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#480
by
FutureSpaceTourist
on 01 Apr, 2020 14:13
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https://twitter.com/copsub/status/1245313575381618688 Due to low ethanol/H2O fuel combustion temps and production difficulties we're facing with a conical, regen cooled nozzle in a BPM100 size engine, we're trying a different nozzle design. Is it the 1st Aerospike Propelled Rocket Intended to Launch by a crowdfunded organization?
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#481
by
whitelancer64
on 01 Apr, 2020 14:30
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That's an excellent April 1st post
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#482
by
FutureSpaceTourist
on 05 Apr, 2020 13:34
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https://twitter.com/copsub/status/1246778379669471234Making the first drogue prototype for the booster is tedious work.
tests will confirm details, but It will take 3 drogue parachutes of about 3m^2 to bring the booster to a speed where the main parachutes can be deployed.
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#483
by
FutureSpaceTourist
on 05 Apr, 2020 19:02
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#484
by
FutureSpaceTourist
on 10 Apr, 2020 16:41
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https://twitter.com/copsub/status/1248644981851635714 If you've ever spun on an office chair, even slowly, for a longer period of time, you likely know it gets uncomfortable quite fast. This can happen in multiple axes during asymmetrical capsule separation. Our Reaction Control System will stop our astronaut getting dizzy in space.
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#485
by
Steven Pietrobon
on 11 Apr, 2020 00:49
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You can learn to not get sick spinning, but it takes a few ice dancing lessons. :-)
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#486
by
FutureSpaceTourist
on 12 Apr, 2020 17:01
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twitter.com/copsub/status/1248308714236493832
Crewed, crowdfunded rocketry is a hot topic these days.
Here are some of the items that have come a little too close to the heat during testing. 🔥🔥🔥
Do you know why we used a hair dryer?
https://twitter.com/copsub/status/1249381512400769028 Those, whose answers were around LOX valves were correct! 
We really wanted to make sure that valve operates when it should, but on a budget:
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#487
by
FutureSpaceTourist
on 13 Apr, 2020 18:19
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https://twitter.com/copsub/status/1249763196291989505 New Video! We talk more about our 3D printed fuel injectors for our monster BPM100 engine and compare their mass flow to their machined counterparts. Enjoy! 🚀
And thanks @DJSnM for letting us use one of your graphics!
bit.ly/3cjo1eP
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#488
by
FutureSpaceTourist
on 15 Apr, 2020 18:30
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#489
by
FutureSpaceTourist
on 19 Apr, 2020 16:05
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#490
by
FutureSpaceTourist
on 20 Apr, 2020 18:21
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https://twitter.com/copsub/status/1252298527125929986It's not until the suspension lines are added that it starts looking like a parachute. This is the 1st drogue prototype for our Spica booster.
Our plan is landing the booster gently for re-use, saving time & crowdfunder money. Video on how it's finished: bit.ly/3blYEt2
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#491
by
FutureSpaceTourist
on 23 Apr, 2020 14:44
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https://twitter.com/copsub/status/1253333326514892802 With the rocketshop being only open to single individuals at a given time during the pandemic, one of the things we manged to finish during the period is welding bulkhead tubing for Spica propellant tanks. Once the quarantine is over we should be able to weld them onto the tanks!
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#492
by
FutureSpaceTourist
on 25 Apr, 2020 17:34
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#493
by
FutureSpaceTourist
on 26 Apr, 2020 15:22
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#494
by
FutureSpaceTourist
on 03 May, 2020 15:24
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#495
by
FutureSpaceTourist
on 09 May, 2020 20:00
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https://twitter.com/copsub/status/1259125000629637121Half way through cutting all the ribbons for a ribbon hemisflo drogue parachute prototype. Each set has to be cut at different lengths and angles on the ends to give the drogue the right shape.
27 ribbons on 12 gores = a very tired CS-member...
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#496
by
FutureSpaceTourist
on 10 May, 2020 19:34
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https://twitter.com/copsub/status/1259561653131268099 Last Sunday John trimmed a few details on the anti-vortex baffles and welded them onto the two end-caps, which are going to make up the bottom of Spica's propellant tanks. This is a crucial element preventing pressurization gas ingestion into engine feed lines close to MECO. 🚀
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#497
by
FutureSpaceTourist
on 11 May, 2020 18:23
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https://twitter.com/copsub/status/1259903374356512768 We finally got a chance to test the Supersonic X drogue design this weekend. Or, the onion, as we now call it.
This is a candidate for bringing down the speed of the booster before opening the main parachutes, so that we can make the booster reusable.
Human skydive is next 🤗
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#498
by
FutureSpaceTourist
on 12 May, 2020 15:47
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In this video we talk about hemisflo and conical ribbon parachute designs and their challenges for our upcoming Spica rocket booster recovery. We want Spica to be a reusable rocket to increase our flight frequency and reduce production costs. If you find parachutes and rockets interesting, you can also visit Delft Aerospace Rocket Engineering who are always helpful when we need parachute testing: https://dare.tudelft.nl/
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#499
by
FutureSpaceTourist
on 14 May, 2020 18:40
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https://twitter.com/copsub/status/1261000938241896450As another candidate for helping to reuse the Spica booster, 324 individual ribbons have been sewn onto their center ribbon for this first hemisflo ribbon drogue parachute prototype. The center ribbon is 108 cm. Our recent video on the hemisflo design:
bit.ly/2Z9E2Rz
We really wanted to make sure that valve operates when it should, but on a budget: