The hype-driving is obviously necessary - nothing is ever more than ~5 years away, because that is the limit of VC&amp;#x2F;consumer patience.</text></comment>
<story><title>United Airlines will buy 15 planes from Boom Supersonic</title><url>https://www.cnbc.com/2021/06/03/united-will-buy-15-ultrafast-airplanes-from-start-up-boom-supersonic.html</url></story><parent_chain><item><author>qayxc</author><text>&amp;gt; No, this isn’t normal at all.&lt;p&gt;Hm. Significant delays and missed timelines aren&amp;#x27;t normal you say? Let&amp;#x27;s see (aerospace only):&lt;p&gt;• all SpaceX projects so far (USA)&lt;p&gt;• Virgin Galactic&amp;#x27;s space tourism plans (USA)&lt;p&gt;• Boeing&amp;#x27;s 787 and 777X (USA)&lt;p&gt;• HAL&amp;#x27;s Sukhoi-30-, Jaguar Darin III-, and Tejas LCA projects and production (India)&lt;p&gt;• BAE Systems Plc&amp;#x2F;TAI TF-X project (UK&amp;#x2F;Turkey)&lt;p&gt;• EADS&amp;#x27;s MRH-90, Tiger, and A400M (EU)&lt;p&gt;• Airbus A380 (EU)&lt;p&gt;• Comac’s C919 project (China)&lt;p&gt;• ...&lt;p&gt;TBH, it&amp;#x27;d be easier to list projects that actually finished on schedule and didn&amp;#x27;t face significant delays, such as the Airbus A350XWB.&lt;p&gt;And most of the companies listed aren&amp;#x27;t even money-starved start-ups that required investor attention and media hype. It&amp;#x27;s almost as if developing, testing, and certifying cutting edge aerospace projects is kind of hard and just as easy to predict and schedule as large software projects...</text></item><item><author>PragmaticPulp</author><text>&amp;gt; That&amp;#x27;s to be expected - press releases focus on super-optimistic specs and timelines.&lt;p&gt;No, this isn’t normal at all. Some optimism is expected but promising commercial operation a couple years out when they weren’t even close to anything like it is simply lying.&lt;p&gt;We shouldn’t be giving companies a pass for this stuff</text></item><item><author>qayxc</author><text>That&amp;#x27;s to be expected - press releases focus on super-optimistic specs and timelines.&lt;p&gt;After reality kicks in and unforeseen issues arise (remember 2020? me neither), plans need to be adjusted.&lt;p&gt;The scale model was initially expected to fly in 2018 even [1].&lt;p&gt;I expect further delays to be realistic as well. They either going to deliver sometime in the next decade or go bankrupt&amp;#x2F;sold out within the next couple of years.&lt;p&gt;[1] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;blog.wandr.me&amp;#x2F;2017&amp;#x2F;11&amp;#x2F;false-hope-boom-supersonic-travel-2018&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;blog.wandr.me&amp;#x2F;2017&amp;#x2F;11&amp;#x2F;false-hope-boom-supersonic-tra...&lt;/a&gt;</text></item><item><author>aetherson</author><text>So I was interested in how well Boom was doing in keeping to its timeline, and found an article from two years ago:&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;arstechnica.com&amp;#x2F;science&amp;#x2F;2019&amp;#x2F;01&amp;#x2F;supersonic-passenger-jet-firm-raises-100-million-aims-for-2019-test-flights&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;arstechnica.com&amp;#x2F;science&amp;#x2F;2019&amp;#x2F;01&amp;#x2F;supersonic-passenger...&lt;/a&gt;&lt;p&gt;Some side-by-side comparisons:&lt;p&gt;2019 article:  &amp;quot;Boom envisions its Overture airliner traveling at Mach 2.2.&amp;quot;  2021 article:  &amp;quot;a plane that could fly at Mach 1.7&amp;quot;&lt;p&gt;2019 article:  &amp;quot;Its planes could be ready for commercial service in the mid-2020s&amp;quot;.  2021 article:  &amp;quot;It is targeting the start of passenger service in 2029.&amp;quot;&lt;p&gt;The 2019 article also says that Boom is constructing a 1&amp;#x2F;3rd scale version of Overture that could be making test flights later in 2019.  This article from October 2020 says that the 1&amp;#x2F;3rd scale vehicle was &amp;quot;rolled out&amp;quot; in 2020 and could be ready for test flights in Q3 2021. &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.forbes.com&amp;#x2F;sites&amp;#x2F;erictegler&amp;#x2F;2020&amp;#x2F;10&amp;#x2F;26&amp;#x2F;boom-supersonics-one-third-scale-prototype-is-as-much-investment-vehicle-as-test-vehicle&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.forbes.com&amp;#x2F;sites&amp;#x2F;erictegler&amp;#x2F;2020&amp;#x2F;10&amp;#x2F;26&amp;#x2F;boom-supe...&lt;/a&gt;</text></item></parent_chain><comment><author>aaronblohowiak</author><text>Also the SLS and the JSF...</text></comment>