It's a spinoff from HyEND with their HEROS 1-3 rockets launched for the DLR STERN project.HEROS used the HyReS 10 hybrid (N2O + Paraffin, 10kN) engine. HyImpulse tested a 10kN LOx Paraffin hybrid engine, called HyPLOX10. See the youtube video.The HyPLOX75 is larger scale hybrid rocketmotor using the same technology.HyImpulse is a startup working on a sounding rocket. So shouldn't this be placed in the suborbital segment?I think suborbital space has long been overlooked by the commercial market. Luckily this has changed in Europe.They might be a entry in ESA BOOST!So why is a hybrid rocket better than a solid or bi-liquid rocket?And why is LOxParaffin better than LOx-HTPB, HTP-HTPB, HTP-Parrafin, N2O-HTPB/Paraffin?I think it's not a winner, because of LOx. Sorry.
Test firing of our 75kN hybrid rocket motor at @DLR_de Lampoldshausen confirms that our proprietary Paraffin/LOX formulation for rocket propellants achieve the same high performance as liquid hydrocarbon-based fuels with simplified #propulsion system & at a fraction of the cost.
The hybrid enjoys several advantages over a liquid system. One of the main advantages is a reduced explosion hazard, since an intimate mixture of oxidizer and fuel is not possible. In addition, the hybrid rocket requires one rather than two liquid containment and delivery systems. The complexity is further reduced by omission of a regenerative cooling system for both the chamber and nozzle. A wide throttle range is relatively easy to achieve in a hybrid where throttling the oxidizer automatically throttles the fuel and there is no requirement to match the momenta of the dual propellant streams during the throttling operation. Throttling ratios up to 10:1 have been demonstrated in hybrid motors.Lastly, the fact that the fuel is in the solid phase makes it very easy to add solid performance enhancing materials such as aluminum. This enables the hybrid to gain a specific impulse (Isp) and density advantage over a comparable hydrocarbon fueled liquid system. Metal additives can be used to reduce the O/F ratio for maximum specific impulse thereby enabling a reduction in the required mass of liquid oxidizer.
Compared to a solid rocket the hybrid is much less sensitive to cracks and de-bonds in the propellant, has a higher specific impulse (Isp) and can be throttled including shutdown and restart on demand.
I wonder why HyEnD (student group) rocket motor tests are posted in the HyImpulse (company) topic. For HyEnD and other German student groups we have the STERN topic in the suborbital section.The HyFive and later HyLight are N2O Paraffin hybrid rocket engines developed by student group HyEnD.Some post graduetes from HyEnD founded HyImpulse, but further than that the relation doesn't go.
In the latest December 2020 issue of NewSpace the business case of Southern Launch has been described in detail. The article called ‘Launching Smallsats: The Example of Southern Launch’ appeared in the NewSpace issue Vol 8 (4), pp. 201-212 (DOI:10.1089/space.2020.0034 - https://lnkd.in/gKNt8GN).The article also features an artist impression of the HyImpulse SL1 micro-launcher (see picture) under development in Germany. Southern Launch has a preliminary agreement with this company, which is offering South-Australia as a launch site for potential customers to reach polar orbits with payloads up to 500 kg.
First suborbital launch NET September 2021. https://translate.google.com/translate?sl=de&tl=en&u=https://www.raumfahrer.net/news/raumfahrt/02022021105615.shtml
Hyimpulse: Serial production of full-scale 75kN hybrid rocket motors has started.Qualified and to be used on our Sounding Rocket and Small Launcher.The inherent simplicity of hybrid system and the safe to handle choice of fuel (paraffin-candle wax) enables us to ramp up production easily (and anywhere!)P.S. Test footages coming soon !
HyImpulse's 75kN HyPLOX75 Hybrid rocket motor Qualification tests at Shetland Space CentreWe have successfully started the first series of #qualification tests of our flight scale 75 kN #hybrid motor this week.Thanks to our great #team, inherently safe hybrid motor system and mobile test bench, we have setup our infrastructure in just 2 weeks from arrival till the first hot fire tests! The maiden flight of this motor with our Sounding Rocket SR75 is scheduled for Q4 2021.This important milestone puts us at the forefront of small launcher developments in Europe and the UK.The campaign is currently underway on Shetland islands and is hosted by the Shetland Space Centre. Shetland Space Centre CEO Frank Strang said: “It has been a tremendously exciting two weeks at Scatsta, with the first rocket engine testing marking a major milestone in the development of the space industry in #Shetland.”Big thanks to the great support and cooperation from Shetland Space Centre, Shetland Islands Council and our suppliers in the Shetland Islands.
Space logistics and transportation company D-Orbit announced the signing of an agreement with HyImpulse Technologies aiming at a joint launch and deployment mission that will leverage HyImpulse’s SL1 launcher and D-Orbit’s ION Satellite Carrier.SL1 is a three-stage hybrid rocket designed to transport to LEO satellites of up to 500 kg. ION Satellite Carrier (ION) is D-Orbit’s proprietary orbital transportation vehicle designed to ferry a batch of satellites across orbits and release each satellite into a customized orbital slot, while at the same time operating multiple hosted payloads during a single mission. This partnership will offer, for the first time, a combination of a launcher and orbital transportation vehicle that maximizes the mass of SL1’s payload to sun-synchronous orbit, and leverages ION Satellite Carrier to deploy satellites into orbits with distinct values of parameters like altitude, inclination, and local time of the ascending node (LTAN).<snip>The joint mission is targeted to launch in 2025.
Seems like a slight slip: they had been planning on launching SR75 in September, but now they're talking about Q4. Not entirely clear what implications (if any) that would have on their plans to launch SL1 to orbit in 2023.Yes, I know, launch dates almost always move to the right, I'm just suggesting that by observing how HyImpulse's dates move in particular, we can get insight into the company.
On 2nd March 2022, HyImpulse rolled out its suborbital sounding rocket SR75 at its headquarters in Neuenstadt am Kocher, Germany. Its maiden flight is expected in Q3 2022. In addition to being available to customers, it will also test tech for the company's larger SL1 vehicle.