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  #11  
Old 09-24-2022, 06:39 AM
PaulK PaulK is offline
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Quote:
Originally Posted by Initiator001
Gary Rosenfield posted on 'that other rocket forum' that the E24 will use the same 29mm case as the F52 and F67 single use motors and be a full 40 n-sec total impulse.
Nice. This will be a great way to give a little extra boost to Estes 29mm kits. It may be targeted at the E16, wonder if it'll be priced the same.
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  #12  
Old 09-24-2022, 09:15 AM
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ghrocketman ghrocketman is offline
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If priced same as the Estes E16, they should sell plenty.
If significantly more, not so much.
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  #13  
Old 09-25-2022, 05:55 PM
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Royatl Royatl is offline
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Quote:
Originally Posted by georgegassaway

I checked the thrust curve of the Aerotech Enerjet F67, and am glad to see that it is not like the classic F67 with the progressive thrust curve. That curve had low thrust at liftoff, and reached max thrust at burnout. Which is a terrible thrust curve unless you are aiming for supersonic (which nobody could prove in those days, and is a teeny niche market). The few Enerjets I flew, shredded almost every model I flew them in. Including E24's (I think most of them were E24's).
.....

So this makes me think the E24 won't have that bad progressive thrust curve, either.



Awwww. but I *liked* that thrust curve!

Of course, with the way people build rockets nowadays (HEAVY), it probably would be a bad idea.

I loved the way rockets would lift off slowly on an invisible plume (not unlike the lunar module lifting off from the moon), then suddenly disappear, though if you could follow the rocket, you'd see a bright dot at the rear.

https://youtu.be/FG1dxTc-C7o?t=2510

This video is of a stripped down Centuri Saturn V with a Maxi Alpha III on top, so it was much lighter than a similar sized rocket would be now. It was also on a Composite Dynamics ProJet F40, which was of similar construction to the Enerjets. It was also shot at a slightly higher frame rate
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