Accession Number:

AD0285079

Title:

DEVELOPMENT OF METHODS FOR PREDICTING V/STOL AIRCRAFT CHARACTERISTICS

Descriptive Note:

Corporate Author:

VEHICLE RESEARCH CORP PASADENA CALIF

Personal Author(s):

Report Date:

1961-12-31

Pagination or Media Count:

1.0

Abstract:

DESCRIPTORS Vertical take-off planes, Short take-off planes, Helicopters, Mathe matical analysis, Mathematical prediction, Convertible airplanes, Design, Operations re search, Air force operations, Military re quirements, Jet planes, Flight paths, Aerody namic configurations, Airframes, Load distri bution, Computers, Nomographs, Tables, Aerodynamics. The analyses of the previous Phase I AD-244 736 and Phase II AD-257 571 studies are extended and refined. The relationships among basic VSTOL performance parameters are brought into focus. Results are cast into an engineering form. A slide-rule type computer and a set of nomographs are furnished to simplify prediction of VSTOL aircraft characteristics. Propellerdriven VSTOL aircraft are analyzed in terms of trade-offs among basic performance parameters for a generalized mission profile. The attainment of high performance potential is dependent on the basic aerodynamic parameters governing the forward flight capabilities of conventional aircraft. For VSTOL aircraft the variable disc area parameter ratio of hovering disc area to forward flight disc area has a marked effect on performance potential. The slide-rule and nomographs encompass a wide range of basic parameters including variable disc area and are applicable to prop-driven VSTOL aircraft. The analytical methods are applied to an advanced VSTOL specification including growth potential as quantitatively determined in the analysis. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE