Author Topic: Rolls-Royce LiftSystem  (Read 164 times)

Offline kengeorge

  • Newly Joined - Welcome me!
Rolls-Royce LiftSystem
« on: December 08, 2019, 08:29:30 AM »
Hi to all the well informed members of this esteemed forum, perhaps you could answer two questions, what is the weight of the LiftFan used in the F-35's Integrated Lift Fan Propulsion System (ILFPS)? I have a diameter of 50inches (1.3m), and what is the overall height?

Thanks in advance
Ken

Offline GTX_Admin

  • Evil Administrator bent on taking over the Universe!
  • Administrator - Yep, I'm the one to blame for this place.
  • Whiffing Demi-God!
    • Beyond the Sprues
Re: Rolls-Royce LiftSystem
« Reply #1 on: December 09, 2019, 02:27:19 AM »
Supposedly 2700lb (~1225kg) - see here
All hail the God of Frustration!!!

Offline kengeorge

  • Newly Joined - Welcome me!
Re: Rolls-Royce LiftSystem
« Reply #2 on: December 10, 2019, 05:36:26 AM »
Thank you Greg, that's not only informative it's also proved to me that an idea I had isn't going to work.

Offline GTX_Admin

  • Evil Administrator bent on taking over the Universe!
  • Administrator - Yep, I'm the one to blame for this place.
  • Whiffing Demi-God!
    • Beyond the Sprues
Re: Rolls-Royce LiftSystem
« Reply #3 on: December 11, 2019, 01:09:52 AM »
The idea being?
All hail the God of Frustration!!!

Offline kengeorge

  • Newly Joined - Welcome me!
Re: Rolls-Royce LiftSystem
« Reply #4 on: December 11, 2019, 06:11:33 AM »
The idea for an Airship Aircraft carrier. in my whatif, the RN has bagged all the F-35B's for their carriers.
So what is left to use for an airborne carrier air wing? Re-build some Harrier's, that's what! I needed the dimensions and weight of the LiftFan to  fit in a bay behind the cockpit so it replaced the distilled water tank in the harrier so it could hover longer than the 90 seconds the tank allows, before the engine overtemps.
Now I know that's not a bright idea as harrier's would still need the water injection system regardless wether I stuff a LiftFan in or not. Plus adding little over a ton of deadweight isn't big or clever.
Instead I'll have a plan B and just increase the water tank size to enable my Airship bourne fighters to have a better margin of hover when they return to their flying carrier.

Offline Rickshaw

  • "Of course, I could be talking out of my hat"
Re: Rolls-Royce LiftSystem
« Reply #5 on: December 11, 2019, 10:11:47 AM »
The man you want to talk to is, Kit Speckman over at What-if.  He worked on building the machines that built the lift fans for the F-35.

Offline GTX_Admin

  • Evil Administrator bent on taking over the Universe!
  • Administrator - Yep, I'm the one to blame for this place.
  • Whiffing Demi-God!
    • Beyond the Sprues
Re: Rolls-Royce LiftSystem
« Reply #6 on: December 12, 2019, 02:19:09 AM »
Ah, ok.  I have long had the idea for taking two complete F-35B Lift systems (engine, lift fan, clutch, roll posts (well at least 1 set) and mounting them on a transport fuselage (maybe C-27J sized) - be that in a shoulder position or further ut on wings a bit - and making a high speed, VTOL platform.
All hail the God of Frustration!!!

Offline kitnut617

  • Measures the actual aircraft before modelling it...we have the photographic evidence.
  • I'd rather be dirtbike riding
Re: Rolls-Royce LiftSystem
« Reply #7 on: December 12, 2019, 03:10:25 AM »
The man you want to talk to is, Kit Speckman over at What-if.  He worked on building the machines that built the lift fans for the F-35.

Kit Spackman, aka PR19_Kit