Re: What?
Assuming this is accurate (http://aviation.stackexchange.com/questions/25084/what-is-the-force-exerted-by-the-catapult-on-aircraft-carriers):
Steam/power settings are adjusted for each a/c type and T/O weight.
The EMALS stores 484 MJ in four 121 MJ alternators spinning at 6400 rpm. It delivers up to 122 MJ over 91 m. That averages out to 300,000 lbf. EMALS more finely controls launch forces (Max Peak-to-Mean Tow Force Ratio = 1.05), allowing it to launch smaller a/c (eg, smaller UAVs) and delivering a smoother ride that reduces airframe fatigue.
Current steam catapults deliver up to 95 MJ over 94 m. Each shot consumes up to 614 kg of steam piped from the reactor (NB: not the primary coolant loop). That averages out to 230,000 lbf.
Accelerations average around 3 g's, peak around 4 g's.
Biting the hand that feeds IT
