Sunfire III Hot Fire - All Footage

We are excited to announce that on the 14th March, we successfully hot fired our Sunfire III regeneratively cooled engine three times! The engine achieved the highest thrust out of any UK collegiate team with a thrust of 4.4kN.
Test 1: 3.6kN burn for 2 seconds
Test 2: 3.8kN burn for 5 seconds
Test 3: 4.4kN burn for 3 seconds
The AlSi10Mg engine was designed for 3.5kN and was pushed beyond its design point without any cooling issues. We’re looking forward to re-firing the engine later this year!
Many thanks to Aconity3D GmbH for their support and printing the engine in their AlSi10Mg performance alloy. The success of this engine demonstrates the capability of Aconity3D GmbH's printing for high performance applications.
Huge thank you to Airborne Engineering Ltd for the help with firing on the day providing their expertise and use of their test stand. We’re looking forward to firing more engines at airborne in the future.
#engineering #sheffield #universityofsheffield #space #rocketry #propulsion

[@no-damn-alias]

Looks like that'll be a good tailgater deterrent

[@cheezysot]

And so it really would be

[@PiDsPagePrototypes]

First test, 'yeah, nice',... Last test 'Wholly Fcuk YEEESSSSS'.!!

[@jasonhull5712]

Wow. That’s amazing and terrifying at the same time. 😮 Very cool. Love the purging sounds.

[@brettbartlett5960]

Awesome job!

[@silkabhattacharya8799]

Absolutely incredible!

[@BrainiacManiac142]

An amazing achievement!

[@bailey125]

Ok now this is epic

[@levyludeke2945]

congrats!

[@FunnyGuyexe4]

Damn the sounds' so cool

[@redTanto]

3d printed? How was it sintered? sps?

[@gregwarner3753]

What is the Specific Impulse? Fuel/oxidizer combinations?

[@jhonsiders6077]

So can it be fired for longer ?

[@bctpcp9546]

man, check those shock diamonds!

[@basic-decaf]

That's a lot of thermocouples. What type? Are they measuring EGT or wall temperatures? Aren't they too slow to yield any meaningful data for a 3-sec test?

[@truestopguardatruestop164]

What fuel does it burn?

[@-xirx-]

I am very curious, too

[@joshplayzgamezz]

magical expensive fuel

[@PiDsPagePrototypes]

The tears of lesser engineers

[@truestopguardatruestop164]

How is this even possible?

[@ayoksusune8095]

Turbo pump semprot dari samping putaran tak terbas ha

[@dubsar]

PORCH THIEVES, FEAR ME!

[@jerminemhyne4620]

Hot fire it for atleast 20 secs

[@stevos7111]

Batmobile Engine......

[@deankelz29]

doesnt seem that powerful 🤣

[@bishop8958]

Compared to other rocket engines, it's not that strong, only intended for 3.5kN, but that's still strong enough to bring a car from 0 to 60 in about 9 seconds depending on the weight of the car. And even then, they were firing it at 4.4kN, which is above its intended specifications.

[@deankelz29]

@@bishop8958 i was being sarcastic it seems rather powerful lol but yeah thanks for the info

[@bishop8958]

@deankelz29 Ah my bad, sarcasm is hard sometimes on the internet.