The pilot of the retractable-gear airplane reported that, during landing, at the "last second" he noticed that the landing gear was not extended. He applied full power to go around, but the airplane pitched down and impacted the runway. The airplane came to rest about 1000 ft down the runway.
The airplane sustained substantial damage to the fuselage.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.