Japan International Birdman Rally 2020 is looking for participants!

Photo of flying human-powered aircraft over Lake Biwa. Link to the official twitter.

Photo of flying human-powered aircraft over Lake Biwa in Japan inter national Birdman Rally. This was posted by the JIBR official twitter.
Source: https://pbs.twimg.com/media/EDVVDK2UcAEVC4P?format=jpg&name=medium

Yomiuri Telecasting Corporation, which is governing body of Japan International Birdman Rally, announced that they are prepare to hold the 43rd Japan International Birdman Rally (JIBR) 2020. The 43rd JIBR will consist of “The Glider division” and “The Distance division by human-powered propeller aircraft”.

Additionally, Yomiuri Telecasting Corporation announced holding briefing sessions of the competition for persons wishing participate. The briefing sessions will be held at Yomiuri Telecasting Corporation in Osaka on 14 Dec., 2019, and at Convension Hall AP Hamamatsucho in Tokyo on 15 Dec., 2019. If you want to attend the sessions, you need to submit your information by 6 Dec.. The information should be include followings;

  1. The place (Osaka or Tokyo) for the session you want to attend
  2. Your team name
  3. Name of participants of the session (up to two members)
  4. Your street address
  5. Your contact information (mobile phone number is prefered)

You can send the information by a postcard, FAX, or E-mail. You will also need a rule book in the session. The rule book will be sold at 500 yen per a book in the places.

If you want more detail information, please visit the official JIBR website.

 

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YURI-I Human-Powered Helicopter “FINAL” limited-time special display on 21 – 23 Sep. 2019 !

YURI-I HPH will be displayed in a storehouse of “Gifu-Kakamigahara Air and Space Museum” on 21 – 23 Sep.2019. According to announcement from the museum, the HPH will be stored after the special display and no more display of the HPH will be planned. This monumental HPH will be displayed in percially assembled condition, which is assembled two roters and two arms of four them and center section of the airframe. As described in a previous post, the HPH was damaged in 19 years display before rebump construction of the museum. This damages became the HPH non-conforming the museum’s safety standard and was gave up to restore and re-exhibit by the museum. After decision of the museum, team “Active gals family” and other volantiers have reserched and restored the HPH. Finally, the HPH will be displayed again.

YURI-I HPH is the second succesful HPH and succecing the first independent hover without any assist in the world. On 7 Mar. 1994, the HPH set world longest 19.46 sec hover record certified by Japan Aeronautic Association. The restored configuration of the HPH is not the record flight configuration. It is as of the International Human-Powered Flight Symposium in Seattle in 1994. Major differences of its configuration from record flight in Japan are material of airframe and shape of roter tip. Original airframe was wooden was broken during additional attempt to beat the record. Prior to demonstration flight in Seattle, the airframe was improved with FRP instead of original wooden materials. In 1997, the HPH of Seattle flight configuration was donated to the museum.

Time table of special limited-time display

21 Sep.
1:00 : Brief presentation @ Theater room
1:30 : Lectuer “Aerodynamic design of YURI-I” by Yoshiaki SUWA @ Theater room
2:30 : Special display

22 and 23 Sep.
10:50 – 12:00/1:50 – 3:00 : Special display

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Results of Japan International Birdman Rally 2019

 

This article intends to show results of Japan International Birdman Rally (JIBR, “鳥人間コンテスト” in Japanese) 2019 in English because google translation can not work for results page of JIBR official website.

NOTE: Some team names are defined with only Japanese. So they were forcibly interpreted by author in following.

Glider category

Position Pilot Age Team Flight distance
[metre]
Day Remarks
1 Kesuke UCHIDA 22 Umeda Lab. 327.72 Day 2
2 Yuki NAGATA 22 Kyusyu University Birdman Team 317.57 Day 2
3 Hiroshi NISHIMURA 39 IWATANI Clean energy team 300.57 Day 2
4 Tatsuki YAMAGUCHI 28 Tonjo no kai with Flight Works 238.77 Day 2 Jury’s special award
5 Yuzuha MATSUDA 20 Nihon university college of industrial technology
Tsudanuma Aeronautical Team
194.52 Day 2
6 Hiyori TATEZUMI 20 Sophia University
Team Flying Turkeys
152.51 Day 2
7 Tomoki YANAKA 19 Tokyo Metropolitan College of Industrial Technology
Team ЯTR
145.34 Day 1 THE BEST BIRDMAN award
Hikone mayor award
8 Kota SANO 20 Tokyo Metropolitan University
MaPPL
69.56 Day 1
9 Yutaka OSA 60 Team Old Guys who want to fly with flapping 38.70 Day 2
10 Yuriko IWAMOTO 20 Tokyo University of Science
Torica
20.66 Day 1
11 Yuka TAMON 28 Team YARUYARA 11.53 Day 2
12 Ikuo UDA 20 Moriguchi-Kadoma YEG × Setsunan University 11.40 Day 1 THE FRESH BIRDMAN award
13 Daiki MORITA 19 Soka University Birdman Club 8.84 Day 2
Takayuki TASHIRO 23 Toyota Technological Institute
SOLAE
NM Day 1
Kai SAITO 21 Osaka Sangyo University birdman project DQ Day 1 Disqualified by dropping of start supporting member.
Taku HATAKEYAMA 21 Shonan Institute of Technology
Cho-jin-kai (Birdman team)
DNS Day 1 Broken by typhoon’s strong wind during holding on the platform
Noriaki KUDOU 24 Flower’s factory DNS Day 1 Decline due to postponed by bad weather

 

HPA category
(HPA Distance category)

Flight order Pilot Age Team Flight distance
[metre]
Day Remarks
1 Yuta WATANABE 32 BIRDMAN HOUSE Iga 60,000.00 Day 2 Defending Champions
New record award
New record of the category
Longest distance limited by the current rule
2 Junya MORITA 21 Nihon university Aeronautical Students Group (NASG) 38,010.28 Day 2
3 Yuma NAKAMURA 20 Osaka Prefecture University
WindMill club
19,000.00 Day 2 Co-aixal mid-pusher propeller
He landed during turning at the first pylon.
4 Tatsuro SUZUKI 24 Team Altair 5,469.96 Day 2
5 Kazuki KOBAYASHI 21 Tohoku University
Windnauts
5,438.19 Day 2
6 Toshiki SAKAI 20 University of Tsukuba
Tsukuba Birdman Works
3,889.33 Day 2 Supporters award
7 Naoki TSUCHIDA 20 Tokyo Institute of Technology
Meister
2,225.17 Day 2
8 Suhail Manami 21 Waseda University
Aeronautics & Space Association
WASA
451.79 Day 2
9 Moe TSUBOUCHI 20 Shizuoka university
Hiko-ki bu
272.14 Day 2
10 Keisuke KANAMORI 20 Ritsumeikan University
Aircraft Project Team – RAPT
254.53 Day 2
11 Katsumi MORIMOTO 21 Kyoto University
Birdman team ShootingStars
197.97 Day 2
Naoki SAKAMOTO 21 Tokyo Metropolitan University
T-MIT
Cancelled Day 1 Bad weather on day 1
Maki ITO 20 Tokai University
TUMPA (Tokai Univ. Man-Powered Aircraft)
Cancelled Day 1 Bad weather on day 1
Toshiya TAKAO 22 Osaka institute of technology human-powered aircraft project Cancelled Day 1 Bad weather on day 1
Kouya TAJIMA 20 Hokkaido University
NorthernWings
Cancelled Day 1 Bad weather on day 1

 

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Entry list of Japan International Birdman Rally 2019

Japan International Birdman Rally will hold in 27-28 July, 2019. Organized by YOMIURI TELECASTING CORPORATION. SOURCE: https://i2.wp.com/www.ytv.co.jp/birdman/sns.jpg

Japan International Birdman Rally will hold in 27-28 July, 2019. Organized by YOMIURI TELECASTING CORPORATION. SOURCE: http://www.ytv.co.jp/birdman/sns.jpg

The organizer of Japan International Birdman Rally (JIBR) 2019 announced entrants and their flight orders on each category, which are the distance of gliders and the distance of human-powered propeller aircrafts. 32 entrants will fly away in the competition. They are 17 gliders, and 15 distance of HPAs. Distance of HPA category is going to be separated two part as the first 4 entrants and remains. Flights of 4 entrants are going to perform in the first day and the others are going to perform in the second day as usual. Start time of those competitions has not been announced as of this post.

Glider category
(27 July)

The defending champion team Tsudanuma Aeronautical Team of Nihon university has a huge chance to take third consecutive win. Because the “undisputed king of birdman” team Mitaka Mobara did not apply to this year’s competition, because the team Mitaka Mobara has to repair their aircraft majorly damaged due to crash in the last year and they decieded restruction of their team. However consecutive wins is very difficult in this category. Consecutive winners have been just only two team for past 41 times competitions. Futhermore, it is difficult to gain their experiences for students team member because core members in most of students team has been renewed in every year. Their primary competitors  may be team MaPPL of Tokyo metoropolitan University and IWATANI Clean Energy Team, which acheived flight over 400 metre in the last year.

Flight order Pilot Age Team Times Remarks
1 Kota SANO 20 Tokyo Metropolitan University
MaPPL
24 Unofficial team best: 450.17metre (2018), but disqualified.
2 Yuriko IWAMOTO 20 Tokyo University of Science
Torica
13
3 Takayuki TASHIRO 23 Toyota Technological Institute
SOLAE
4
4 Kai SAITO 21 Osaka Sangyo University birdman project 2
5 Tomoki YANAKA 19 Tokyo Metropolitan College of Industrial Technology
Team ЯTR
17
6 Kesuke UCHIDA 22 Umeda Lab. 2
7 Ikuo UDA 20 Moriguchi-Kadoma YEG × Setsunan University 1
8 Taku HATAKEYAMA 21 Shonan Institute of Technology
Cho-jin-kai (Birdman team)
7
9 Yuki NAGATA 22 Kyusyu University Birdman Team 37 Low wing and asymmetry configuration
10 Itsuki YAMAGUCHI 28 Tonjo no kai with Flight Works 5
11 Yuka TAMON 28 Team YARUYARA 1
12 Hiyori TATEZUMI 20 Sophia University
Team Flying Turkeys
18
13 Daiki MORITA 19 Soka University Birdman Club 15
14 Noriaki KUDOU 24 Flower’s factory 2
15 Yutaka OSA 60 Team Old Guys who want to fly with flapping 6 Ornithopter
16 Hiroshi NISHIMURA 39 IWATANI Clean energy team 10 Team of the main sponsor campany
Team best: 431.31metre (2018)
17 Yuzuha MATSUDA 20 Nihon university college of industrial technology
Tsudanuma Aeronautical Team
15 Defending champion
Students’ record holder (446.42 metre(2018))

 

HPA category

As of this post, it has been rainy season and temperature has been below 30 deg C on most days of a week. If this condition of climate will continue and it will be not rainy and windy, this competition promises to be great. It may be possible to break competition record and to achieve 60 km flight, which is specified longest distance in rule of this competition.

Flight order Pilot Age Team Times Remarks
Day 1: 27 July
1 Naoki SAKAMOTO 21 Tokyo Metropolitan University
T-MIT
19 Belt drive system
2 Maki ITO 20 Tokai University
TUMPA (Tokai Univ. Man-Powered Aircraft)
29 Low wing configuration and direct drive system
3 Toshiya TAKAO 22 Osaka institute of technology human-powered aircraft project 15 Strut blasing wings and one blade propeller
4 Kouya TAJIMA 20 Hokkaido University
NorthernWings
7
Day 2: 28 July
5 Naoki TSUCHIDA 20 Tokyo Institute of Technology
Meister
22 Team best: 32,177.99 metre (2003)
6 Suhail Manami 21 Waseda University
Aeronautics & Space Association
WASA
29
7 Tatsuro SUZUKI 24 Team Altair 1
8 Keisuke KANAMORI 20 Ritsumeikan University
Aircraft Project Team – RAPT
14
9 Yuma NAKAMURA 20 Osaka Prefecture University
WindMill club
23 Co-aixal mid-pusher propeller
10 Katsumi MORIMOTO 21 Kyoto University
Birdman team ShootingStars
23 Tail pusher propeller
11 Kazuki KOBAYASHI 21 Tohoku University
Windnauts
20 Team best: 36,000.00 metre (2008)
12 Moe TSUBOUCHI 20 Shizuoka university
Hiko-ki bu
8 Low wing configuration
13 Junya MORITA 21 Nihon university Aeronautical Students Group (NASG) 38 Team best: 34,654.10 metre (2003)
14 Toshiki SAKAI 20 University of Tsukuba
Tsukuba Birdman Works
26
15 Yuta WATANABE 32 BIRDMAN HOUSE Iga 3 Defending champion
Record holder: 40,000.00 metre (2017)

 

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A monumental Japanese HPH has lost display place in a revamped museum.

This article try to inform a sad news for human-powered aircraft enthusiasts. On 24 Mar. 2018, a Japanese aerospace museum was revamped as “Gifu-Kakamigahara Air and Space Museum”. Before repair work, this museum had exhibited two remarkable HPAs. One of them is “YURI-I” human-powered helicopter, which is the world best HPH in 1990’s. Unfortunately you can not look the remarkable Japanese HPH in the revamped museum and may not look it again in future.

Kakamigahara city have been one of important bases for development of Japanese aerospace technology since beginning of 20 century. This museum is near the JASDF Gifu Airbase, which is the oldest exsiting airfield in Japan. This museum is just only one that have 2 field of exhibition, aeronautics and astronautics, in Japan. One of the most remarkable exhibitions is Kawasaki ki-61-II-Kai “Hien” a.k.a. “Tony” in Allied names used by imperial Japan Army in WW2. It is the only original airframe existing in Japan. The museum also have many unique Japanese experimental aircrafts such as a USB powered lift type STOL experimental aircraft. Therefore the museum is remarkable for Japanese aircraft funs.

The other remarkable HPA in the museum is a HPA “HYPER-CHick “KoToNo” Limited”, which achieved setting the first official Japanese female record under the FAI rule in 1992. This HPA had been restored and have been exhibited again since revamping the museum.

YURI-I’s monumental achievement may be bigger than the above HPA. YURI-I is the first successful HPH without any support of power and stability. This HPH achieved 19.46 seconds of hover duration and 20 cm hover height certified by Japan Aeronautic Association on 7 March 1994 and this record had not broken until 2012.  The HPH also achieved 24 seconds demonstration flight in 1994 International Human-Powered Flight Symposium in Seattle. The YURI-I’s Quad-roter configuration was taken over by more successful HPHs, University of Maryland Gamera series and AeroVelo Atlas, which competed AHS Sikorsky human-powered helicopter prize in 21 century. For human-powered helicopter,in other words, YURI-I is just like as the incredible “Gossammer Conder” in history of human-powered aeroplane.

However, according to a Japanese aviation magazine “Aireview”, acutually YURI-I had been disassembled in frame and 8 rotor blades and they have been left in not air-conditioned storehouse of the museum. It is said that the museum determined that the HPH had been damaged in display for 21 years and can not be exhibited again due to nonconforming with museum’s safety standard. The museum seems to have gave up restoring and re-exhibiting the HPH. Some volantiers planed to restore the HPH as of May 2018 but they have no plan of re-exhibision and the next storage place. Therefore it may be difficult for us to look the successful HPH again.

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Japan International Birdman Rally 2019 is looking for participants!

Photo of flying human-powered aircraft over Lake Biwa. Link to English version of TV program introduction of Japan International Birdman Rally in https://ytvcontents.com

Photo of flying human-powered aircraft over Lake Biwa in Japan inter national Birdman Rally. Link to English version of TV program introduction of Japan International Birdman Rally in https://ytvcontents.com
Source: https://ytvcontents.com/ytv/site/site-coverphoto-link-download!output.action?id=15&property=fileId&cacheMinutes=10

Yomiuri Telecasting Corporation, which is governing body of Japan International Birdman Rally, announced that they are prepare to hold the 42nd Japan International Birdman Rally (JIBR) 2019 in end of the next July. The 42nd JIBR will consist of “The Glider division” and “The Distance division by human-powered propeller aircraft”.

Additionally, Yomiuri Telecasting Corporation announced holding briefing sessions of the competition for persons wishing participate. The briefing sessions will be held at Yomiuri Telecasting Corporation in Osaka on 15 Dec., 2018, and at Convension Hall AP Hamamatsucho in Tokyo on 16 Dec., 2018. If you want to attend the sessions, you need to submit your information by 7 Dec.. The information should be include followings;

  1. The place (Osaka or Tokyo) for the session you want to attend
  2. Your team name
  3. Name of participants of the session (up to two members)
  4. Your street address
  5. Your contact information (mobile phone number is prefered)

You can send the information by a postcard, FAX, or E-mail. You will also need a rule book in the session. The rule book will sell at 500 yen per a book in the place.

If you want more detail information, please visit the official JIBR website.

 

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Overview of a winner in Japan International Birdman Rally 2018

Japan International Birdman Rally was broadcasted on 29 Augst 2018.

Japan International Birdman Rally was broadcasted on 29 August 2018.
Source: http://www.ytv.co.jp/birdman/sns.jpg

A TV program of 41th Japan International Birdman Rally (JIBR) 2018 (鳥人間コンテスト2018) was broadcasted on 29 Aug, 2018. Yomiuri telecasting corporation, who is organizer of the competition, unveiled results of the competition on their website after broadcasting the program. The TV program has been webcasted within Japan. However, unfortunately it can not be watched officially in other countries. So this article try to introduce you very brief overview of winner of the JIBR and cancelation of HPA category.

Glider category: Student’s team won consecutive by smash the team best!

Glider category is the oldest category in JIBR competitions. Machines used in this category can not have powered propellers. The participants try to fly with their own home-made light weight gliders from 10 metre height above water. The game record of the category is 501.38 meters (approx 548.32 yards) of flight distance.

Taking off of

Taking off of “Tsudanuma Aeronautical Team at Nihon university college of industrial technology”‘s glider, which is named “Gardenia”, piloted by Kento KUMAKURA, that is the winner of glider category in JIBR 2018.
Source: https://pbs.twimg.com/media/DlxAhNVU0AE0HzJ.jpg

Tsudanuma Aeronautical Team at Nihon university college of industrial technology and their pilot Kento KUMAKURA won the 1st prize with 446.42 metre (approx. 488.21 yards) flight distance in the glider category of this year. This flight distance is the 4th longest distance in this category and broke the team’s best 440.37 metre, which is the first 400 metre class fight by non-“Mitaka Mobara” team in the last year. Consecutive title of this category has been very difficult. In fact, teams which won consecutive during the past 41 years have been just only three teams, “TOA Birdman Club” which had been led by Mr. SASAKI current chief judge of JIBR, “Mitaka Mobara” a.k.a the undisputed king of birdman and this “Tsudanuma Aeronautical Team” the winner of this year. The former two cosecutive winning team won by same pilots. On the other hand, Tsudanuma Aeronautical Team won consecutively by each different pilots. It is said that experience is one of the most important factors in the JIBR glider category. It is difficult for students team to gain and keep experiences because members must exchange for their promotion and graduation. Therefore this consecutive wins is amazing achievement in JIBR history.

During competitions, surface of platform had been wet and extremely slippy condition here and there due to rain that fell last night. Most of birdman on that day suffered slippy platform as well as fickle wind reaching 5 m/s affected by a typhoon or a few sprinkle. The first and biggest victim is the first performer team MaPPL which students team at Tokyo Metropolitan University. They achieved incredible 450 metre flight but their flight were disqualified as invalid starting because their starting tail support member slipped on the platform and dropped into water in starting sequence. Most of following team did not succeed in start sequence by early release from support members or insufficient acceleration to avoid slipping on the platform.

If you have known JIBR, you may want to know a result of the undisputed king “Mitaka Mobara”. The team “Miataka Mobara” and their pilot Mr. OKI made 21.56 metre flight distance. It is indisputable that their flight was a complete failure. Their failure was led by the slippy platform again. A very high-speed approach run at which the team excel was too high risk in that condition. Their tail supporter slipped down shortly after beginning of their approach run. Their glider was not almost accelerated and was accidentally banked left by strong wind blown from right side. Mr. OKI tried to pull up but nothing had worked in that condition beyond physical limits of their glider. At last their glider with Mr. OKI dived straight into water.

The Tsudanuma Aeronautical Team and Mr. KUMAKURA was the last performers of the category as defending champion. It made decrease slippy points that they were the last performer. In addition to that, they attempted their flight in approx. 2 m/s a headwind from right side by good luck. Support member and Mr. KUMAKURA confirmed carefully slippy areas and tried taking fast approrch run. They succeed to make good upwind penetration with high airspeed. He held nose which wants to rise a couple of time, stabilized glide attitude around 2 metre altitude and then started to turn left gradually. It seemed to try to change heading downwind in order to decrease airspeed for improving glide ratio with keeping high ground speed. Their glider kept flying over water by paying its speed and altitude and finally splashed down silently at the point of 446.42 metre from the platform. Unfortunately cockpit hatches which are on bottom of its cockpit fairing was not closed during the flight, It gave some of excess drag to their glider and also took some altitude from their glider. It looked like 15 – 30 metre of their loss of distance at least. However their flight was almost opimal flight in that condition except failure of closing cockpit hatch.

Iwatani Clean Energy Team won the 2nd prize by remarkable 431.34 metre flight distance. The Iwatani team attempted to fly in stronger wind around 5 m/s from right side. They did not make fast approach run due to the slippy platform. It would  lead normally a failed flight. But the pilot kept calm. He made high AOA to take enough lift of strong wind. And He and their glider took ground speed by wind drifting with keeping small sink rate. Those actions may not intent to extend flight distance but his hard training as flier may lead him to do so. As results, their pilot Mr. YANO became third 400 metre class birdman or fourth birdman including MaPPL’s pilot Mr. ANDO disqualified. The Iwatani team took over first place and kept it until the Tsudanuma Aeronautical Team. As an aside, Iwatani is a main sponsor company of this JIBR and their prize money will be donated to a good cause instead of use by the team.

In this competition, most of the teams were not able to show their designed performance in these very difficult conditions. However their hard work to do their best in each limited condition gave us some interesting techniques. Especially it is remarkable that the three 400 metre class flights achieved in each different condition, tail wind, strong cross wind, and head wind. I wish more birdmans show their own best performances in the next JIBR.

Distance of human-powered propeller airplane category: Gust of typhoon “JONGDARI” broke birdman’s wings.

This category is the most famous category in JIBR. Machine used in this category have propeller driven by human power. Some HPAs in this category have high performance as well as Gossamer Albatross. In most of case, it is difficult to fly 30 km and more due to high temperature (approx. 30 deg C/ 86 deg F or higher) of Japanese summer. The game record of this category is 40 km (approx. 24.85 mi), which was longest distance specified by JIBR rule as of 2017. The achievement of longest flight in the previous competition caused to revise the rules. The specified longest distance has set 60 km (approx. 37.28 mi). In order to achieve the longest 60 km flight, the rule requires to around a specified triangle course.

As reported a previous article, this competition of the category was cancelled after 4 flights. According to an original plan, this category will be conducted in second day. However JIBR organizer moved up schedule and informed to each entrants that this category would be start shortly after glider category in the first day since the typhoon JONGDARI was coming close.

The first performer was team Windnauts ,which is students team at Tohoku university, known as one of the most competitive teams. A flight of the team was started smoothly as always. However gusts from their left hand made a little drift of the HPA at point of approx 2000 metre from platform and just after that, the right wing spar of the HPA was suddenly broken. Fortunately their HPA did not sudden crash into water but was forced an emergency landing on water. The next team was Nihon university Aeronautical Students Group, which is pioneer of Japanese HPA and also one of the most competitive teams. Wind had been clam about 2 m/s when their HPA was on the platform. But variation of wind speed got increase. After taking off their HPA, tips of the wings were blown individually. It evoked a feeling of anxiety. And the left wing spar was suddenly broken at the point nearer than attachments of a flying wire. The HPA crashed immediately into water.

When the fifth team was on the platform, wind became strong constantly. JIBR organizer decided to cancel this competition almost instantly whereas the organizer usually wants to continue a competition although it may rather dangerous condition. Many students birdman had to return a just normal human without flying their own HPA due to this cancelation. However they made a more sound decision without more serious risk. Finally 3 of 4 HPAs in this category were crashed due to wing spar breaking. The other crashed team was also regarded as competitive team because the team got 3rd place in 2015. In view of their past achievements, their HPAs would be not lack of safety in normal wind conditions and the crashes of competitive HPAs clearly showed strange wind condition. Those means that safety and meteorological determination of organizer and every team admit of improvement. I wish that JIBR and HPAs will be sanely developed more safety from these experiences of this year.

Like & Reference;

  • 大会の歴史 │鳥人間コンテスト │読売テレビ(Japanese) : HISTORY | Japan International Birdman Rally | YOMIURI TELECASTING CORPORATION(Official website)
  • 鳥人間コンテスト 出場チーム│読売テレビ(Japanese) : TEAMS | Japan International Birdman Rally | YOMIURI TELECASTING CORPORATION(Official website)
  • Tweet as following by Tsudanuma Aeronautical Team at Nihon university college of industrial technology official dated on 29 Aug. ,2018

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