YF, Y.F., or Yf can refer to:
Fictional vehicles:
* YF-19 Alpha One Excalibur, a spacecraft in the anime series ''
Macross
is a Japanese science fiction mecha anime media franchise/ media mix, created by Studio Nue (most prominently mecha designer, writer and producer Shōji Kawamori) and Artland in 1982. The franchise features a fictional history of Earth and th ...
''
* YF-21 Omega One, a spacecraft in the anime series ''
Macross
is a Japanese science fiction mecha anime media franchise/ media mix, created by Studio Nue (most prominently mecha designer, writer and producer Shōji Kawamori) and Artland in 1982. The franchise features a fictional history of Earth and th ...
''
Real vehicles:
* A series of American aircraft, including:
**
Lockheed YF-12
The Lockheed YF-12 was an American Mach 3+ capable, high-altitude interceptor prototype, developed and manufactured by American aerospace company Lockheed Corporation.
It was developed during the late 1950s and early 1960s as a potent ...
** YF-16, also known as
General Dynamics F-16 Fighting Falcon
**
Northrop YF-17
**
Lockheed YF-22
The Lockheed/Boeing/General Dynamics YF-22 is an American single-seat, twin-engine fighter aircraft technology demonstrator designed for the United States Air Force (USAF). The design was a finalist in the USAF's Advanced Tactical Fighter c ...
**
Northrop YF-23
The Northrop/McDonnell Douglas YF-23 is an American single-seat, twin-engine stealth fighter aircraft technology demonstrator designed for the United States Air Force (USAF). The design was a finalist in the USAF's Advanced Tactical Fighter ( ...
**
North American YF-93
The North American YF-93 was an American fighter development of the F-86 Sabre that emerged as a radically different variant that received its own designation. Two were built and flown before the project was eventually canceled.
Design and de ...
* A series of Chinese rocket engines, including:
**
YF-50t
The YF-77 is China's first cryogenic rocket engine developed for booster applications. It burns liquid hydrogen fuel and liquid oxygen oxidizer using a gas generator cycle. A pair of these engines powers the LM-5 core stage. Each engine can ind ...
**
YF-73
The YF-73 was China's first successful cryogenic liquid hydrogen fuel and liquid oxygen oxidizer gimballed engine. It was used on the Long March 3 H8 third stage, running on the simple gas generator
A gas generator is a device for generating ...
**
YF-75
The YF-75 is a liquid cryogenic rocket engine burning liquid hydrogen and liquid oxygen in a gas generator cycle. It is China's second generation of cryogenic propellant engine, after the YF-73, which it replaced. It is used in a dual engin ...
**
YF-77
The YF-77 is China's first cryogenic rocket engine developed for booster applications. It burns liquid hydrogen fuel and liquid oxygen oxidizer using a gas generator cycle. A pair of these engines powers the LM-5 core stage. Each engine can ind ...
**
YF-100
The YF-100 is a Chinese liquid rocket engine burning LOX and kerosene in an oxidizer-rich staged combustion cycle.
Development of the engine began in the 2000s, along with its sibling, the smaller YF-115, which would power the LM-6 and LM-7 ...
*
Yamaha YF 60, an all-terrain vehicle
* USS YF-116, a later name for the freight lighter
USS ''Fashion'' (ID-755)
Squadrons:
* YF, the MODEX code for Marine
Heavy Helicopter Squadron-462 (The Heavy Haulers, or its nickname "The Screw Crew")
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