Is Flacon 9 block 5 considered a small lift launch vehicle?
I had a conversation with a guy who claims to work at a national defence avionics company in Washington, D.C. He stated that the Falcon 9 is a small-lift rocket—I'm not sure if he said this out of comparison to Starship or not. He argued that strict lift vehicle classifications do not exist and that the Falcon 9 being a small rocket is the general industry consensus.
This claim immediately piqued my interest as someone who has recently gained interest in rockets. A quick Google search told me that a small-lift launch vehicle is capable of lifting 2,000 kilograms (4,400 lb) or less by NASA's classification, or under 5,000 kilograms (11,000 lb) according to the Russian Roscosmos classification.
I understand there is no definitive regulatory categorisation for space activity in the U.S, but none of the classifications for small-lift vehicles is anywhere close to the Falcon 9's payload capacity. When I pointed this out, he got extremely defensive but remained completely committed to his claim. Therefore, giving him the benefit of the doubt, I searched further regarding this matter; I was able to find some webpages, including a Wikipedia page that explains the NASA launch vehicle classifications, but nothing seems properly official other than a footnote I found in a NASA document thanks to Google Gemini, called
'NASA’S LAUNCH SUPPORT AND INFRASTRUCTURE MODERNIZATION: COMMERCIAL SPACE LAUNCH ACTIVITIES AT KENNEDY SPACE CENTER' by the NASA Office of Inspector General Office of Audit, Report No. IG-15-003, released on October 23, 2014
Footnote 24 states
'A small-lift launch vehicle is capable of lifting up to 2 metric tons of payload into low Earth orbit (LEO). A medium-lift launch vehicle is capable of lifting between 2 and 20 metric tons of payload into LEO. A heavy-lift launch vehicle is capable of lifting between 20 and 50 metric tons of payload into LEO. A super-heavy lift vehicle is capable of lifting more than 50 metric tons of payload into LEO.'
I would love to be educated on this matter, whether his industry consensus claim is reasonable or if he is just having a bad day.
*Flacon* 🤣
Posted Jul 13, 2026, 10:28 AM UTC