The Effect of variations in moments of inertia on spin and recovery characteristics of a single-engine low-wing monoplane with various tail arrangements including a twin tail /

Results of an investigation made in the Langley 15-foot free-spinning tunnel of the effects of variation of the moment of inertia of a research model representative of a present-day trainer or a four-place cabin monoplane are presented. Eight different wing arrangements and four different tail arrangements, including a twin tail, were tested. The moments of inertia about the three airplane axes were increased or decreased by a constant percentage and the results were compared. These results were also compared with results previously presented for variation of the airplane relative density.NACA TN No. 1575."May 1948."Includes bibliographical references.Results of an investigation made in the Langley 15-foot free-spinning tunnel of the effects of variation of the moment of inertia of a research model representative of a present-day trainer or a four-place cabin monoplane are presented. Eight different wing arrangements and four different tail arrangements, including a twin tail, were tested. The moments of inertia about the three airplane axes were increased or decreased by a constant percentage and the results were compared. These results were also compared with results previously presented for variation of the airplane relative density.Mode of access: Internet