1 min readJet Exit Rig (JER) BalanceNASAApr 27, 2016 Image Article Jet Exit Rig Balance: A flow-through force balance used to measure aerodynamic or propulsive forces/moments at NASA's Glenn Research Center. NASA Jet Exit Rig Balance: A flow-through force balance used to measure aerodynamic or propulsive forces/moments at NASA’s Glenn Research Center.