Lure Head 3D

J7W1 Shinden Restoration 3D Design Tips

Archive for November, 2007

Therefore,is it Phantom?

Posted by kikakuya on November 27, 2007


zentai2.gifzentai3.gifFor the time being,the primary search about this leg is an end. The arm for storing was attached. 90% of the leg was completed now. The oil cylinder attached in the body was omitted since it is not visible from outside.

The following is the prediction structure of a hinge portion. Although much searched in the network, details of this portion were not found.

hinge.gif

Japanese is here.

Posted in 3D, J7W1 Shinden | Tagged: , , , , , , , , , , , , | Leave a Comment »

A proof as a Fighter

Posted by kikakuya on November 27, 2007


zenrsim2.gifzenrsim3.gif

The mechanism portion of a front wheel is still under construction. I got some ideas from the photograph of the U.S. site. Although the image approached closely, the information about the equipment on the hinge could not get yet. Some photographs offered the very good idea. It was a new hypothesis. The upper hinge is the structure divided into two forks. The following photograph was very good information for the Investigation. This structure resembles the structure of the handle circumference of the bicycle. Some clamp implements have sandwiched the pillar.

zenrshi1.gif

zenrshi2.gif

zenrshi3.gif

Although the door had not been made yet, the balance was likely good for body. This front wheel is nearly 2m tall. But, If this tall front wheel does not exist, this fighter will stop being Shinden.

Japanese is here.

Posted in 3D, J7W1 Shinden | Tagged: , , , , , , , , , , , , | Leave a Comment »

The days are asking itself

Posted by kikakuya on November 25, 2007


shinden.gifFor these three months, I have searched for the information on Shinden . The reason is that I like an airplane. I have also understood the essence which conceived this fighter 70 years ago. Why does people turn so many eyes to the fighter of a phantom who hid beauty and sadness? This is also the question to myself. Since the misery of fighting became far far memory, it may be thinking so. We might have forgotten gratitude to being peace. “SHIN” of Shinden is one of the phenomena showing the universe in “EKI” . The meaning expresses “thunder.” “DEN” expresses “lightning”. Did Japanese of 70 years ago search for figure of the god of thunder from this beautiful fighter? Supposing they did so, what should we do now? That is the question for Shinden.

Posted in Distance, J7W1 Shinden | Tagged: , , , , , , , , , , , , | Leave a Comment »

One-Step Advance

Posted by kikakuya on November 25, 2007


During the search of photograph at the U.S. site, a very high-resolution photograph was discovered. Some new information about front wheel was obtained. The first one is about a “rim”. The central part of the rim had not dented. It was a convex. Instantly, the form of a rim was changed. It is one-step advance now.

side.gif side2.gifnoseg6.gif

Japanese is here.

Posted in 3D, J7W1 Shinden | Tagged: , , , , , , , , , , , , | Leave a Comment »

Tips in the Midnight

Posted by kikakuya on November 24, 2007


Tips about the nose gear frame was summarized that was omitted last time. Please refer to the following. Although explanation is Japanese, you can understand it easyly in a heading.

Lure Head Japan : http://zen.mydns.jp/~tokyo/lurehead/

section.gifpath.gifpathoshi.gif

prototype.giflowcomp.gifconvert.gif

fabricate.gifframekan.gif

framekan2.gif

Posted in J7W1 Shinden | Tagged: , , , , , , , , , , , , | Leave a Comment »

Further Searching

Posted by kikakuya on November 23, 2007


shinden1122.gif

We have not a good photograph with which a close-up of a front wheel was taken. Therefore,if the image of appearance suits,let’s make it O.K.. The another photograph cannot explain an important portion, although the nose gear is perfectly. The prediction of the contents of fabrication can be performed with getting the structure of this equipment. Let’s search unknown equipments again . The fabrication of upper leg is coming after the processing of the storing part.

noseg4.gifnoseg5.gif

noseg2.gif

(Expandable)

Japanese’s here.

Posted in J7W1 Shinden | Tagged: , , , , , , , , , , , , | Leave a Comment »

Making Shoes

Posted by kikakuya on November 23, 2007


The leg(lower part), the tire and the rim are created by “rotation processing” of a section. Since the U character type frame does not have the symmetry side (judgment from a photograph), the prototype is created by “extrusion of the path” of the section made from the ellipse. This frame is made manually. This work resembles edit of the polygon. Shoes were made now. In order to make this into boots,it is necessary to collect data more,isn’t it?

parts.gifframe1.gif

Japanese is here.

Posted in 3D, J7W1 Shinden | Tagged: , , , , , , , , , , , , | Leave a Comment »

Seasonal Change

Posted by kikakuya on November 23, 2007


The cold wind is coming although it is fine day. Two months passed away as making J7W1 Shinden after the hot season. Wintry cold wind already began to blow in my small town. In the Tohoku district in Japan, it already began to snow. Although Shinden had been making only from a photograph, easy drawing information and imagination, the season which begins to make details also came in my design seasoning. The first reproduction portion is a nose gear (front wheel). Even if the whole structure can be overlooked , the mechanism of a portion cannot become clear. This is well being. This front wheel is completely the same for my little information about airplane equipment. The installation method of the attachment portion looking as “hinge with an angle” (it named freely) and the upper structure of this equipment are not clear. That is above U character frame which has sandwiched the wheel. The structure cannot be solved only by my photograph and sketch which it has now. Although they would probably be buffer (shock absorber) , “hinge with an angle”and unknown equipment are written only as omitted drawing. Anyway,according to the above-mentioned various situations, let’s make that portion future work.

trace2.gifFirst of all,the portion which is visible exactly is traced. Let’s trace it now. And let’s fabricate them quickly! Since a photograph is not from the front,   the right size is well deduced from the side view.  And traces form data using illustrator.

Japanese is here.

Posted in J7W1 Shinden | Leave a Comment »

Fatal Click

Posted by kikakuya on November 20, 2007


garden1119.gifThe server of my home is the old Mac G4 that is already returning active service in my jobs.  While the notice of software update is also disregarded, he is the old friend who works under a desk diligently every day.  Only periodical security update is definite aim in his life.  Such a darling old friend was involved in the trouble today.  At 5:00 p.m., the notice of “Software update” from Apple came to the monitor only for a server. As usual, I removed the unnecessary update.  O.K. button was pushed.  In the case of Mac, the optimization of System is certainly performed in the second half of update. This optimization requires long time. However, today’s processing took time crazily. It is long time to the extent that roast beef can be cooked.   The cruel word appeared in the monitor of the next client which was checking e-mail.  “cannot find server” —Is it joke?  A machine does not tell a lie although  breaking down. That was update process error. Other computers on LAN were also the same condition. When I changed the network protocol of router into DHCP,  Internet became connectable by note PC.   It was also O.K. similarly from a server machine.  Apache also has no abnormalities.  MySQL also has no abnormalities.  PhpMyAdmin also has no abnormalities. However, Internet was not available if DNS server was set up.  The cause of interruption was found at last.   That was DNS error.   The master zone of DNS service has been removed by updating process.   The inside of LAN and outside are not connected without  the master zone.   The old motto was remembered although the cause was not clear why DNS crashed by security update.     “Be prepared!  One click might be fatal” — to be sure, it is wise saying.          Japanese is here.

Posted in Trouble | Leave a Comment »

Preview Half

Posted by kikakuya on November 17, 2007


Only right wing was fabricated. This is a preview. That’s all this week.

wing1116.gif
The remaining molding operation is waiting for next week!!

Japanese is here.

Posted in 3D, J7W1 Shinden | Leave a Comment »

Being Fixed

Posted by kikakuya on November 17, 2007


mwing4.gifedge1.gif

Fabrication of the right wing portion finished. It has taken a whole day.

No, it has not finished yet in fact. It is only being fixed. A junction into a body still continues being an “acute angle” (portion of the black line). In the photograph, it is connected smoothly. Well, let’s make the correction homework. It must be required so much hours.

Japanese is here.

Posted in 3D, J7W1 Shinden | Leave a Comment »

The Patience

Posted by kikakuya on November 17, 2007


mwing1.gifAfter the mock-up is done, let’s insert it in between a body and a wing. The wing attached till yesterday is required to reduce by the overhang of a junction part. Since the wing has not been made into the polygon mesh yet, it can be shortened easily. Although we cannot cut the griddle instantly , resizing is the quick work of a CG no one but. The polygon of main wing will be making in the final stage, since it cannot predict what kind of correction occurs from now on. Well, let’s change the junction into a polygon and start fabrication instantly.

mwing2.gifThe method of a settlement that the curved surface concentrated to an engine cowling is peculiar to pusher type machine. Even if the degree of complexity of the mesh is set the lowest, it is quite tough work. The work which bends a polygon field little by little and is included into the body, looking at x-axis, y-axis, and z axis by turns. The work of this portion is the sheet metal store. Patience is required for this work. Don’t give up till it can be convinced to good polygon fabrication. It certainly leads a success. Japanese is here.

Posted in 3D, J7W1 Shinden | Leave a Comment »

Sheet metal work

Posted by kikakuya on November 17, 2007


mwinglib.gifmwskin.gif

The tough work is coming tonight. That is a designing of the junction part of a wing and a body. The junction is made with a complicated curved surface from three dimension. This molding operation is completely the same as the sheet metal work. The engineers of a factory might be doing same work in a wartime. Probably, there was no pressing machine for exclusive use for Shinden since it was a test machine. It is just handmade!! The sheet metal of a car — that’s it. It has taken the whole day only in right wing this time.
Some sections are required for a junction structure first. Although this is a process which is not in actual sheet metal work, it is a procedure indispensable for making a curved surface with a free hand. Looking at a photograph, change of the flow of a curved surface is checked from three directions x,y,z. Five sections are illustrated this time. The flow of the curved surface which goes to especially an engine cowling was a difficult portion. After the elaboration of a section finished, skin processing is required for “The sheet metal work”. Japanese is here.

Posted in 3D, J7W1 Shinden | Leave a Comment »

Elaboration

Posted by kikakuya on November 12, 2007


1111.giftengai1.gifThe re-rendering of the part for the junction of a canopy and a body was elaborated and carried out. Left-hand side is 3D model (color), and right-hand side is a photograph of those days(monochrome) The edge of mapping also became clearer than last time.

Posted in 3D, J7W1 Shinden | Leave a Comment »

Nobody’s in Cockpit

Posted by kikakuya on November 10, 2007


The canopy is completion. The form of the front part was improved. Superfluous flesh was cut sharply. If the piece of the edge of mapping is improved more, a feeling of a scale will increase more.

1110.gif

Japanese is here.

Posted in 3D, J7W1 Shinden | Leave a Comment »

Verification

Posted by kikakuya on November 8, 2007


canopy3d_us.gifThe face was completed at last. The canopy of Shinden was put on the body. The correcting point becomes clear if it is compared with the photograph of the genuine. What is omitted and what to carry out is checked. The glass side of the front part needs to delete the side more (portion which has shone with lighting). It seems that the thickness of the frame is different. And also angle of gradient is a little different. With the photograph (below), although it seems that glass is not contained, it is exactly contained in the photograph of the Smithsonian. The color of glass also needs to be thought over again (colorlessness is used this time). Since strict size of this frame is unknown, the size has been decided in the balance of the image which comes from the trace and the photograph. This will also be necessary to reexamine together with the other portion which is not expressed this time.
canopyrl_us1.gif

The rendering was tried and carried out by the almost same angle as the real photograph. In the 3D, the junction to the body is not settled well too. It is also the cause that data is breaking a little. New body may be necessary to make(a broken texture data is coming out here and there). After making the canopy exactly, it might be good way to fabricate new body . Remaking object might often become beautiful rather than correction. Although you could notice in the photograph, semicircle-like equipment is attached to the rear ceiling. What is this? New homework was shown. Well, let’s change mode for a while till the body data renewing. Let’s challenge the modeling of a leg next time. It will become more interesting, since a feeling of the reality will come out.

Japanese is here.

Posted in J7W1 Shinden | Leave a Comment »

The Face

Posted by kikakuya on November 8, 2007


The front part canopy which serves as a face of J7W1 is fabricated this time. Mapping to an uneven surface of a sphere goes not so well, only the frame of this portion is modeling object. The frame of the same size as hind canopy is attached for the pilot side. The front tip frame which becomes a part for a junction with a body is created by the method of adjusting also for fine tuning. Along the curve for the body, a path of Bezier curves is required. Section of a frame is rotated according to Bezier curves. This method is called “Path Extrude”. This way is frequently used in 3D. The frame of a front glass portion is mapped to a glass side like other canopy. When three above-mentioned frames are processed concurrently, the canopy appropriate for J7W1 Shinden is completed.

Japanese is here.
zenwaku1.gifpassosi.gif

zenwakump.gif

zenall.gif

Posted in J7W1 Shinden | Leave a Comment »

Frame of Fate

Posted by kikakuya on November 8, 2007


frame1.gif 250px-north_am.jpg

Now, making fabrication of a window frame starts. “a window frame” is a window frame of canopy glass. I guess that the frame has disappeared at the time like the second half of P-51 mustang. It was just before the age of a jet. Since the fighter is a propeller plane, canopy can be opened by hand in case of emergency, and the pilot can begin to get out from cockpit. But if speed exceeds 700km/h, opening by hand is pretty difficult. It was the current of the time when the design concept of the airplane itself changed quickly with the end of the reciprocating engine fighter.

Shinden’s canopy was still a manual opening-and-closing type. Mapping is used for creation of a window frame. A developed view from a photograph and a drawing can be mapped for the surface (duplicated object) of each glass side which was created last time. Each shade was drawn by Illustrator. Since mapping of the curved surface of the front canopy seems to be pretty difficult, I map only the front frame.

frame2.gif

A stencil function is used in this mapping processing. The white and black of the picture of a frame are reversed in the stencil function. Portions other than a frame are made transparent by this processing. If this function is used, only a frame can be expressed at rendering. The notes about combining with glass is that the glass side is reducing slightly. By this processing, a glass side will be inside a frame. This is more real. If a rendering is carried out, canopy into which glass was built exactly will be completed.

Japanese is here.

Posted in 3D, J7W1 Shinden | Leave a Comment »

Subtract

Posted by kikakuya on November 7, 2007


nuki.gifIf the forming of canopy of the front part goes well to about 80%, the work for a glass will be able to start. Although I think that it had become bulletproof glass, since it was a wartime period,the quality of the material was not so good if it guesses from the situation of Japanese economy of those days. Since there is no glass data of those days,texture data is set the transparency “92%”, and the refractive index “1.4”. Although it is ordinary thin glass, appearance will be good. Inside is hollowed in order to make glass thickness. First, the reproducing of prototype is required. After that, you have to make size reduce only the part of glass thickness. The reduced duplicate prototype can be embedded into the original prototype. Finally, it can be hollowed by a Boolean operation (Subtract).

nukikanryo.gifnakausiro1.gif

After Boolean operation,the prototype will become a form of the skin of the watermelon who finished eating. Before making complicated correction, Boolean operation is required. By this operation, next work will become easy. Simultaneously, the center and the rear canopy will be set the same work. Molding operation is easier than a front. But, there are one notes. Since the center canopy is covered by the rear canopy when a canopy is opened, width differs from height a little. Although a strict size is unnecessary, the feeling of a scale model will be produced by a little prejudice.

Japanese is here.

Posted in 3D, J7W1 Shinden | Leave a Comment »

The First Difficulty

Posted by kikakuya on November 7, 2007


tengai_sumis.gifThe first difficulty is form creation of the front part of a canopy. The section for fabrication of front part refers to the photograph of Smithsonian. Each section is arranged perpendicularly applying the position relation from photograph of a drawing. After skin processing was performed, an approximation prototype is completed. Now, serious work comes next!! It is fight with many polygons on this prototype until the form to desire is made.

moto1.gifgenkei.gifThe optimal method of fabrication of an object with symmetrical and almost uniform curvature is the way of a section connecting. The optimal number of sheets of a section will be clear from the application of the triple-dividing method. First,the section which divides into three portion for the desired object is required. After that ,trial fabrication is required. If there is a distorted portion,dividing will be required more. A section is increased until the smooth surface as a prototype is obtained. It is not easily decided by one time. Much trial and error are needed.

Japanese is here.

Posted in 3D, J7W1 Shinden | Leave a Comment »