This chapter examines the significant potential of the high-performance polymer that is emerging rapidly on several parts of the aerospace components. In this review articles, we begin with a brief overview of the high-performance polymers and the types of high-performance polymers used in aerospace applications. The various fabrication techniques that are involved in the development of HPPs and its composites through different methods are such as fused deposited model (FDM), stereolithography (SLA), selective laser sintering (SLS), and so on. The report further highlights on the portrayal of the various characterizations such as X-ray diffraction, scanning electron microscope, transmission electron microscope, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA) of the HPPs nanocomposites fabricated by different techniques. In addition, the high-performance polymers have brought about substantial revolution in many fields such as medical, automotive, aerospace, consumer product, and so on. Thus, this chapter helps the beginners, who can gain a comprehensive understanding of the fundamental principles of nanocomposite fabrication through additive manufacturing techniques.