Instagram Pic of the Week

China’s first private rocket launch! OneSpace

GoPro Hero6: The First Spaceport America Cup in 4K

Video Caption: In June 2017, ESRA and Spaceport America held the 1st Annual Spaceport America Cup. Over 1000 students, from 12 countries brought 92 rockets to the event.

Shot 100% on GoPro – https://goo.gl/Umakhk
Special thanks GoPro for helping sponsor the event and for sending out a camera crew equipped with over a dozen Hero 5 and Hero 6 cameras!

Music TheFatRat “Fly Away (feat. Anjulie)”

For More information SA Cup – https://www.spaceportamericacup.com/
ESRA – http://www.soundingrocket.org/
GoPro – https://gopro.com/

Instagram Pic of the Week

Momo Rocket Launch July 29th

Interstellar Technologies Inc have been working towards launch of their Momo sounding rocket, this will be the first private rocket launch to go to space from Japan.

Momo is 9.9m long, 0.502m diameter and has a lift off weight of 1000kg. Able to deliver a 20kg payload to 120km in altitude the rocket is powered by a 12kN lox/ethanol pressure fed engine.

You can download the payload user guide here for more information.

The team have had a very active development path, I thoroughly suggest checking out their YouTube channel if this is the first you have heard of them!

Although out of the amateur realm, I have been following the group for some time, so fingers crossed for a successful launch.

The launch is scheduled for July 29th.

Fathon II Launching This Saturday

UCSRPL have set off to launch their Fathon II rocket this weekend.

Instagram Pic of the Week

Data from Nexø I

Nexø I launch (Credit: Copenhagen Suborbitals)

We observe a peculiar behaviour on the LOX side not experienced before during static test. The stable pressure at around 13 bar from T + 10 to T + 40 seconds more or less reveals what has gone awry. The stable pressure can have one of two causes, either the main valve is closed, or the pressure is maintained by rapid evaporation of LOX forming GOX (Gaseous OXygen). The former can be excluded as the position of the main valves is logged by the ECU (Engine Control Unit), and these data show both valves open until splashdown. The other cause is better known as VaPak or autogenous pressurisation.

Having pressurisation through VaPak from T + 10 seconds is an obvious indication that the LOX has been warm, is has only been held at sub-critical state by a high pressure. In this state the slightest fall in pressure will result in the LOX shifting to super critical state where it evaporates at a rate high enough to maintain a stable pressure. This may sound like a fantastic feature, but for Nexø I it proved fatal. In its present design, the BPM-5 engine injector isn’t capable of working correctly with super critical LOX, the injector is designed to inject fluid, LOX, and not GOX or some obscure combination of LOX and GOX for that matter. Had we just had a thermal sensor in the LOX dome, we would now know the exact conditions …

Based on the pressure charts we can conclude that the LOX has been close to going critical from the very start. From this we can assume that we have had GOX flow through the injector from the very start, resulting in a lowered mass flow. This has again resulted in lowered chamber pressure and thus a higher than expected fuel flow. This explains both the low engine thrust and the relatively fast depletion of the fuel tank, resulting in the tank being depleted at T + 24.4 seconds.

Read the full update here.