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Piston Pressure and Massive Models:  Appendix A

Piston Pressure and Massive Models

Appendix A

 

Altitude Simulations with Nominal and Modified B6 Engines

 

Model 120

Engine

Altitude (Meters)

Altitude (Feet)

Altitude (Feet) and Optimal Delay (Seconds)

Altitude (Meters) at Optimal Delay

120

B6-2

18.57

60.94

63.38 at 1.61

19.32

120

B6-05-2

15.60

51.17

55.24 at 1.50

16.84

120

B6-10-2

12.94

42.44

48.31 at 1.40

14.72

120

B605-2

21.15

69.40

70.79 at 1.71

21.58

120

B610-2

24.15

79.22

79.76 at 1.82

24.31

120

B615-2

26.72

87.66

87.78 at 1.91

26.76

120

B620-2

29.59

97.09

97.10 at 2.02

29.60

120

B625-2

32.77

107.51

107.81 at 2.14

 32.86

120

B630-2

35.40

116.13

117.02 at 2.24

35.67

120

B635-2

38.72

127.05

129.07 at 2.36

39.34

120

B640-2

41.37

135.72

138.96 at 2.45

42.36

120

B645-2

44.48

145.92

150.95 at 2.56

46.01

120

B650-2

47.13

154.63

161.52 at 2.65

49.23

Model 60

Engine

Altitude (Meters)

Altitude (Feet)

Altitude (Feet) and Optimal Delay (Seconds)

Altitude (Meters) at Optimal Delay

60

B6-4

39.60

129.91

156.87 at 2.69

47.81

60

B6-05-4

32.38

106.22

139.61 at 2.54

42.55

60

B6-10-4

25.50

83.67

123.85 at 2.39

37.75

60

B605-4

46.27

151.81

173.57 at 2.83

52.90

60

B610-4

53.35

175.04

191.89 at 2.97

58.49

60

B615-4

59.29

194.52

207.77 at 3.09

63.33

60

B620-4

65.93

216.32

226.06 at 3.22

68.90

60

B625-4

73.23

240.24

246.70 at 3.37

75.19

60

B630-4

79.19

259.81

264.17 at 3.48

80.52

60

B635-4

86.65

284.29

286.61 at 3.62

87.36

60

B640-4

92.49

303.46

304.65 at 3.73

92.86

60

B645-4

99.28

325.72

326.07 at 3.85

99.39

60

B650-4

105.06

344.68

344.71 at 3.96

105.07

Model 30

Engine

Altitude (Meters)

Altitude (Feet)

Altitude (Feet) and Optimal Delay (Seconds)

Altitude (Meters) at Optimal Delay

30

B6-4

72.81

238.89

245.15 at 3.38

74.72

30

B6-05-4

64.50

211.60

221.40 at 3.22

67.48

30

B6-10-4

56.42

185.09

199.10 at 3.06

60.69

30

B605-4

80.68

264.71

268.43 at 3.52

81.82

30

B610-4

88.69

290.99

292.82 at 3.66

89.25

30

B615-4

95.32

312.72

313.49 at 3.78

95.55

30

B620-4

102.69

336.90

337.03 at 3.91

102.73

30

B625-4

110.66

363.05

363.09 at 4.05

110.67

30

B630-4

117.19

384.47

384.87 at 4.16

117.31

Model 0

Engine

Altitude (Meters)

Altitude (Feet)

Altitude (Feet) and Optimal Delay (Seconds)

Altitude (Meters) at Optimal Delay

0

B6-4

125.09

410.39

411.00 at 4.20

125.27

0

B6-05-4

116.22

381.31

381.39 at 4.07

116.25

0

B6-10-4

107.42

352.44

352.49 at 3.94

107.44

0

B605-4

133.69

438.60

440.13 at 4.31

134.15

0

B610-4

142.04

466.00

468.76 at 4.42

142.88

0

B615-4

148.82

488.27

492.25 at 4.50

150.04

0

B620-4

156.33

512.88

518.42 at 4.59

158.01

0

B625-4

164.27

538.94

546.42 at 4.68

166.55

0

B630-4

170.81

560.41

569.54 at 4.75

173.60

Altitudes simulated using Rocksim 5. 

 

Engine

Specific Impulse (Simulated) N-S

B6

4.4

B6-05

4.1718

B6-10

3.9546

B605

4.6312

B610

4.8584

B615

5.05

B620

5.267

B625

5.5113

B630

5.7105

B635

5.962

B640

6.1612

B645

6.396

B650

6.6003

 

 

Model

Mass at Liftoff to the nearest ½ Gram

0

66.0

30

98.0

60

125.5

120

191.5

 

 

Piston – Effective Travel

Mass to the nearest ½ Gram

9” – .203M

4.5

15” – .356M

8.0

30” - .737M

15.0

 

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