WAstronaut transfer van
WATHLETE
WCrawler-transporter
WDEPTHX
WEclipse Project
WMV Freedom Star
WHypervelocity Asteroid Intercept Vehicle
WKuiper Airborne Observatory
WMV Liberty Star
WLinear Aerospike SR-71 Experiment
WLunar Roving Vehicle
WNASA recovery ship
WNASA standard detonator
WOrbital Space Plane Program
WMV Retriever
WRockwell HiMAT
WSpindle (vehicle)