Electrics
What are the ways to get electrical power on the ground?
onboard APU
external power cart
one of the three engine-driven generators
What are the holding speeds for the KC-135
all gross weights above 170,000lbs : best endurance +10
all gross weights up to 170,000lbs : 200 KIAS
Where does take-off flare begin and end?
begins at unstick and ends when reaching climb-out speed at approximately 35 feet.
What is max motoring speed for N2?
less than 1% increase in N2 in 5 seconds
AC amps Max
116 volts
What does the DC loadmeter display?
Fraction of the load carried by source selected in units of tenths of full load capacity
In conditions worse than light icing, what minimum N1 setting is recommended?
70% N1 or greater ( turn on anti-ice and ignitors)
What is the minimum speed on takeoff climb for 15 degrees of bank with flaps up ?
Vco + 30
What are the initial fuel flow peaks?
300-680 pph before ignition and approximately 900 pph after ignition
High Spd boom ext. max speed
same as clean
When does the IDG Failure light come on and off?
ON: IDG cooler output temperature reaches 400 +/-10 degrees F or the oil px drops to 100 psi
OFF: oil cooler temp. decreases to 370 +/-10 degrees F or the oil px rises to 180psi
Enroute descents are based on what airspeed?
Mach 0.77 until passing 31,800 and then 280 KIAS
What is the worst engine to lose on takeoff? Why?
Outboard upwind. Outboard because of the longer moment arm, upwind because any rudder used to compensate for crosswinds reduces available rudder control for an upwind engine loss.
When only battery power is used during engine starts, what will be inoperative? ... and when will they be available?
all engine oil pressure gauges and fuel flow gauges will be inoperative until a generator comes on line and 28V AC power is available
AC volts normal range
190-210
The Bus Power Contro Unit (BPCU)
Speed brakes shall not be used any time below what altitude?
1000 AGL
When does the FMAC advance out of the takeoff logic mode?
when does the starter initiate automatic cutout and how long does it take?
between 43%-45% N2. It takes 3-9 seconds to complete the cutout sequence
Cooling After 1st motor
10 minutes
TR buses
Switched DC bus
Battery Bus
stopping distance is critical
RCR is 9 or less or
when threshold speed is increased more than 20 kts for gusts
What 4 things should the crew monitor on takeoff?
(SAFE)
Stab trim
Airspeed indicators
Fire/overheat warning lights
Engine Instruments
63% N2
Cooling time between starts
60 seconds