[roc-chat] Re: Interested in Sonic Boom Sound
- From: Richard Dierking <richard.dierking@xxxxxxxxx>
- To: roc-chat@xxxxxxxxxxxxx
- Date: Thu, 14 Jun 2012 18:58:34 -0700
I'm not sure if it was during burn or immediately after because I was
actually looking away after the launch, but it sounded like the burn was
complete. Immediately after hearing the sound I looked up but the rocket
seemed to be OK. Also, I believe that deployment and recovery was OK.
What I would like to see is the same rocket and same motor used again to
see if this could be duplicated. But what rocket was it?
Richard
On Thu, Jun 14, 2012 at 6:08 PM, Kurt Gugisberg <kurtgug@xxxxxxxxxxxxx>wrote:
> Richard, I heard it too. Seemed to me it was shortly after burnout which
> makes it even more mysterious. I was watching the flight and, as far as I
> can visualize it, the burn ended and and half second or more later, the
> pop.
>
> Kurt
>
> -----Original Message-----
> From: Richard Dierking **
> Sent: Jun 14, 2012 8:49 AM
> To: roc-chat@xxxxxxxxxxxxx
> Subject: [roc-chat] Re: Interested in Sonic Boom Sound
>
> Ok, glad that someone else heard this Mike! And yes, this sounds like a
> very good explanation. I was a sharp pop and that's what surprised me. Do
> you know who's rocket it was? Just wondering if there's video out there.
>
> Thank you,
> Richard
>
> On Thu, Jun 14, 2012 at 12:29 AM, Mike Riss <rockt_dude@xxxxxxxxxxxxx>wrote:
>
>> Richard,
>>
>> I think I heard the same thing, and IIRC, I was standing in the safety
>> zone at the time. Seemed like it was towards the end of the motor burn.
>> It sounded pretty sharp to me. I was thinking it was that "liner getting
>> expelled" that usually gets thrown out as an explanation for that type of
>> sound.
>>
>> Mike
>>
>> --- On *Wed, 6/13/12, Richard Dierking <richard.dierking@xxxxxxxxx>*wrote:
>>
>>
>> From: Richard Dierking <richard.dierking@xxxxxxxxx>
>> Subject: [roc-chat] Interested in Sonic Boom Sound
>> To: roc-chat@xxxxxxxxxxxxx
>> Date: Wednesday, June 13, 2012, 8:20 AM
>>
>> During ROCstock after I was doing some maintenance on one of the back
>> pads and was walking away, a rocket was launched. It was about a 4"
>> diameter, and had a large enough motor to get it going *fast*. During
>> the flight, I definitely heard a "pop" but it didn't coincide with any
>> event I saw on the rocket. I thought that a sonic boom could only be heard
>> if the cone created by the disturbance passed by you. So, what could this
>> have been? I was thinking perhaps a sound generated by turbulence at the
>> base of the rocket?
>>
>> Anyway, this is the first time I've heard this kind of sound and I wonder
>> if someone has video that includes this "pop."
>>
>> Richard Dierking
>>
>>
> **
>
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