Project Bellerophon0 Backup Slides
Project Bellerophon1 Trajectory - Steering Law Function of time Defines the orientation of the launch vehicle bb brbr 2e 3e 1e
Project Bellerophon2 Model Analysis 5,616 possible combinations for each payload …… Launch Vehicle Stage 1Stage 2Stage 3Launch Method MaterialPropellant Ground Aircraft Balloon Cryogenic Storable Hybrid Solid Aluminum Steel Titanium
Project Bellerophon3 Historical Catastrophic Risk Pegasus Our Vehicles
Project Bellerophon4 Aircraft Steering Law – Parameter Optimization tb2 25% tb2 Ψ mid1 =5 deg Ψ mid2 =0 deg Ψ e2 To be optimized t climb 1st Stage: tangent law 2nd Stage: 3 linear sections
Project Bellerophon5 Definition of Eccentricity e = c/a a: Semi-Major Axis b: Semi-Minor Axis c: center to focus
Project Bellerophon6 Risk Assessment - Non-Catastrophic Failure Monte Carlo Histograms - 200g Payload 200g Periapsis Altitude Histogram; std = km, mean = km 200g Eccentricity Histogram; std = , mean = 0.438
Project Bellerophon7 Risk Assessment - Non-Catastrophic Failure Monte Carlo Histograms - 1kg Payload 1kg Periapsis Altitude Histogram; std = km, mean = km 1kg Eccentricity Histogram; std = , mean =
Project Bellerophon8 Risk Assessment - Non-Catastrophic Failure Monte Carlo Histograms - 5kg Payload 5kg Periapsis Altitude Histogram; std = km, mean = km 5kg Eccentricity Histogram; std = 0.050, mean = 0.445
Project Bellerophon9 Performance Characteristics g Payload
Project Bellerophon10 Performance Characteristics - 1 kg Payload
Project Bellerophon11 Performance Characteristics - 5 kg Payload
Project Bellerophon g Failure
Project Bellerophon13 1 kg Failure
Project Bellerophon14 John Tsohas’ Table 200 g Payload Stage m prop /(m i +m prop ) V/stage m stage /GLOMIsp 180.7%3,808 m/s (32%)70.11%352.2s %4,358 m/s (37%)27.87%309.3s %3,740 m/s (31%)2.02%309.3s 1 kg Payload %3,818 m/s (39%)70.48%352.2s 274.3%3,211 m/s (32%)25.97%309.3s 372.7%2,864 m/s (29%)3.55%309.3s 5 kg Payload 183%3,211 m/s (32%)78.95%352.2s % 3,963 m/s (39%)20.2%309.3s %2,978 m/s (29%)0.85%309.3s Saturn V Stagem prop /(m i +m prop ) V/stage m stage /GLOMIsp %75.83% s %16.28%421s %7.89%421s Ariane 5 ECA %71.81% s %24.00%434s %4.19%446s
Project Bellerophon15 John Tsohas’ Table II Payload Prop mass fraction – 3 rd stagePayload mass fractionPayload mass fraction (3rd Stage) 200 g %0.38% 1 kg %1.64% 5 kg %9.35% VehicleProp mass fraction – 3 rd stagePayload mass fractionPayload mass fraction (3rd Stage) Saturn V %49.6% Ariane %1.64%