F-35 versus Harrie

[PR19_Kit]

Having seen the B up close in STOL mode and on take off, I found it sounds much like a F/A-18 (decibel, and type of sound wise) on take off, and quieter than harrier on short landings. Would not call it horrific.  I have not seen it in true hover. 

Having watched (and heard...) the F-35B reproduce the 'Harrier Standard' hover, sideways flight and 'bow' at last year's RIAT I'd say it's a lot louder than a Harrier. It's also a higher frequency sound, presumably because of the re-heated main engine exhaust in the hover.

Um, it doesn't use the reheat in hover Kit

It's certainly loud enough for it though.

And why is everyone going about 'ground erosion' etc.

[kitnut617]

Having seen the B up close in STOL mode and on take off, I found it sounds much like a F/A-18 (decibel, and type of sound wise) on take off, and quieter than harrier on short landings. Would not call it horrific.  I have not seen it in true hover. 

Having watched (and heard...) the F-35B reproduce the 'Harrier Standard' hover, sideways flight and 'bow' at last year's RIAT I'd say it's a lot louder than a Harrier. It's also a higher frequency sound, presumably because of the re-heated main engine exhaust in the hover.

Um, it doesn't use the reheat in hover Kit

It's certainly loud enough for it though.

And why is everyone going about 'ground erosion' etc.

Reading about the engine, the hot exhaust puts out about 28,000 lb of thrust dry, 43,000 lb with reheat. The fan when engaged puts out about 20,000 lb of thrust and the roll puffers put out another 3,800 lbs.  So you can see that the F-35 has almost twice the thrust in the hover as a Harrier. The F-35 is almost twice as big and heavy as a Harrier.

[rickshaw]

I am unsure why the deck problem is a problem, really.  All that is required is a slightly elevated deck with a grid as it's basis - the hot air "blows through" and out the sides.   I seem to remember the US Navy was thinking about doing that for one of their many iterations of the VSTOL aircraft they designed before the F-35...   

That would make it difficult to walk on in stiletto heels...

"Any Seaman wearing Stilettos on the main deck is taking their own lives into their own hands!" - Captain to crew.     

[Old Wombat]

The generic term is "sailor" when referring to all ranks, unless, of course, you're implying that NCO's & Officers are exempt?