Mitsubishi Heavy Industries Limited

Jfe Steel Corporation

Jfe Bars & Shapes Corporation

Keisuke Ando

Takashi Iwamoto

Kunikazu Tomita

Shunsuke Araki

Yasuhiro Toyoda

Tatsumi Kimura

Yoshihiko Ueno

Kimihiro Nishimura

Satoshi Igi

Kazuhiro Yamada

Masahiro Kato

Masahiro Yoshida

Kazukuni Hase

Katsuyuki Ichimiya

Kazunori Masukawa

Shojiro Furuya

Kiyoshi Uwai

Shinji Mitao

Yasuhiro Omori

Yoshihiro Sera

Kazuaki Fukuoka

Mariko Hirokane

Hiroshi Kawato

Kenichiro Kawabata

Kazuya Tokunaga

An observation control device is applicable to a detector installed onboard a spacecraft for performing observation. The observation control device includes an orthogonal direction control unit configured to move an observation range in a direction orthogonal to a travel direction of the spacecraft, the observation range being a range observed by the detector, and a travel direction control unit configured to move the observation range in the travel direction of the spacecraft.

Observation control device and spacecraft, observation control method, and observation control program

A case hardening steel having excellent fatigue resistance is provided at relatively low production cost. A case hardening steel has a chemical composition containing C: 0.10% to 0.30%, Si: 0.10% to 1.20%, Mn: 0.30% to 1.50%, S: 0.010% to 0.030%, Cr: 0.10% to 1.00%, B: 0.0005% to 0.0050%, Sb: 0.005% to 0.020%, and N: 0.0150% or less in a predetermined range, and further containing Al: 0.010%&#x2264;Al&#x2264;0.120% in the case where B&#x2212;(10.8/14)N&#x2265;0.0003%, and 27/14[N&#x2212;(14/10.8)B+0.030]&#x2264;Al&#x2264;0.120% in the case where B&#x2212;(10.8/14)N&#x3c;0.0003%.

Case hardening steel

The rail having a chemical composition containing C: 0.70-0.85 mass %, Si: 0.50-1.60 mass %, Mn: 0.20-1.00 mass %, P: 0.035 mass % or less, S: 0.012 mass % or less, Cr: 0.40-1.30 mass %, the chemical composition satisfying the formula (1)0.30&#x2264;[% Si]/10+[% Mn]/6+[% Cr]/3&#x2264;0.55&#x2003;&#x2003;(1)

Rail and method for manufacturing same

The rail having a chemical composition containing C: 0.70-1.00 mass %, Si: 0.50-1.60 mass %, Mn: 0.20-1.00 mass %, P: &#x2264;0.035 mass %, S: &#x2264;0.012 mass %, Cr: 0.40-1.30 mass %, where Ceq defined by the formula (1) is 1.04-1.25,Ceq=[% C]+([% Si]/11)+([% Mn]/7)+([% Cr]/5.8)&#x2003;&#x2003;(1)

A command control system includes an interception predicting section and an assigning section. The interception predicting section calculates a predicted intercept point of a target to be shot down and a guided missile to shoot down the target. The assigning section acquires first weather data of the predicted intercept point, and generates a launching instruction based on the first weather data so as to launch one of a first guided missile and a second guided missile as the guided missile. A method by which the first guided missile detects the target and a method by which the second guided missile detects the target are different.

Command control system, interceptor system, and command control method

Disclosed are a case hardened steel which is suitable as a material for producing mechanical structural parts having high rotating bending fatigue strength and impact fatigue strength at a relatively low cost, and a method of producing the same. The case hardening steel has a chemical composition containing, by mass %, C, Si, Mn, P, S, Cr, Mo, B, Ti, N, and O within a range satisfying a predetermined relationship, and Al in at least a predetermined amount in relation to the B, N, and Ti contents, with the balance being Fe and inevitable impurities, wherein &#x221a;I&#x2264;80 is satisfied, where I represents an area in &#x3bc;mof an oxide-based inclusion located at the center of a fish-eye on a fracture surface of the case hardening steel after being subjected to carburizing-quenching and tempering and subsequently to a rotating bending fatigue test.

Case hardening steel, method of producing the same, and method of producing gear parts

A jet engine has an inletconfigured to introduce air, and a combustorhaving a fuel injection portthat injects a fuel, and configured to combust the fuel injected from the fuel injection portby using the air. The combustorhas a separation sectiondefining the air passage FA through which the air flows, between a rear endof the inlet and the fuel injection port. A plurality of turbulent flow generating sections () are arranged in the separation sectionto makes the air flow turbulent. Each of the plurality of turbulent flow generating sections () contains a member (B) which can restrain the turbulence of the air flow by moving or disappearing. It can be prevented that a high-pressure region reaches the inlet so that the thrust of the jet engine is reduced.

Jet engine, flying object, and operation method of jet engine

A case hardening steel suitable as raw material for producing a mechanical structural part having high rotating bending fatigue strength and pitting fatigue strength at relatively low cost and a method of producing the case hardening steel are provided. A case hardening steel comprises a chemical composition containing, in mass %, C, Si, Mn, P, S, Cr, Mo, Al, N, and O in a predetermined relationship, with a balance being Fe and inevitable impurities, wherein &#x221a;I&#x2264;80 (where I denotes an area (&#x3bc;m) of an oxide-based inclusion located in a fish eye central portion at a fracture surface after subjecting the case hardening steel to carburizing-quenching and tempering and then performing a rotating bending fatigue test).

Case hardening steel, method of producing case hardening steel, and method of producing gear part

A launched flying object is configured to continue to transmit a signal to a launching device. The launching device is configured to continue to receive the signal from the launched flying object, continue to calculate a probability when the launched flying object intercepts a target from a distance, a relative velocity and a relative angle between the launched flying object and the target, and output a final interception probability when communication from the launched flying object is stopped.

Interception probability calculation system, flying object and interception probability calculating method

A threat degree of each of targets is numerized based on data obtained by observing the targets after launching of the flying objects. Also, the firepower of flying object is numerized based on the state of flying object after the launching. The optimal assignment of firepower is calculated based on the numerized threat degrees and firepower, and is shared by the flying objects. Each flying object intercepts the target specified based on the optimal assignment.

Firing control system and firing control method

A target assignment system includes a sensor system which detects a position of a moving vehicle, an assigning section which determines the launcher system assigned with the moving vehicle in response to the position of the moving vehicle and generates a first display signal which shows the moving vehicle and a first launcher system, a display section which displays the moving vehicle and the assigned launcher system in real time in response to the display signal, and an input section which instructs a change of the assigned launcher system. The assigning section generates a second display signal in which the first launcher system is changed to a second launcher system, in response to an instruction of assignment change.

Target assignment system, command system, and target assignment method

The present invention provides a steel for nitrocarburizing having excellent mechanical workability before nitrocarburizing, and showing excellent fatigue properties after nitrocarburizing, which is suitable for applying in mechanical structural components for automobiles etc. prepared by adjusting the composition so that it contains in mass %, C: 0.01% or more and less than 0.10%, Si: 1.0% or less, Mn: 0.5% to 3.0%, P: 0.02% or less, S: 0.06% or less, Cr: 0.3% to 3.0%, Mo: 0.005% to 0.4%, V: 0.02% to 0.5%, Nb: 0.003% to 0.15%, Al: 0.005% to 0.2%, and Sb: 0.0005% to 0.02%, and the balance including Fe and incidental impurities, and setting the area ratio of bainite phase to the whole microstructure to more than 50%.

Steel for nitrocarburizing and nitrocarburized component, and methods for producing said steel for nitrocarburizing and said nitrocarburized component

An aerial vehicle includes an outer surface, an arithmetic unit and a control unit. The arithmetic unit calculates a control command using a control parameter. The control unit controls an attitude of the aerial vehicle or a thrust of the aerial vehicle based on the control command. At least a part of the outer surface of the aerial vehicle is composed of ablation material. The arithmetic unit changes the control parameter in response to an amount of shape change of the aerial vehicle caused by disappearance of the ablation material.

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Tokyo, Japan

Keisuke Ando