PAYLOAD USER’S GUIDE

Recommendations

Info

Falcon User’s Guide Roll Gimbaled engines Nitrogen gas thrusters Coast attitude control Nitrogen gas thrusters Nitrogen gas thrusters (recovery only) Operations Shutdown process Commanded shutdown Commanded shutdown Stage separation system Pneumatically actuated separation mechanism N/A 2.3 Retention, Release and Separation Systems The first and second stages are mated by mechanical latches at three points between the top of the interstage and the base of the second-stage fuel tank. After the first-stage engine shut down, a highpressure helium circuit is used to release the latches via redundant actuators. The helium system also preloads three pneumatic pushers, which provide positive-force stage separation after latch release. For added reliability, a redundant center pusher attached to the first stage is designed to dramatically decrease the probability of re-contact between the stages following separation. The two halves of the fairing are fastened by mechanical latches along the fairing vertical seam. To deploy the fairing, a high-pressure helium circuit releases the latches, and four pneumatic pushers facilitate positive-force deployment of the two halves. The use of all-pneumatic separation systems provides a benign shock environment, allows acceptance and preflight testing of the actual separation system hardware, and minimizes debris created during the separation event. 2.4 Avionics, and Guidance, Navigation and Control Falcon avionics feature a three-string, fault-tolerant architecture that has been designed to human-rating requirements. Avionics include flight computers, Global Positioning System (GPS) receivers, inertial measurement units, SpaceX-designed and manufactured controllers for vehicle control (propulsion, valve, pressurization, separation and payload interfaces), a network backbone, S-band transmitters and a C-band transponder for range safety tracking. The S-band transmitters are used to transmit telemetry and video to the ground, from both the first and second stages, even after stage separation. Our launch vehicles are equipped with a flight termination system to limit the potential damage caused by a launch vehicle malfunction. The system terminates the flight of the vehicle either when commanded by the range mission flight control officer or automatically in the case of premature stage separation. 2.5 Coordinate Frame Falcon vehicles use a right-hand X-Y-Z coordinate frame centered 440.69 cm (173.5 in.) aft of the firststage radial engine gimbal, with +X aligned with the vehicle long axis and +Z opposite the transportererector strongback (Figure 2-2). X is the roll axis, Y is the pitch axis, and Z is the yaw axis. Additional coordinate frames may be defined with reference to the payload interface (Section 5.1.1) for specific missions. Revision 2 © 2015 Space Exploration Technologies Corp. All rights reserved. 12
Falcon User’s Guide Figure 2-2: Falcon vehicle coordinate frame Revision 2 © 2015 Space Exploration Technologies Corp. All rights reserved. 13
Page 1 and 2: October 21 st , 2015 Falcon 9 Launc
Page 3 and 4: Falcon User’s Guide 5.2 Electrica
Page 5 and 6: Falcon User’s Guide 1. INTRODUCTI
Page 7 and 8: Falcon User’s Guide Table 1-1: Fa
Page 9 and 10: Falcon User’s Guide The Falcon se
Page 11: Falcon User’s Guide Nine SpaceX M
Page 15 and 16: CG Height [cm] Falcon User’s Guid
Page 17 and 18: Falcon User’s Guide 3.8 Multiple
Page 19 and 20: Falcon User’s Guide Propellant co
Page 21 and 22: Axial Acceleration (g) Falcon User
Page 23 and 24: Acceleration (g) Falcon User’s Gu
Page 25 and 26: SPL (dB, Ref 20 uPa) Falcon User’
Page 27 and 28: Falcon User’s Guide 4.3.5 Radio F
Page 29 and 30: Falcon User’s Guide Frequency Ran
Page 31 and 32: Falcon User’s Guide Figure 4-10:
Page 33 and 34: Falcon User’s Guide Table 4-9: Sp
Page 35 and 36: Falcon User’s Guide Figure 5-1: F
Page 37 and 38: Falcon User’s Guide The fairing c
Page 39 and 40: Falcon User’s Guide 5.2.2 Falcon-
Page 41 and 42: Falcon User’s Guide 6. FACILITIES
Page 43 and 44: Falcon User’s Guide transfers bet
Page 45 and 46: Falcon User’s Guide 6.2.1.3 Avail
Page 47 and 48: Falcon User’s Guide Figure 6-8: H
Page 49 and 50: Falcon User’s Guide The mission m
Page 51 and 52: Falcon User’s Guide L-2 days Laun
Page 53 and 54: Falcon User’s Guide 8. OPERATIONS
Page 55 and 56: Falcon User’s Guide Figure 8-2: V
Page 57 and 58: Falcon User’s Guide Administrativ
Page 59 and 60: Falcon User’s Guide 8.5.2 Spacecr
Page 61 and 62: Falcon User’s Guide In the event
Page 63 and 64:
Falcon User’s Guide Table 8-3: Fa
Page 65 and 66:
Falcon User’s Guide 10. CONTACT I
Page 67 and 68:
Falcon User’s Guide 11.2 List of
Page 69:
Falcon User’s Guide SSO .........
show all

PAYLOAD USER’S GUIDE

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?