I accept the F-35 only has one main propulsion gas turbine but are you saying it does not have a second gas turbine engine?
The VSTOL F-35, like the other versions of same, has only one gas turbine engine. The aircraft has one engine.
The lift fan is driven by a driveshaft from the engine. The driveshaft is engaged or disengaged by a clutch. No, there's no clutch foot pedal required.
Here's a photo of the engine, driveshaft and lift fan. The lift fan and driveshaft are at the right side of the photo.
http://upload.wikimedia.org/wikipedi...ne_of_F-35.jpg
Hi Elmo,
I am not out to trick anyone and hopefully I am not being pedantic but as far as I am aware the F-35 has a second gas turbine which had (not past tense) had caused heat issue. It is the IPP or APU in old speak..
Again this is a question and not a statement of fact.