Feasibility study of EVAL balloons

Yoshitaka Saito, Eiji Kamioka, Michihiko Toriumi, Yukihiko Matsuzaka, Michiyoshi Namiki, Naoki Izutsu, Shigco Ohta, Takamasa Yamagami, Jun Nishimura, Kiyoho Matsushima

Research output: Contribution to journalArticle

Abstract

For a new balloon material, we have been studying the properties of an EVAL (Ethylene-Vinyl-ALcohol) film during a part of few years. The EVAL film is a product of Kurare Plastic Company, and has mechanical properties similar to that of a Mylar film. Besides this strong mechanical strength, we found that the EVAL film has several characteristics which seems to be suitable for the balloon material. Those are: 1. Sandwiched EVAL films laminated by polyethylene films can be heat-scaled, 2. Gas leakage through the EVAL film is extremely low, and for Helium gas, it is almost 100 times less than that of a Mylar film, 3. The EVAL film is transparent in the optical band, while it efficiently absorbs the infrared radiation from the earth. In 1997, we have carried out a test flight from the Sanriku Balloon Center using a small balloon with a volume of 1000 m3. The balloon reached an altitude of 22 km successfully and showed a maximum burst pressure of 2.1 g/cm2. In this paper, basic properties of the EVAL film and performance of the test balloon arc described.

Original languageEnglish
Pages (from-to)1361-1364
Number of pages4
JournalAdvances in Space Research
Volume26
Issue number9
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

Balloons
balloons
feasibility study
butadiene
ethylene
alcohol
Ethylene
alcohols
Alcohols
Mylar (trademark)
flight tests
infrared radiation
Leakage (fluid)
Gases
gases
gas
helium
Strength of materials
leakage
Helium

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Saito, Y., Kamioka, E., Toriumi, M., Matsuzaka, Y., Namiki, M., Izutsu, N., ... Matsushima, K. (2000). Feasibility study of EVAL balloons. Advances in Space Research, 26(9), 1361-1364.

Feasibility study of EVAL balloons. / Saito, Yoshitaka; Kamioka, Eiji; Toriumi, Michihiko; Matsuzaka, Yukihiko; Namiki, Michiyoshi; Izutsu, Naoki; Ohta, Shigco; Yamagami, Takamasa; Nishimura, Jun; Matsushima, Kiyoho.

In: Advances in Space Research, Vol. 26, No. 9, 2000, p. 1361-1364.

Research output: Contribution to journalArticle

Saito, Y, Kamioka, E, Toriumi, M, Matsuzaka, Y, Namiki, M, Izutsu, N, Ohta, S, Yamagami, T, Nishimura, J & Matsushima, K 2000, 'Feasibility study of EVAL balloons', Advances in Space Research, vol. 26, no. 9, pp. 1361-1364.
Saito Y, Kamioka E, Toriumi M, Matsuzaka Y, Namiki M, Izutsu N et al. Feasibility study of EVAL balloons. Advances in Space Research. 2000;26(9):1361-1364.
Saito, Yoshitaka ; Kamioka, Eiji ; Toriumi, Michihiko ; Matsuzaka, Yukihiko ; Namiki, Michiyoshi ; Izutsu, Naoki ; Ohta, Shigco ; Yamagami, Takamasa ; Nishimura, Jun ; Matsushima, Kiyoho. / Feasibility study of EVAL balloons. In: Advances in Space Research. 2000 ; Vol. 26, No. 9. pp. 1361-1364.
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