A Pulse Ejector Thrust Augmentor or PETA is a proprietary pulse jet engine developed by Boeing.[1] The Boeing PETA design embeds the pulse jet inside a thrust augmenting duct which entrains surrounding air into the exhaust stream. This entrained air improves thrust and cools the pulse jet. Boeing may use the PETA in its Light Aerial Multi-purpose Vehicle (LAMV) Future Combat System.[2]