Weight and cost estimating relationships for heavy lift airshipsWeight and cost estimating relationships, including additional parameters that influence the cost and performance of heavy-lift airships (HLA), are discussed. Inputs to a closed loop computer program, consisting of useful load, forward speed, lift module positive or negative thrust, and rotors and propellers, are examined. Detail is given to the HLA cost and weight program (HLACW), which computes component weights, vehicle size, buoyancy lift, rotor and propellar thrust, and engine horse power. This program solves the problem of interrelating the different aerostat, rotors, engines and propeller sizes. Six sets of 'default parameters' are left for the operator to change during each computer run enabling slight data manipulation without altering the program.
Document ID
19790058370
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Gray, D. W. (Goodyear Aerospace Corp. Akron, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1979
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 79-1577
Meeting Information
Meeting: Lighter-Than-Air Systems Technology Conference