STUDY OF PHYSICAL AND CHEMICAL CHARACTERISTICS OF BALLOONS AND BALLOON MATERIALS

Abstract

Studies of variations of balloon properties in aging were concluded. Room-temperature elongations as high as 1300% were obtained for a series of high-altitude, day-flight neoprene balloon compounds. These elongations were coupled with low-room-temperature modulus. Tests at -50C showed that those compounds having the highest room temperature elongations also had elongations generally superior to those normally obtained at -40C. Flights of 700 and 1000 gm balloons made from compound A3-138 were very satisfactory. Good rates of ascent were obtained with compound A3-106 balloons with a free lift of 2500 gms. The effect of pre-elongation on a day-flight compound, A3-105, and a dual-purpose compound, A3-106 was determined at -40 and -70C. Flights with thick-walled balloons having streamlined tails demonstrated the importance of tail length in developing fast ascent rates. Moduluselongation studies of balloon films are reported.

Document Details

Document Type
Technical Report
Publication Date
Apr 24, 1962
Accession Number
AD0277391

Entities

People

  • Eric E. Nelson
  • John Kantor

Tags

DTIC Thesaurus Topics

  • Altitude
  • Amorphous Materials
  • Biomedical And Dental Materials
  • Elastomers
  • Elongation
  • Films
  • High Altitude
  • Materials
  • Neoprene
  • Polymeric Films
  • Specialty Uses Of Chemicals
  • Synthetic Materials
  • Synthetic Rubber

Readers

  • Fault Tolerant Diagnosis of Black and White Balloon Isolation Tests Using ¥.
  • Mechanical Engineering/Mechanics of Materials.
  • Polymer Science and Engineering.