Configuration Studies Supporting Design/Assessment of Sensor Craft
Abstract
This report results from a contract tasking Nangia Aero Research Associates as follows: The objective of the proposed work is to support on-going research at the Configuration Aerodynamics Branch (AFRL/VA) for design/assessment of a Sensor Craft configuration. The sensor aircraft is subject to challenging flight envelope (mission profile). The design at present is relatively "fluid". Box wings of different layouts arise. It has to cruise and loiter (very high LID) for substantial periods and needs to carry a large percentage of its all-up-weight in fuel. The high aspect-ratio wings therefore need to be fairly thick. This implies emphasis on efficient aerodynamic and structural loading. A particularly critical aspect is the design of juncture and LE/TE design. Obviously there are many geometry parameters that arise implying substantial computation. It is proposed to commence work on this configuration. Suitable geometry parameters have been discussed with VA scientists. In the first phase with seed funding from EOARD, it is proposed to: 1. Set up the methodology of the design problem including flight envelope (Mach #. altitude & scale effects). Indicate important/critical design regimes. 2. Set up appropriate geometry with thick aerofoil sections including junctions. 3. Solve for design (under appropriate constraints) of the wings with mutual interference and allowance for juncture effects. 4. Two typical cases are to be done. showing the effects of main parametric variations. 5. Results will show the forces, moments and pressure distributions. Longitudinal behavior is the first interest. A restricted effort will be directed toward laterals also. 6. Compiling a report on the techniques used and results obtained with conclusions and suggestions for further work. 7. Draft report is to be sent for comments before issuing the final version, which is the main deliverable.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 21, 2003
- Accession Number
- ADA423911
Entities
People
- Rajendar K. Nangia