Prediction of Cruciform All-Movable Control Characteristics at Transonic Speeds.
Abstract
A study has been made of the feasibility of developing a transonic hinge-moment prediction method for cruciform all-movable controls by correlating an extensive data base using the equivalent angle of attack concept. Body vortex effects have been handled using a simplified vortex model. Existing data from the Army generalized missile have been studied to examine transonic nonlinearities including pitch-yaw coupling and fin-fin control interference. Data for an aspect ratio 3.53, taper ratio 0.06 canard fin have been successfully correlated on the basis of the equivalent angle-of-attack concept. Data for an aspect ratio 2 delta fin mounted aft on the triservice missile have also been studied for angle of attack to 20% for Mach numbers of 0.8 and 12. Methods of extending the range of applicability of a previous hinge-moment prediction method have been developed. Desirable future extensions have been pointed out.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1984
- Accession Number
- ADA147291
Entities
People
- F. K. Goodwin
- J. N. Nielsen
- M. F. E. Dillenius
Organizations
- Nielsen Engineering & Research (United States)