Perf Problems part 1
Here is a few performance questions i am having problems with.
Many thanks,
PERF = Two identical turbojet aeroplanes (whose SFC is assumed to be the constant) are in a holding pattern at the same altitude. The mass of the first one is 95,000kg and it hourly fuel consumption is equal to 3100kg/h. Since the mass of the second one is 105,000kg, its hourly fuel consumption is:
a) 3787kg/hr
b) 3426kg/hr
c) 3259kg/hr <- answer
d) 3602kg/hr
PERF = Using climb performance chart for SE aeroplane (fig 2.3 SEP1), determine the ground distance to reach a height of 2000ft above reference zero in the following conditions:
Given:
OAT at takeoff = 25C
Airport pressure alt = 1000ft
A/C mass = 3600lbs
Speed = 100KIAS
Wind component = 15kts headwind
a) 18832ft
b) 18347ft <- answer
c) 21505ft
d) 24637ft
I have used the graph and come out with a climb gradient of 9.5% and ROC of 1125ft/min
Having problems from now on!
Many thanks,
Jinkster