MacDonald, Dettwiler and Associates Ltd. is a Richmond, British Columbia global communications and information company. MDA has locations throughout Canada, and the United States operating under the MDA brand name.MDA's most visible products may be the Canadarm, Canadarm2 and Dextre remote manipulator systems used on NASA's Space Shuttle and International Space Station programs.MDA provides operational solutions to commercial and government organizations worldwide, including: Airborne Surveillance Solutions Satellite Ground station Maritime Information Systems Aviation Information Systems Geospatial information services, including Satellite Data Distribution, Value-Added Information Services and Intelligence Information Services Communications satellites Communications satellite payloads Communications satellite subsystems and related ground systems Commercial satellite hosted payload services Robotic surgery research via its NeuroArm development program Space robotics, satellite information and payload systems Radar and optical satellite imagery, and, remote sensingMDA is a member of the British Columbia Technology Industry Association. Wikipedia.
MacDonald, Dettwiler and Associates | Date: 2015-09-10
A steerable antenna configuration having all actuators and the feed source mounted on a stationary side of the antenna thereby eliminating the need of having to supply power and/or communication signal through, a rotation mechanism. A first actuator rotates a reflector assembly about a first axis, and a second actuator rotates at least a main reflector of the reflector assembly about a second axis perpendicular to the first axis. The second axis is rotatable about the first axis via the first actuator.
MacDonald, Dettwiler and Associates | Date: 2014-11-26
Herein is disclosed a propellant transfer system and method for refueling on-orbit spacecraft. The system and method are configured to allow for resupply of spacecraft configured to be fueled by either a bipropellant (oxidizer and fuel) or a monopropellant (typically hydrazine). The system and method are particularly suited for resupply of satellites not originally prepared for refueling as well but the system may also be used for as satellites specifically designed for refueling.
MacDonald, Dettwiler and Associates | Date: 2015-08-14
Herein is disclosed a tool, system and method for refueling on-orbit spacecraft. The tool and system are configured to allow for resupply of spacecraft configured to be propelled by either a bipropellant (oxidizer and fuel) or a monopropellant (typically hydrazine). The refueling tool is particularly suited for resupply of satellites not originally prepared for refueling but the system may also be used for satellites specifically designed for refueling.
MacDonald, Dettwiler and Associates | Date: 2015-05-04
The present invention provides a capture mechanism for capturing and locking onto the Marman flange located on the exterior surfaces of spacecraft/satellites. The capture mechanism achieves its goal of quickly capturing a client spacecraft by splitting the two basic actions involved into two separate mechanisms. One mechanism performs the quick grasp of the target while the other mechanism rigidises that grasp to ensure that the target is held as firmly as desired.
MacDonald, Dettwiler and Associates | Date: 2014-03-21
The present invention provides a low profile, compact, scalable concept end-effector for use in robotic handling applications. The end-effector acts as the interface between multi-degree-of-freedom (DOF) manipulator and its base (if applicable), as well as the tools it handles and is compatible with both large manipulator systems such as the Shuttle Remote Manipulator System (SRMS) and Space Station Remote Manipulator System (SSRMS) and smaller dexterous manipulators such as the Orbital Express Dexterous Manipulator System. An active/controlled component is attached to the roll joint(s) at one or both end(s) of the manipulator, with an entirely passive component attached to the structure/tools that the manipulator interfaces with. Interface engagement and mate operations are performed by way of the manipulator roll joint. Once mated, shear pins are extended to lock the mated assembly in place and achieve a high stiffness, zero free play mated interface.