Engine

Question 1

Engine Model

Answer 1

Pratt and Whitney

JT15D-4B

Question 2

Thrust Generated (per Engine)

Answer 2

2500 LBS

Question 3

Engine Bypass Ratio

Answer 3

2.7 : 1

Question 4

Maximum Fan N₁

Answer 4

106.0 %

Question 5

Maximum Turbine N₂

Answer 5

97.0 %

Question 6

Maximum Start ITT

Answer 6

700^o C (2 sec.)

Question 7

Maximum Continuous ITT

Answer 7

690^o C

Question 8

Idle ITT

Answer 8

580^o C (typical)

Question 9

Transient (acceleration) ITT

Answer 9

710^o C

Question 10

Maximum Temperature for Engine Start

Answer 10

ISA +39^o C

Question 11

Starter Limits

Answer 11

3 attempts in 30 minutes,

with 60 seconds rest between

Question 12

Battery Limits for Starting

Answer 12

3 starts per hour

Question 13

Minimum Oil Pressure

Answer 13

35 PSI (idle)

Question 14

Maximum Oil Pressure

Answer 14

85 PSIG

Question 15

Minimum Oil Temperature

Answer 15

-40^o C (starting and idle)

Question 16

Maximum Oil Temperature

Answer 16

121^o C

Question 17

Minimum Fuel Temperature for Takeoff

Answer 17

-40^o C (Jet A)

-54^o C (Jet B)

Question 18

Minimum Fuel Temperature for Start

Answer 18

-23^o C (Jet A)

-54^o C (Jet B)

Question 19

Minimum Battery Voltage

Answer 19

24V DC

Question 20

External Power Unit Limits

Answer 20

28V DC** (no load) / **Maximum 1000A output

Question 21

Minimum Ambient OAT for Battery Start

Answer 21

-18^o C