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It was a quick rattling of a few seconds, rather noisy, causing the windows to rattle, doors to shake in their frames, and setting the dogs in the neighborhood off on a barking frenzy.
perhaps with a propulsion system or airframe that minimizes or mitigates the sonic part of the boom and we just felt the airwave disturbance traveling to the ground
Originally posted by Phage
A sonic boom is experienced as one or two very short pulses, much like gunshots in duration. They do not last one second, much less a few.
Just because you go supersonic doesn't mean the boom is going to reach
the ground and be sufficiently loud and recognizable to provide any
sort of warning.
Every now and then we fly the SR-71 over Dryden at Mach 3 and 85,000
feet. I've been in the control room where I could see the ground
track and it's gone right over., but there was either no audible
boom or just a brief rumble. Sensitive pressure sensors have recorded
the rather tatty remnants of the N-wave, but it's not really much of
an event to the ear.
If the N-wave from a big Mach 3 plane dissipates, you can bet that the
boom from a slower smaller plane will do the same.
Mary Shafer NASA Dryden Flight Research Center, Edwards, CA
SR-71 Flying Qualities Lead Engineer Of course I don't speak for NASA
firstname.lastname@example.org DoD #362 KotFR
A fist-sized meteorite plummeted to Earth somewhere in southern Savo. At least three cameras captured the bright streak of the space-rock making its fiery descent over the weekend.
"The meteorite has probably fallen along the border between Kangasniemi and Hankasalmi," says Arto Oksanen, from the astronomy organisation Jyväskylän Sirius.
The landing site got quite a bit of snow over the weekend, which makes finding and retrieving the meteorite quite difficult.
The rock shot into Earth's atmosphere at 15.4 metres per second, but it slowed down as it approached the ground.
Both the Ursa Astornomical Association and its local affiliate Jyväskylän Sirius are requesting that witnesses submit accounts or pictures of the shooting star.