Let us consider single homopolymer chains in the good solvent regime. Of the interactions, we will leave only the excluded volume -strong repulsion when monomer units overlap; the modeling details are given below in the methods section. In this regime, a chain of length N is in the form of a swollen coil with a scaling size, which we will traditionally describe using the radius of gyration Rg, Rg ~N3/5 . Now, the question is -how polymer conformation would be affected by the introduction of self-propulsion to every monomer unit independently, given that equations of motion include both translational and rotational inertia. Thus, we consider a chain of active brownian particles in an underdamped regime with m -mass of the particles and J -moment of inertia (for details see Methods).