PD Aerospace (Japanese: ＰＤエアロスペース株式会社, Hepburn: Pī Dī Earosupēsu Kabushiki-gaisha), often abbreviated PDAS, is a Japanese space tourism company based in Nagoya founded in 2007 by Shuji Ogawa. The "PD" in the company's name stands for "pulse detonation". PDAS is developing a suborbital spaceplane to carry two pilots and six passengers using a hybrid of jet and rocket power.