Module for Automatic Dock and Detumble (MADD) (1973)

[Graham1973]

A small semi-automatic RPV designed to stabilize tumbling space vehicles designed by the Aerospace Engineering Department of Penn State University. A shame NASA didn't proceed with something like this, it could have proved real useful with Skylab...

The Module for Automatic Dock and Detumble (MADD) is an automated device for bringing a passive, tumbling space base under control in an orbital rescue situation. The conceptual design of-such a device reslulted from a consideration of tumbling motion analyses, and mission constraints. Specific topics of investigation include orbit and, attitude dynamics and detumble profiles. Position and attitude control systems for the various phases of operation were developed. Dynamic motion of a passive vehicle with MADD attached is considered as an example application and to determine control requirements. Since time is a critical factor in rescue operations, it is essential to execute the detumbling maneuver in a minimum of time. Optimization of the MADD thrusting, sequence has also been investigated. Results indicate the control torque must be directed opposite to the angular momentum vector for the assumptions used here.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19730014089_1973014089.pdf

 

[blackstar]

A small semi-automatic RPV designed to stabilize tumbling space vehicles designed by the Aerospace Engineering Department of Penn State University. A shame NASA didn't proceed with something like this, it could have proved real useful with Skylab...

I think it would have been irrelevant for Skylab. The biggest problem there was that shuttle was not ready and Skylab fell faster than planned, so there was no way a shuttle could get to it in time.