Questions tagged [jaxa]

Questions about JAXA, the Japanese Space Agency.

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Is the SS-520-5 both a floor wax and a desert topping? Can it be considered both a sounding rocket and an orbital vehicle?

The answer to If there "won't be" rockets to launch individual cubesats, then why did JAXA build exactly that? (SS-520-xx) begins The SS-520-5 launcher is not intended to be an ...
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Osculating oscillations! What makes Akatsuki's eccentricity and inclination about Venus vary periodically?

Watching this animated GIF of Akatsuky's orbit I noticed that it seems to "walk" around Venus. Some orbital elements oscillate ~3-4 times a year, others drift and then slowly "step up ...
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What antennas does JAXA use to communicate with its deep space spacecraft? Does it have a deep space network of its own?

@BrendanLuke's answer to Are there currently any spacecraft in orbit around Venus that might (or might not) be at risk of meteoric dust from comet Leonard C/2021 A? alludes to the exciting story of ...
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What is this black smoke coming from an all solid fueled Epsilon rocket?

I saw a clip of a recent (Nov. 5th, 2021) JAXA Epsilon launch on Instagram (link). Shown differently here in a YouTube video @~0:23s: It's an entirely solid fueled ...
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How did Japan’s Hayabusa 2 mission "make extensive use of deployable cameras to get scientific imagery"? Did it ever produce a "PR selfie"?

Scott Manley's recent video China's Mars Rover Zhurong Has Completed Its Primary Mission, Reaches New Milestone includes the following: And if you thought that dropping a camera on the surface of ...
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JAXA/NASA astronauts on a Shuttle mission; was it like dual citizenship/joint appointment or did one agency take precedent?

Professor and former astronaut Takao Doi does many things, including being a Space Shuttle mission specialist, an amateur astronomer and discoverer of two supernovae 2002gw IN NGC 922 and Supernova ...
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How does one throw a boomerang in space? Does it return?

From today's BBC's Japan developing wooden satellites to cut space junk: "We are very concerned with the fact that all the satellites which re-enter the Earth's atmosphere burn and create tiny ...
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Why did Hayabusa-2's capsule's parachute have transparent panels?

JAXA's photo of Hayabusa-2's capsule, at its landing on 2020 Dec 6, shows that its parachute canopy had some non-opaque sections. Why? Transparency has no advantage for this mission. Compared to ...
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From interplanetary space to the Australian Outback, how will Hayabusa2's return capsule be tracked? Desert Fireball Network perhaps?

Wired.com's For the Second Time Ever, an Asteroid Sample Returns to Earth says that "the sample return capsule from Hayabusa2" will land "under parachute in the Australian outback" ...
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MT-135 Sounding Rocket info / design

I'm searching for any design file or deep-info on the MT-135 rocket, the fuel used, engines, engines info, any thing really. I have deep-searched on tons of sites but I just find few missions that ...
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How are Kounotori modules unbolted? Who or what does the unbolting?

NASA Spaceflight's Final JAXA H-II Transfer Vehicle bids farewell to ISS says: Following CBM vestibule depressurization, 16 bolts that held the Kounotori 9 spacecraft to the Station were removed in ...
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Why is the Fuji capsule design philosophy not seen in other proposals?

Fuji is my favorite unflown dead spacecraft proposal (narrowly beating out Dynasoar). I am well aware of why Fuji has its weird/unique design, but what I'm curious about is why it's unique. In my ...
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How is this reentrant storage area on JAXA's HTV 8 protected during launch?

The image below is from Spaceflight Now's Fresh batteries, experiments on the way to the International Space Station In the photo there appears to be a giant reentrant "hole" in the side of the HTV ...
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If there "won't be" rockets to launch individual cubesats, then why did JAXA build exactly that? (SS-520-xx)

The question Why isn't there a rocket to launch a single cubesat? has several good answers that explain why there isn't and/or will not likely be one, based mostly on commercial viability, consistent ...
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How does the JEM/Kibo connect to the "Porch Module"?

In this answer I saw Figure 35 of the encyclopaedic ISS Interface Mechanisms and their Heritage also shown croped below, and in this answer I see the second image (though an SE/imgur bug shows it with ...
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What is the US president talking about re US/Japan dramatic expansion of military(?) cooperation?

According to the Bloomberg article Japan Astronauts to Soon Join U.S. in Trip to Mars, Trump Says: The U.S. and Japan will “dramatically expand” their cooperation in outer space, with missions to ...
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How far did Hayabusa-2 back off before the "bomb" went off?

The BBC News article Hayabusa-2: Japanese probe set to 'bomb' an asteroid says: The charge is carried on the Small Carry-On Impactor (SCI) device. This is a 14kg conical container attached to ...
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Does JAXA have any super heavy lift rockets?

Recently, JAXA and Toyota announced that they are developing a self driving rover for the late 2020s, do they have the ability now to launch anything that heavy, or are new rockets and launch centers ...
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How does Hayabusa-2's "Communication Simulator" on its website work? What does it show?

The pinned tweet on Hayabusa-2's Twitter account leads to http://haya2now.jp/en.html which is a kind of control panel readout of the spacecraft's situation. I clicked ...
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How does the HTV Small Return Capsule get used?

The HTV Small Return Capsule (HSRC) is on the HTV-7 mission to the ISS. It is a sample return, small capsule, shaped as you would expect, like a small Apollo/Orion/Dragon shape. It is shipped up ...
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Nature of Hayabusa-2's "Home Position" relative to Ryugu? Is it Ruygu's L1?

This tweet "from Hayabusa-2" via JAXA shows the diagram below, which seems to suggest that the Hayabusa-2 spacecraft tends to remain between the asteroid Ryugu and the Sun. Does Hayabusa-2 have to ...
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What criteria was used to select potential landing sites for Hayabusa-2's rovers on Ryugu?

The NYTimes' article Hayabusa2 Prepares to Drop Rovers on Asteroid Ryugu says Sept. 19 Rock Hoppers Hayabusa2 is preparing to deploy two small rovers this week, each about 7 inches wide. Ryugu’s ...
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How will JAXA's space elevator-testing cubesat experiment work?

The Infobae article Japón inicia hoy el ambicioso proyecto de construir un ascensor espacial which translated from Spanish into English by Google says Japan begins today the ambitious project to ...
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How was "Space Ram" (instant ramen noodles) prepared and eaten on the Space Shuttle?

The BBC Witness Podcast The Invention of Instant Noodles mentions that "Space Ram" (ramen noodles for space) was developed for eating on the Space Shuttle. After about ...
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DLR Mascot asteroid lander's unusual "torque wheel-based" propulsion system

Soon the Japanese Hayabusa 2 mission will release the German "Mascot" Lander onto the surface of the asteroid. The small box shaped lander then impacts the surface and preforms science experiments. ...
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What ion engine is used by Hayabusa2?

Hayabusa2 is on its final approach to asteroid 162173 Ryugu, expected to arrive in July 2018. Like its predecessor, Hayabusa2 uses an ion thruster for deep-space propulsion, but I can't find any ...
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How could JAXA not know when Hayabusa2 will arrive at asteroid Ryugu?

The Nikkey Asian Review article Probe nears asteroid to unlock secrets to life's origins; Hayabusa2 mission includes return of samples after 18-month study begins: TOKYO -- A Japanese space probe is ...
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Why JAXA's tilted launch from a tilted rooftop?

According to the just posted NASA Spaceflight news item Japanese sounding rocket shoots for record-breaking orbital launch: Japan conducted another attempt to launch a miniature satellite via a ...
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What space suit is this? [duplicate]

I recently saw this picture, and it puzzles me as to what they are wearing. At first thought, I imagined that they would be space suits. But, they went in a Soyuz craft, and the suits for a Soyuz don'...
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Could the Japanese H-IIB carry a payload to the moon?

The Japanese H-IIB seems like an interesting cost effective system. I see that it can carry a hefty payload into Earth orbit. Could it send a smaller payload to the Moon?
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Will JAXA try again to launch TRICOM-1 with the "world's smallest orbital rocket" SS-520-4 again?

From the Spaceflight 101 article Experimental Launch of World’s Smallest Orbital Space Rocket ends in Failure: SS-520-4 lifted off from the Uchinoura Space Center in Japan’s Kagoshima prefecture at 8:...
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How does JAXA's "Int-Ball" manage airflow to optimally navigate inside the ISS?

above: From the BBC's Japan's zero-gravity space drone sends first pictures from ISS. This is JAXA's GEM internal ball camera, or "Int-Ball". Kawaii! It looks like it uses a three axis attitude ...
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Would it be possible to "ride the wave" on Venus?

Update: Newly published paper in Nature Geoscience Atmospheric mountain wave generation on Venus and its influence on the solid planet’s rotation rate has open-access links in Science News, ...
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Fire pit at Tanegashima space center

During the HTV-6 launch I saw a large, enclosed fire pit next to the launch pad. (On the left of the picture below). What is its purpose? Video of the fire pit (@ 24:54):
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How does NASA compare with other space agencies in terms of RoI (in terms of science: papers published per $ invested) [closed]

How does NASA's funding compare to other space agencies' funding? How many papers are they publishing and how many US patents do they have? Compare different space agencies in terms of number of ...
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How are solar panels protected from the Sun?

In 2003, JAXA sent a probe, Hayabusa, to an asteroid named Itokawa. On the way to the asteroid, there was a large solar flare which damaged the probe's solar cells. I've been searching through the ...
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How will Akatsuki get into orbit around Venus?

JAXA's Akatsuki was supposed to enter orbit around Venus in 2010, but the insertion failed. Its orbital maneuvering engine was supposed to burn for 12 minutes to get it into position, but it stopped ...
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Does the ISS team plan cargo flights when at half crew on purpose?

A number of times now, the cargo vehicles (Dragon, Cygnus, or HTV) seem to have arrived while the station was between crew switchovers. With indirect crew handovers, three crew depart in a Soyuz, ...
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What is JAXA looking for on the Moon in the way of 'potential utilization'?

I was reading this article (terrible layout, sorry). This paragraph caught my eye: While Japan is hoping to send humans to the Moon sometime in the future, Keiji Tachikawa, president of the Japan ...
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How much of an advantage do equator-proximal launch sites provide?

Comparing ESA's Kourou (5° off) with NASA's Cape Canaveral (28°) and JAXA's Tanegashima (30°) launch sites, how advantageous is proximity to the equator? Considering the fact that the ESA and all of ...
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How are (robotic) government space exploration missions in Japan initiated?

The process of how a "government space mission" is initiated is kind of an interesting question to me. In the US and Europe, one has to deal with a series of institutions, agencies, politicians, write ...
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