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  #271  
Old Yesterday, 01:18 AM
A Fish Named Wallyum's Avatar
A Fish Named Wallyum A Fish Named Wallyum is offline
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Quote:
Originally Posted by BEC
Since you brought it up, here it is.

I still think, subjectively, that Q-Jet cases are as not hot post firing as Chinese Quest BP motors - especially the Cs. But the plastic cases must be hot enough to be deformable immediately after firing. None have felt "soft" when pulling them out of a normally recovered model (well, as near normally as you can what with the delay and ejection charges outside of what we'd consider "normal").

There's a TV commercial about that.
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  #272  
Old Yesterday, 03:04 AM
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blackshire blackshire is offline
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Quote:
Originally Posted by BEC
Since you brought it up, here it is.

I still think, subjectively, that Q-Jet cases are as not hot post firing as Chinese Quest BP motors - especially the Cs. But the plastic cases must be hot enough to be deformable immediately after firing. None have felt "soft" when pulling them out of a normally recovered model (well, as near normally as you can what with the delay and ejection charges outside of what we'd consider "normal").
Whoa...at first glance (in the small thumbnail image, just before I read your posting), I thought it was a pickle! I guess the combination of its heat-caused relative plasticity, its rapid (gravity plus backward [downward?] ejection out the back of the rocket) downward travel, and the hardness of the ground where it hit may all have contributed to its deformation.
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  #273  
Old Yesterday, 11:14 AM
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Except for the last factor, yes. Sixty Acres Park is primarily a soccer facility and was being groomed for a week-long event as we were there. It's one of the softer places one can land rockets (or bits or rockets).
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  #274  
Old Today, 05:32 PM
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blackshire blackshire is offline
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Quote:
Originally Posted by BEC
Except for the last factor, yes. Sixty Acres Park is primarily a soccer facility and was being groomed for a week-long event as we were there. It's one of the softer places one can land rockets (or bits or rockets).
Thank you. To "forensically examine" this incident as much as it can be, was it found on the surface, or had it punched into the ground (even if it bounced back out, leaving a "dent" in the soil)? If the latter was the case, that would suggest that the motor case was quite plastic (in the way that "plastic" refers to the hot rock inside the Earth--heat-softened and pliable) at the instant of impact.
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Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
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http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
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