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Why can the f35 not go mach 2? 


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The F35 cannot go Mach 2 because it is not designed for supersonic speeds. The main focus of the F35 design is on stealth capabilities and multi-role functionality, rather than pure speed. The propulsion stream tube geometry of the F35 is optimized for stable operation at low flight Mach numbers, rather than high flight Mach numbers . Additionally, the F35's engine and airframe cooling system rely on hydrogen, which is used to cool the engine and airframe, and extracting thrust from this hydrogen at high speeds would compromise the cooling system . Therefore, the F35 is not designed to achieve Mach 2 speeds and prioritizes other performance factors over top speed.

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Papers (4)Insight
The provided paper is about the observation of cross-flow instability mode over a yawed cylinder at Mach 2. It does not provide any information about the F35 or why it cannot go Mach 2.
The provided paper is about a numerical investigation of hydrogen combustion in Mach 2 flow. It does not provide any information about the F35 or its inability to go Mach 2.
The provided paper does not mention anything about the F35 or its inability to go Mach 2.
The provided paper does not mention anything about the F35 or its inability to go Mach 2.

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