Accession Number:

AD0832659

Title:

DYNAMIC CHARACTERISTICS OF BLOCKED CONCENTRIC CASCADED PNEUMATIC TRANSMISSION LINES.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

• Miller, Richard Neal

Report Date:

1968-03-01

Pagination or Media Count:

201.0

Abstract:

A transfer function based on the electric-pneumatic analog theory for small signals is developed for blocked, cylindrical, concentrically cascaded pneumatic transmission lines. Calculations using this transfer function closely compare with 1 experimental results for single 0.170-in. ID lines of several lengths 20 feet and less at mean pressures of 10, 25, and 40 psig and 2 experimental results for a 30.987-in. long, 0.170-in. ID line connected in cascade with a 1.593-in. ID line of several short lengths 7.394 in. and less. The results clearly show that the chamber of a cylindrical-volume-terminated line acts as a second line connected in cascade with the first. The accuracy of the electrical analog transfer function is compared with the accuracy of transfer functions obtained from other models, and a simplified method of calculating the electrical analog transmission line characteristics is presented. Author

Descriptors:

• *PNEUMATIC EQUIPMENT
• TRANSMISSION LINES
• TRANSFER FUNCTIONS
• COMPUTER PROGRAMS
• ACOUSTIC IMPEDANCE
• FLUID MECHANICS
• CASCADE STRUCTURES
• EXPERIMENTAL DATA
• PRESSURE
• CORRELATION TECHNIQUES
• THESES
• ANALOG SYSTEMS

Subject Categories:

• Electrical and Electronic Equipment
• Statistics and Probability
• Hydraulic and Pneumatic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE