5.1 Additional Experience

5.1.1 Neutral Buoyancy Shuttle Space Suit Training and Experience

August 1991
NASA Marshall Space Flight Center - Neutral Buoyancy Simulator
Huntsville, AL
Introductory Space Suit Training - Space Suit Drag Profile Test Subject
Test subject in a study exploring the drag properties of a space suit in the neutral buoyancy environment. The suit was fitted with a 3-D acoustical positioning system, and its motion was recorded as the suit responded to various applied linear forces.


Space Suit Drag Profile Testing at the Marshall Space Flight Center Neutral Buoyancy Simulator

September 1996
NASA Marshall Space Flight Center - Neutral Buoyancy Simulator
Huntsville, AL
Test Subject for Joint Angle Muscular Signature (JAMS) Data Collection
The Joint Angle/Muscle Signature (JAMS) system is a sensor system that fits inside of a spacesuit and measures the angles of the joints of the hand and the electrical activity of the muscles of the forearm. Its primary purpose is to measure muscle fatigue during EVA excursions. The left side of Figure 5-10 shows the JAMS hardware (in the vest) during suiting up for the test. Electrodes were attached to the right forearm. The right side of Figure 5-10 shows the JAMS taskboard. The task being performed is a j-hook removal.


Figure 5-10 JAMS Testing at the Marshall Space Flight Center Neutral Buoyancy Simulator

5.1.2 Neutral Buoyancy Vehicle Pilot

June 1994 - Present
Served as primary Ranger NBV Pilot since the beginning of the Ranger program. Performed many complex flight operations under high pressure situations for data collection, operations testing, and live television broadcasts.
The vehicle is piloted by a pair of 3DOF hand controllers. One is used for translation, and the other for rotation. Some of the more notable flight operations accomplished included interaction with EVA subjects. In Figure 5-11 Ranger NBV had just finished extracting an ORU from the port side of the payload pay. The vehicle was piloted across the payload bay to meet with an EVA subject on the end of the RMS. The vehicle was piloted to rendezvous with the EVA subject, and the ORU was transferred to the EVA subject. This demonstrated the ability of a large (1700 lb.) free-flying robotic system to safely interact with an EVA subject during task operations.


Figure 5-11 Ranger NBV Free-flying Fluids Box ORU hand-off to EVA Subject on RMS

Figure 5-12 demonstrates the level of accuracy to which a free-flying robotic system may be piloted. Using an open loop flight control system, Ranger NBV was piloted to a satellite mockup which had several EVA handrails. The vehicle has an EVA handrail gripper as part of its standard end-effector set. This end effector requires a linear positioning accuracy of about ±1/4", and an angular positioning accuracy of about ±5° in order to be successfully engaged to the handrail. Using the boresight camera view, along with an orthogonal SCAMP view, the vehicle was successfully piloted to grasp the handrail.


Ranger NBV Free-flight to Grasp of EVA Handrail

5.1.3 Public Relations

Tour Guide
September 1990 - Present
Conducted hundreds of tours with people of various backgrounds such as heads of large corporations, kindergarten students, astronauts, and students from inner city high school programs. Attained a great level of comfort and proficient doing so, and have occasionally received a round of applause at the end of a tour. Has also occasional received blank stares.
Interaction with the Press
January 1992 - Present
Have performed scores of interviews (and some minor scientific news/acting roles) with various branches of the media. Experiences have ranged from many local newspapers interviews, national magazines (Aviation Week, Popular Mechanics, Popular Science, etc.), pre-recorded news footage (FOX, ABC, CBS, Local Cable News, the Discovery Channel, etc.), and live national coverage (A Fox Morning News broadcast, a one hour live NASA TV program, etc.).


5.1.4 Neutral Buoyancy SCUBA Diver

June 1991 - Present


Figure 5-13 Working with the Multimode Proximity Operations Device (MPOD) at the Marshall Space Flight Center Neutral Buoyancy Simulator

Under Construction