Editing Martin X-23 PRIME (section)

{{More sources|date=September 2024}}{{Short description|American experimental aircraft}}
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{{Infobox aircraft
 |name = X-23A PRIME
 |image = File:X23_PRIME.JPG
 |caption = Preserved X-23A PRIME at USAF Museum, Dayton, Ohio
 |type = Lifting body
 |national_origin = United States
 |manufacturer = [[Martin Marietta]]
 |designer =
 |first_flight = 21 December 1966
 |introduction =
 |retired = 19 April 1967
 |produced =
 |number_built = 3
 |status = Out of service
 |unit cost =
 |primary_user = [[United States Air Force]]
 |more_users =
 |developed_from =
 |variants = [[Martin Marietta X-24]]
}}

The '''Martin X-23A PRIME''' (Precision Reentry Including Maneuvering reEntry) (SV-5D) is a small [[lifting body|lifting-body]] [[re-entry vehicle]] tested by the [[United States Air Force]] in the mid-1960s. Unlike [[ASSET (spacecraft)|ASSET]], primarily used for structural and heating research, the X-23A PRIME was developed to study the effects of maneuvering during re-entry of [[Earth's atmosphere]], including cross-range maneuvers up to {{cvt|617|nmi|mi km|0}} from the [[Trajectory of a projectile|ballistic]] track.