Name Explanation Examples
U Primary trainer, Uchebnyj U-1, U-2, UPe-2
UAV Unmanned Aerial Vehicle [English]
UB Multipurpose machinegun by Berezin, Universal'ny Berezina UB
UBK Multipurpose machinegun by Berezin, free-firing (wing mounted) modification , Universal'ny Berezina Kryl'evoj UBK
UBS Multipurpose machinegun by Berezin, synchronized modification , Universal'ny Berezina Synkhronny UBS
UBT Multipurpose machinegun by Berezin, turret modification , Universal'ny Berezina Turel'nij UBT
UkrVozdukhPut' Ukrainian Society of Airways , Ukrainski Vosdukhni Put' , Established in 1923
UMA Naval Aviation Management , Uprevlenie Morskoj Aviatsii
UPAZ Aerial refueling gear , U****? P****? AviaZapravka ?
UPB Transitional trainer-bomber, intended for transition from primary trainer aircraft to the bomber. Also - crew trainer.
Uchebno-Perekhodnyj Bombardirovschik, учебно-переходной бомбардировщик УПБ
See KAI-1 N°3 UPB
USR Special Works Management , Uprevlenie SpetsRabot See BICh-17 project
UT Basic trainer, Uchebno-Trenirovochny UT-1, UT-2, UT-3 Pe-2UT
UTI Fighter Trainer, Uchebno-Trenirovochny Istrebitel UTI-4, UTI-26, La-15UTI
UTS Learning/Training Aircraft , Uchenbno-Trenirivochnyj Samolet (modern) See M-200 project
UVVF Management of the Military AirFleet, Upravlenie Voenno-Vozdushnogo Flota
UVVS Upravlenie Voenno-Vozdushnikh Sil, Military Air Force Management