Accession Number:

ADA021904

Title:

A System for Inflating a Balloon Using Helium Stored in the Liquid Phase.

Descriptive Note:

Final scientific rept. 15 May 74-31 Aug 75,

Corporate Author:

NATIONAL BUREAU OF STANDARDS BOULDER COLO CRYOGENICS DIV

Personal Author(s):

• Sindt,C. F.
• Parrish,W. R.

Report Date:

1976-01-01

Pagination or Media Count:

39.0

Abstract:

This report covers the design and development of the prototype of a system to be used to fill a balloon that has been launched from an aircraft. The described system uses a hot packed bed heat exchanger to gasify 45.4 kg of liquid helium and warm the gas to 260 K for filling the balloon. The prototype system was successfully demonstrated on the ground by filling an ambient pressure balloon with 300 cum of helium gas at an average temperature of 260 K in six minutes and 45 seconds. Author

Descriptors:

• *BALLOONS
• *CRYOGENIC STORAGE DEVICES
• *INFLATING
• HEAT TRANSFER
• PROTOTYPES
• HEAT EXCHANGERS
• HELIUM
• AIR LAUNCHED
• BEDS(PROCESS ENGINEERING)
• LIQUEFIED GASES

Subject Categories:

• Lighter-than-air Aircraft
• Hydraulic and Pneumatic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE