NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Prediction of forces and moments for flight vehicle control effectors. Part 2: An analysis of delta wing aerodynamic control effectiveness in ground effectMany types of hypersonic aircraft configurations are currently being studied for feasibility of future development. Since the control of the hypersonic configurations throughout the speed range has a major impact on acceptable designs, it must be considered in the conceptual design stage. Here, an investigation of the aerodynamic control effectiveness of highly swept delta planforms operating in ground effect is presented. A vortex-lattice computer program incorporating a free wake is developed as a tool to calculate aerodynamic stability and control derivatives. Data generated using this program are compared to experimental data and to data from other vortex-lattice programs. Results show that an elevon deflection produces greater increments in C sub L and C sub M in ground effect than the same deflection produces out of ground effect and that the free wake is indeed necessary for good predictions near the ground.
Document ID
19900012419
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Maughmer, Mark D.
(Pennsylvania State Univ. University Park, PA, United States)
Ozoroski, L.
(Pennsylvania State Univ. University Park, PA, United States)
Ozoroski, T.
(Pennsylvania State Univ. University Park, PA, United States)
Straussfogel, D.
(Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1990
Subject Category
Aerodynamics
Report/Patent Number
NASA-CR-186572
NAS 1.26:186572
Accession Number
90N21735
Funding Number(s)
CONTRACT_GRANT: NAG1-849
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available