coilwinder Posted March 4, 2013 Share Posted March 4, 2013 I was just wondering.. sometimes I forgot to activate the four internal fuel pumps lol. However, the left engine starts up fine, but not the right (causing me to realize the error). But - why do the left engine start at all, shouldn't that one also not start with the fuel pumps disengaged? Link to comment Share on other sites More sharing options...
Risk Posted March 4, 2013 Share Posted March 4, 2013 (edited) Last I checked both engines could be started without either fuel pump on. I not sure if the fuel pumps are modeled. In smaller aircraft the fuel system is gravity feed and the pumps are usually only needed as a backup on a hot day, but always turned on for startup, takeoff and landings. Edited March 4, 2013 by Risk Link to comment Share on other sites More sharing options...
Snoopy Posted March 4, 2013 Share Posted March 4, 2013 It's because of the DC fuel pump. It supplies fuel to the APU and the #1 engine if there is no pressure from the left tank boost pump. v303d Fighter Group Discord | Virtual 303d Fighter Group Website | v303rd Fighter Group Twitter Link to comment Share on other sites More sharing options...
Supersheep Posted March 4, 2013 Share Posted March 4, 2013 There is a thread where I had the fuel pumps explained to me (from another aircraft). Altitude/pressue is a factor here, too. ^^Edit: Trust paul before you trust me on this... Super- The PVC Pipe Joystick Stand How to thread Link to comment Share on other sites More sharing options...
coilwinder Posted March 6, 2013 Author Share Posted March 6, 2013 Ok, thanks for answering. Link to comment Share on other sites More sharing options...
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