1. Promethean Igniter
York Zhang Antonio Coria; Juha Nieminen; Harsh Patel
Summer 2016

2. Assumptions & Decisions
• Three iterations
• Complete combustion
• Frozen equilibrium
• Isothermal exhaust products upon entering main CC
• Pressure from main CC can be read by igniter PT
• Length is arbitrarily. Should meet at impingement
• Placement of PT and thermistor closer to end

3. Proof of Concept Objectives
• Achieve > 5s burn time
• Chamber pressure of 521 psi
• Combustion temp of 1850K
• Resusable w/ engine bi-propellants
• Measure CC pressure via pseudo
reading
• Modify for LOX/IPA
• m_total : 0.0962 kg/s
• O/F: 0.618
• d_chamber: 0.28”
• d_kero : 0.078”
• d_gox : 0.048”

4. Material of Choice: SS 303
• Easy of machinability
• Properties
• Yield Stress: 455 MPa
• Melting Point: 1455 C
• Readily available on campus

6. 1.7101.100
0.161 .195
A
A
0.050
0.500
0.219
SECTION A-
A
1/2" AN 2B
6 5 2 134
A
B
C
D
6 5 2 134
D
B
A
C
DRAWN
CHK'D
APPV'D
MFG
Q.A
UNLESS OTHERWISE
SPECIFIED: DIMENSIONS ARE
IN MILLIMETERS SURFACE
FINISH:
TOLERANCE
S: LINEAR:
ANGULAR:
FINISH
:
DEBURR
AND BREAK
SHARP
EDGES
NAME SIGNATUR
E
DAT
E
MATERIAL
:
DO NOT SCALE DRAWING REVISIO
N
TITL
E:
DWG NO.
SCALE:1:1 SHEET 1 OF
1
York_Igniter_1_3in_RHA4
SWEIGHT
:

8. A
A
2.220
1.111
0.560
0.048
1.038
1.103
1.300
1.708
1.511
0.078
0.556
SECTION A-
A
M14 x 1.25
6 5 34 2 1
A
B
C
D
6 5 2 134
D
B
A
C
DRAWN
CHK'D
APPV'D
MFG
Q.A
UNLESS OTHERWISE
SPECIFIED: DIMENSIONS ARE
INMILLIMETERS SURFACE
FINISH:
TOLERANCE
S: LINEAR:
ANGULAR:
FINISH
:
DEBURR
AND BREAK
SHARP
EDGES
NAME SIGNATUR
E
DAT
E
MATERIAL
:
DO NOT SCALE DRAWING REVISIO
N
TITL
E:
DWGNO.
SCALE:1:1 SHEET 1 OF
1
WEIGHT
:
York_Igniter_1_3inA4

9. Equipment
• Coil
• Sparkplug - Ronney
• DAQ (Raspberry Pi)
• Fluid lines
• Pressure transducer
• Thermistor or thermocouple – 1350 C
• Injector test stand

10. Igniter Sleeve
• SS 303 Hex Bolt
• Filled w/ grease
• Location

11. 0.500
A
A
1/2"AN 2A
0.650
0.360
2.300
SECTION A-
A
1/8"-13NPT-2A
6 5 234 1
A
B
C
D
6 5 2 134
D
B
A
C
DRAWN
CHK'D
APPV'D
MFG
Q.A
UNLESS OTHERWISE
SPECIFIED: DIMENSIONS ARE
INMILLIMETERS SURFACE
FINISH:
TOLERANCE
S: LINEAR:
ANGULAR:
FINISH
:
DEBURR
AND BREAK
SHARP
EDGES
NAME SIGNATUR
E
DAT
E
MATERIAL
:
DO NOT SCALE DRAWING REVISIO
N
TITL
E:
DWGNO.
SCALE:1:
1
SHEET 1 OF
1
A4
WEIGHT
:
Sleeve

12. Test Analysis
• Determine actual temperature
• Verify DAQ