The Airbag System / 1987

The Reliability of Six 9s,or 99.9999% - Founded on NASA Techniques and Constant Effort

The Airbag System / 1987

A Project in Search of Direction

A platform car carrying a test dummy begins moving, quickly reaching a speed of 30 miles (48 kilometers) per hour as a small crowd of staff people watch in eager anticipation. Then comes the moment, with a thunderous "Bang!" The onlookers could see the dummy sway in its seat; moreover, the impact was so great that even those standing at a distance could feel it.

A Project in Search of Direction

Japan's first driver-side airbag system. It was featured in the Legend.

"Okay," someone says, affecting a tone of confidence. "We must have done it right this time." However, that person's hopes are quickly shattered when it is found the dummy had plunged forward before the airbag inflated.

It was always the same: They could not seem to inflate the bag within the target space of time. Of course, that particular window was only a fraction of a second, 0.003 sec. to be exact. The development staff had already experienced this failure a great number of times. Every test started with the highest hopes, only to end in disappointment as the test staff realized they had not achieved the correct timing for inflation. However, no one had the luxury of feeling down about it. They knew that if they couldn't leap this hurdle, no one could.

The year was 1975, and Honda had just begun an independent development project for an airbag system. One day Motohiro Okada, manager of the project, handed a notebook to Kiyoshi Honda (no relation to Soichiro Honda), a member of the development team. "Read this information," Okada said. But the book was nearly empty, except for a single remark about a test procedure designed to measure the sound of a "bang"; the sound an airbag makes at the instant of inflation. Since they had no development partner to rely upon, the staff had to start by groping in the dark for any available clue.

It seemed the moment was right for Honda to develop an airbag system. Ever since a 1970 review by the United States Congress there had been ongoing debates as to whether the automakers should be required to equip their passenger cars with passive restraint systems. Such systems would have included passive seatbelts, airbags and other devices that don't require an intentional action by the user in order to be deployed. Ford and GM had already carried out fleet tests in 1972 and 1973, respectively, and it was simply no longer possible to sell cars to the consuming public while claiming to the authorities that safety was a hindrance to production and marketing.

Honda, in order to develop its own airbag system, had decided to employ the "concurrent implementation of heterogeneous projects." Specifically, two teams would be formed, competing against one another with independently contrived airbag mechanisms. In Honda's case, one was based on an outside-air induction system, while the other relied solely on a charge of gas. Although both types had cleared the first hurdle with sufficient amounts of inflation, the gas-only system was ultimately chosen due to its simpler mechanism.

According to the results of their crash tests, the team decided they had to increase the efficiency of gas blow-out. Therefore, the gas cylinder's pressure setting was increased to 400 barometric pressures. At that level, whatever knowledge they had would no longer apply. The staff had to think for themselves and try out each idea on their own.

"The creation of a new technology means there's no one else who has the information you want," said Kiyoshi. Honda. "We could consult experts in related fields, but to put all the pieces together in a complete system was another thing entirely."

The journey was an ongoing succession of obstacles. So, whenever the development staff hit a wall, they would go to experts in the field and learn from them. They would correct drawings, and often weld parts and work sheet metal themselves. Through these efforts, the crash speed gradually increased to 35 miles per hour. At the third evaluation meeting held in January 1979, the team finally succeeded in inflating the bag in time.

The Challenging Spirit of Honda

1990 - 1999
  1. The Birth of Twin Ring Motegi / 1997The Birth of Twin Ring Motegi / 1997
  2. Entry to Champ Car Racing / 1994Entry to Champ Car Racing / 1994
  3. Odyssey / 1994Odyssey / 1994
  4. Establishment of Honda Taiyo, Kibo-no-Sato Honda and Honda R&D Taiyo / 1992Establishment of Honda Taiyo, Kibo-no-Sato Honda and Honda R&D Taiyo / 1992
  5. Hosting Hosting "Orei-no-kai" / 1991
  6. The NSX / 1990The NSX / 1990
1980 - 1989
  1. The VTEC Engine / 1989The VTEC Engine / 1989
  2. Honda EV Plus: The Dream of an Electric Vehicle / 1988Honda EV Plus: The Dream of an Electric Vehicle / 1988
  3. An Automated Line for Painting and Coating / 1988An Automated Line for Painting and Coating / 1988
  4. Four-Wheel Steering System (4WS) / 1987Four-Wheel Steering System (4WS) / 1987
  5. The Airbag System / 1987The Airbag System / 1987
  6. The ZE Engine (GX110 / 140 / 240 / 270 / 340 Series) / 1983The ZE Engine (GX110 / 140 / 240 / 270 / 340 Series) / 1983
  7. Formula One Entry / 1983Formula One Entry / 1983
  8. Development of Honda's Franz System Car / 1982Development of Honda's Franz System Car / 1982
  9. The World's Smallest Welding Line / 1982The World's Smallest Welding Line / 1982
  10. Transfer Lines for Modular Components / 1981Transfer Lines for Modular Components / 1981
  11. The Car Navigation System / 1981The Car Navigation System / 1981
  12. City / 1981City / 1981
  13. The F200 The F200 "Komame" Mini-Tiller / 1980
  14. Establishing Honda of America Manufacturing / 1980Establishing Honda of America Manufacturing / 1980
1970 - 1979
  1. The Oval Piston Engine / 1979The Oval Piston Engine / 1979
  2. Returning to the World Motorcycle Grand Prix / 1979Returning to the World Motorcycle Grand Prix / 1979
  3. The HR21 Lawn Mower / 1978The HR21 Lawn Mower / 1978
  4. Creating Hometown Forests / 1977Creating Hometown Forests / 1977
  5. The ME Engine (G100 / 150 / 200 / 300 / 400 Series) / 1977The ME Engine (G100 / 150 / 200 / 300 / 400 Series) / 1977
  6. Introducing the Accord / 1976Introducing the Accord / 1976
  7. CG125 / 1975CG125 / 1975
  8. Establishment of Honda Engineering / 1974Establishment of Honda Engineering / 1974
  9. Company Leaders Honda and Fujisawa Retire; Kawashima Assumes Presidency / 1973Company Leaders Honda and Fujisawa Retire; Kawashima Assumes Presidency / 1973
  10. Announcing the Civic / 1972Announcing the Civic / 1972
  11. Introducing the CVCC / 1972Introducing the CVCC / 1972
  12. Holding All Honda Idea Contests / 1970Holding All Honda Idea Contests / 1970
  13. Launching the Office of Safe Driving Promotional Operations / 1970Launching the Office of Safe Driving Promotional Operations / 1970
1960 - 1969
  1. The Dream CB750 FOUR / 1969The Dream CB750 FOUR / 1969
  2. Launching the Honda 1300 / 1968Launching the Honda 1300 / 1968
  3. The Hondamatic Transmission / 1968The Hondamatic Transmission / 1968
  4. Entering the Auto Market at Last / 1966Entering the Auto Market at Last / 1966
  5. The E300 Portable Generator / 1965The E300 Portable Generator / 1965
  6. Formula One Entry / 1964Formula One Entry / 1964
  7. Kyoto: Celebrating the Company's 15th Anniversary / 1963Kyoto: Celebrating the Company's 15th Anniversary / 1963
  8. Establishing Belgium Honda / 1963Establishing Belgium Honda / 1963
  9. Launching the S360 and T360 / 1962Launching the S360 and T360 / 1962
  10. Employing the Employing the "My Record" Project and Expert Certification / 1960
  11. The R&D Center Goes Independent / 1960The R&D Center Goes Independent / 1960
1950 - 1959
  1. Establishing American Honda Motor Co. / 1959Establishing American Honda Motor Co. / 1959

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