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![PCosmologist Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::1510953191948570632.png) NMSI - Oscillating Physics [@PCosmologist](/creator/twitter/PCosmologist) on x 6023 followers
Created: 2025-07-14 14:06:01 UTC

Technical Specifications – X-37B (OTV)

SpecificationDetails:
Length8.9 meters (29 feet)
Wingspan4.6 meters (15 feet)
Height2.9 meters (9.5 feet)
Launch Mass~4,990 kg (11,000 lbs)
PropulsionHall-effect xenon ion thruster (electric propulsion system)
Operational Orbit300–800 km Low Earth Orbit (LEO)
Max Mission Duration908 days (current record for uncrewed orbital mission)
Launch VehiclesAtlas V (initial), now Falcon X (SpaceX)
ReusabilityYes – lands autonomously on runway like a space shuttle
Cargo BayEquipped with deployable bay doors (can carry payloads or experiments)
Primary PurposeTesting advanced military space tech, classified experiments, satellites
OperatorU.S. Space Force (originally U.S. Air Force Rapid Capabilities Office)
   Key Capabilities
Technology testing in extended orbital conditions (materials, electronics, avionics).
Deployment and repositioning of nanosatellites (potential offensive/defensive use).
Covert reconnaissance and intelligence roles (speculative but widely assumed).
Long-duration, low-consumption missions using electric propulsion.
High autonomy  launch, orbital operation, and runway landing without crew.




XXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1944760298830799323/c:line.svg)

**Related Topics**
[leo](/topic/leo)

[Post Link](https://x.com/PCosmologist/status/1944760298830799323)