Japan’s H-II Transfer Vehicle (HTV) has been quite the little workhorse for the International Space Station, delivering some of the most valuable payloads to the floating space lab to date. I covered its maiden voyage all those years ago praising the craft’s capability to deliver standard payload racks in the absence of the Space Shuttle. Since then it’s gone on to do exactly that with the next 2 flights of the HTV delivering important cargo like Gradient Heating Furnace (used to create large, high quality crystals in microgravity) and the Aquatic Habitat which has allowed astronauts to study how fish live and breed over multiple generations in space. This weekend past saw the HTV launch for the 4th time from Yoshinobu Launch Complex at Tanegashima for a planed 35 day mission to the ISS.
I hadn’t covered any of the subsequent launches of the HTV, mostly because I didn’t find anything particularly interesting to write about them at the time, but looking over them I’m starting to regret my decision. In the 4 years since the HTV’s first launch every iteration of the craft has seen numerous improvements from routine things like improving the communications and avionics packages right through to improving the craft itself to be more lightweight. More interesting still is that JAXA has big plans for future iterations of the HTV, adding in the capability to return cargo to Earth (something that only the Soyuz and SpaceX Dragon are currrently capable of) by 2018 and, impressively, a crewed version that would be very similar to the Soyuz in terms of payload. The more ways we have of getting into space the better and I can’t think of a better craft to use as a base than the HTV for shipping humans up there.
However the HTV’s future isn’t what the space community is all abuzz about with this particular launch, it’s about the curious payload of a little robot called Kirobo. It’s a 34cm tall humanoid robot that’s been designed to communicate with its fellow human astronauts as well as people back on the ground. It’s equipped with voice and face recognition and can recognize emotions of the person its speaking to. It’s essentially designed to further investigate human-robot interactions, something that could prove to be pivotal in long haul flights to our nearest celestial neighbors. The ISS is no stranger to robot visitors either as they’ve been home to Robonaut 2 since early 2011 however it was more geared towards being a telepresence robot that could assist the crew with EVAs that required dexterous movement.
Alongside that plucky little robot companion will be 5.4 tonnes of other cargo for the ISS including support equipment for Kirobo, some cryogenic equipment and spare parts for the ISS itself. Interestingly there will also be 4 CubeSats brought along with it, two of which are ArduSats which are based off the Arduino development boards. Pico Dragon is a Vietnamese creation which will collect space and environment data as well as being a test bed for future satellite communication systems. TechEdSat, which as far as I can tell has no association with the Microsft TechEd brand, is designed to evaluate Space Plug-and-Play Avionics for the San Jose State University. They’re interesting because these usually tag along on other commercial flights and are deployed prior to the main payload although this isn’t the first time the ISS has launched CubeSats for others.
Organisations like JAXA give me a lot of hope for humanity’s space faring future as not only have they delivered a service routinely over the past 4 years they’ve pushed the envelope of their capability each time. The news that we could be seeing crewed vehicles from them within 10 years is incredibly exciting and the HTV will be a welcome addition to the growing family of launch services. They might not be as sexy as SpaceX but they’re doing a service that no one else can do and that’s something that we’ve got to appreciate.