Jupiter and one of its moons, viewed by the New Horizons spacecraft as it flies by on its way to Pluto. Photo credit: NASA.

WHAT ADL CAN DO:
Develop and test scale models to determine the effects of fuel slosh on spin-stabilized spacecraft and stages
Design and test tank baffles to suppress fuel-slosh effects
Provide a dedicated drop tower facility for microgravity experiments
Test and analyze propellant-migration induced instability for inertia ratios greater than unity (the wobble-amplification problem)

Applied Dynamics Laboratories
Portland, Oregon
(503) 502-0169
SYSTEMS TESTED BY ADL
Spacecraft/stages with multiple off-axis tanks
Stages with centerline tanks
Mono- and bi-propellant systems
Flexible propellant management devices (PMDs)
Large dynamic imbalances and migrating propellants
Tanks with flexible diaphragms

ADL's DATA ACQUISITION
Special high-bandwidth infrared telemetry system for drop-tower tests
Space-qualified infrared telemetry system which flew aboard the space shuttle as part of a mid-deck experiment
Infrared telemetry system used in free-flying experiments aboard NASA's KC-135 ("zero-gravity") airplane
Micro-computer-based data storage system used aboard free-flying, rocket-propelled models

REFERENCE PAPERS
Mercury Messenger: Discusses drop tests and baffle design conducted at ADL. For the complete paper, click here.
Deep Space One: Describes the modeling, analysis and testing of the diaphragm tanks done at ADL to determine the Deep Space One nutation time constant. For the complete paper, click here.
“Analysis of spacecraft nutation dynamics using the drop test method,” by Jon V. Harrison, Space Communications and Broadcasting 5 (1987) 265-280. For the complete article, click here: DropTestMethod.pdf. 
“Nutation Time Constant Determination of On-Axis Diaphragm Tanks on Spinner Spacecraft,” by Marco B. Quadrelli, Journal of Spacecraft and Rockets, Vol. 42, No. 3, May–June 2005. Presented as Paper 2003-0155 at the AAS/AIAA 13th Spacecraft Mechanics Meeting, Ponce, PR, 9–13 February 2003. Copyright 2004 American  Institute of Aeronautics and Astronautics.
“A Free-Fall Technique to Measure Nutation Divergence and Applications,” J. Harrison (consultant), S.C. Garg, N. Furumoto, Ford Aerospace and Communications Corp., Palo Alto, Calif.; AAS/AIAA Astrodynamics Specialist Conference, Lake Placid, NY, August 1983.
“Circular Constrained Particle Motion in Spinning and Coning Bodies,” D.L. Mingori, University of California, Los Angeles; and J. Harrison, Hughes Aircraft Co., El Segundo, Calif.; AIAA Journal, Vol. 12, No. 11, November 1974, pp. 1553-1558.http://www.psi-pci.com/Technical_Paper_Library/AIAA2002-4139%20Messenger%20Prop.pdfhttp://trs-new.jpl.nasa.gov/dspace/bitstream/2014/6354/1/03-0161.pdfSERVICES_files/DropTestMethod.pdfshapeimage_3_link_0shapeimage_3_link_1shapeimage_3_link_2