5 ms·

Your comment matches common anecdotes, but I can provide more detail (I study aerodynamics.) The background is: - Britain sent data on the Miles M.52 superson

Your comment matches common anecdotes, but I can provide more detail (I study aerodynamics.) The background is: - Britain sent data on the Miles M.52 supersonic jet to the US, so at least some Americans knew about the flying tail before the X-1 (first supersonic flight in 1948), and the Germans did some work on flying tails https://en.wikipedia.org/wiki/Miles_M.52 https://en.wikipedia.org/wiki/Miles_M.52 - most of the pre X-1 planes that crashed didn't reach Mach 1, but they did lose control. Those are called loss of control due to compressibility, not supersonic flights. - as the article says, the DC-8 flew ok up to Mach 0.97 in previous flights, so they thought things were fine. Note that in every Mach 1.0 flight that I've read about, the airspeed indicator jumps from around Mach 0.96 to 1.0, perhaps meaning the indicator is not accurate around Mach 1.0.

knolan 5y ago
You have to correct for the shockwave that sits in front of the pitot static probe. Otherwise you get crazy results.
Gravityloss 5y ago
It's crazy how advanced some UK technology was back then. Designing afterburners in 1943. And then canceling just before completion of the aircraft. The same happens in many cases. What's a successful breakthrough is usually not only technological. UK was extremely indebted after the second world war, mostly to USA. https://www.exchangerates.org.uk/articles/1325/the-200-year-pound-to-dollar-exchange-rate-history-from-5-in-1800s-to-todays.html https://www.exchangerates.org.uk/articles/1325/the-200-year-... Of course there was the wider sad story of management problems in UK industry and the long decline after the war.
- redis_mlc 5y ago
  I grudgingly give credit to the British for being very clever (magnetron, battle of the beams, etc.) during and after WW2. Having said that, London had food rationing for 9 years after the war, and really didn't have the money or facilities that the Americans had. (A B-29 was used as the mothership for the X-1!) The W article below mentions "After the rocket plane experienced compressibility problems during 1947, it was modified with a variable-incidence tailplane following technology transfer with the United Kingdom." https://en.wikipedia.org/wiki/Bell_X-1 https://en.wikipedia.org/wiki/Bell_X-1 Additionally, around half the X-plane pilots died, so Britain avoided a lot of test pilot fatalities. The US poured unlimited funding and talent into the program, with everybody being stars/aces (Yeager, Hoover, etc.) Both were injured seriously and almost died in various X-plane tests. One X-plane test pilot set a record, then just quit and started a gun range.
- cameronh90 5y ago
  The UK is also the only nation to successfully produce an orbital-class spacecraft then cancel their space program. Our inability to follow through in recent decades can be depressing. Hopefully SABRE/Skylon doesn't turn out to just be vaporware.

knolan 5y ago

You have to correct for the shockwave that sits in front of the pitot static probe. Otherwise you get crazy results.

Gravityloss 5y ago

It's crazy how advanced some UK technology was back then. Designing afterburners in 1943. And then canceling just before completion of the aircraft. The same happens in many cases. What's a successful breakthrough is usually not only technological. UK was extremely indebted after the second world war, mostly to USA. https://www.exchangerates.org.uk/articles/1325/the-200-year-pound-to-dollar-exchange-rate-history-from-5-in-1800s-to-todays.html https://www.exchangerates.org.uk/articles/1325/the-200-year-... Of course there was the wider sad story of management problems in UK industry and the long decline after the war.

redis_mlc 5y ago
I grudgingly give credit to the British for being very clever (magnetron, battle of the beams, etc.) during and after WW2. Having said that, London had food rationing for 9 years after the war, and really didn't have the money or facilities that the Americans had. (A B-29 was used as the mothership for the X-1!) The W article below mentions "After the rocket plane experienced compressibility problems during 1947, it was modified with a variable-incidence tailplane following technology transfer with the United Kingdom." https://en.wikipedia.org/wiki/Bell_X-1 https://en.wikipedia.org/wiki/Bell_X-1 Additionally, around half the X-plane pilots died, so Britain avoided a lot of test pilot fatalities. The US poured unlimited funding and talent into the program, with everybody being stars/aces (Yeager, Hoover, etc.) Both were injured seriously and almost died in various X-plane tests. One X-plane test pilot set a record, then just quit and started a gun range.
cameronh90 5y ago
The UK is also the only nation to successfully produce an orbital-class spacecraft then cancel their space program. Our inability to follow through in recent decades can be depressing. Hopefully SABRE/Skylon doesn't turn out to just be vaporware.