ESDU ASTEROID Collection
The ASTEROID Collection
The ASTEROID Collection brings together various ESDU Data Items for the calculation of excrescence drag due to steps, ridges, grooves and cavities on the external surfaces of aircraft.
The methods given in the associated ESDU Data Items are presented in a single piece of software, the ASTEROID Drag Tool. See the 'Software' tab for full details.
This Collection contains:
Aircraft Surface Tolerances for Enhanced Repair, Operations and Design
Section 1: Introductory Data Items
An introduction to aircraft excrescence drag.
Excrescence drag levels on aircraft.
- ESDU 90029
Section 2: ESDU Methods included in ASTEROID
Drag due to a circular cavity in a plate with a turbulent boundary layer at subsonic, transonic and supersonic speeds
Drag due to grooves in a flat plate with a turbulent boundary layer, at subsonic and supersonic speeds
Drag of two-dimensional steps and ridges immersed in a turbulent boundary layer for Mach numbers up to 3.
- ESDU 74036
Section 3: Example Hand Calculation
Examples of excrescence drag prediction for typical wing components of a subsonic transport aircraft at the cruise condition.
- ESDU 93032
Section 4: Other relevant ESDU Methods
Drag of a rectangular planform cavity in a flat plate with a turbulent boundary layer for Mach numbers up to 3. Part II: Open and transitional flows.
Drag of rectangular planform cavity in a flat plate with a turbulent boundary layer for Mach numbers up to 3. Part I: Closed flow
VGK method for two-dimensional aerofoil sections. Part 4: estimation of excrescence drag at subsonic speeds.
- ESDU 00007
This Collection is complemented by the following software:
|Toolbox ASTEROID Run||
|Toolbox ASTEROID fp Run||