Boom Supersonic's XB-1 jet sets new speed record during 7th test flight

[Admin]

Boom Supersonic's XB-1 aircraft set a new speed record during its latest test flight on Nov. 5, marking a major milestone toward flying at supersonic speeds.

Boom Supersonic's XB-1 jet sets new speed record during 7th test flight : Read more

 

[Rhyman]

Boom Supersonic's XB-1 aircraft set a new speed record during its latest test flight on Nov. 5, marking a major milestone toward flying at supersonic speeds.

Boom Supersonic's XB-1 jet sets new speed record during 7th test flight : Read more

The author has made a common mistake in this article by associating Mach 0.82 with 629 mph. This equates to M1 being 676 mph. The speed of sound is 676 mph when the temperature is 20 deg centigrade. At the altitude Boom flew their test, the temperature will be much lower and so will the speed of sound.

In their press release, Boom said their vehicle reached 499 knots, which is a fraction over 574 mph.

 

[KrissBradly]

Why do I feel like I am in the past? This plane is going to be remarkable. But I feel like this has already all been done before. Similar to the moon landings. Time warp brigade?

 

[danR]

The author has made a common mistake in this article by associating Mach 0.82 with 629 mph. This equates to M1 being 676 mph. The speed of sound is 676 mph when the temperature is 20 deg centigrade. At the altitude Boom flew their test, the temperature will be much lower and so will the speed of sound.

In their press release, Boom said their vehicle reached 499 knots, which is a fraction over 574 mph.

Approximately Mach 0.9, at 23,000 feet. I appreciate that you associated the speed of sound with temperature, rather than density: an amazingly common blunder.

 

[Unclear Engineer]

The problem with this article is that it's headline turns out to be totally hype.

The "speed record" is nothing more that the highest speed this individual aircraft has achieved so far in its development program. Other aircraft long ago have set records for much higher speeds, altitudes, etc. And, these speeds and altitudes for this aircraft are still far below what it is designed to do.

So, this headline is analogous to claiming that a tootler "set a record" because he walked 3 ft from mom to dad in the living room last night.

If the editors keep putting headlines like this on stories like this, by the time that the XB-1 actually does something remarkable, most people won't even click on the story because all of the previous stories have had such misleading headlines.

 

[yus.simanjuntak]

What a sad joke. When I was a kid I watched regular moon landings live and we had a supersonic passenger plane called the Concord.
Humanity seems to be devolving with each passing day.

 

[Outback_Joe]

Looks just like the XB70, I saw a test flight when I was a teenager in Palmdale California. We don't need to do this all over do we?