Falcon 9 Launch Vehicle Payload User's Guide - SpaceX

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5.2.3.4. Sine‐Vibration Environment Falcon 9 User’s Guide SpaceX recommends deriving a payload‐specific sine vibration environment curve based upon a coupled loads analysis if significant flight history is not available. Actual spacecraft loads, accelerations, and displacements are a function of both the launch vehicle and payload structural dynamic properties and can only be accurately determined via a coupled loads analysis. The SpaceX approach for Falcon 9 is to use results from coupled loads analysis to derive a shock response spectrum on the vibration levels at the payload interface. For a given modal damping value, a smoothed envelope of peak responses is created that is used to produce a sine‐ vibration input curve. Sine‐Vibration Derivation Methodology: • Perform shock response spectrum (SRS) analysis on vibration levels at launch vehicle/spacecraft interface o Use measured historical data, if available o Use results from coupled loads analysis, if no measured data available o Requires analyst to assume damping (Q) • Divide peak response values at each frequency by Q • Determine a smoothed envelope of peak responses to produced sine‐vibration input curve • Minimize over‐testing by response limiting and notching input base motions o Limit peak acceleration and interface forces/moments using Coupled Loads Analysis CLA results o Limit critical component accelerations SpaceX can convert Craig‐Bampton and Data Recovery Matrices (DRM’s) from Metric to US Standard Inch‐Pound‐Second (IPS). SpaceX prefers to have the payload math models in IPS units, but can accept SI units. 5.2.3.5. Radio Frequency (RF) Environment Payload customers must ensure that spacecraft materials or components sensitive to an RF environment are compatible with both the launch pad environment and the RF environment during flight. The spacecraft RF characteristics should satisfy the limitations shown in Figure 5‐6. SCM 2008‐010 Rev. 1 Copyright ‐‐ SpaceX 2009 36
Function Table 5‐2 ‐ Falcon 9 Launch vehicle RF system characteristics Source 1 2 3 4 5 Command Destruct Radar Transponder Radar Transponder Stg 1 Launch Vehicle Telem Stg 2 Launch Vehicle Telem Rate Receive Transmit Receive Transmit Transmit Band UHF C‐Band C‐Band S‐Band S‐Band Frequency (MHz) 421 5765 5690 2221.5 2213.5 Power Output N/A 400W peak N/A 10W 20W Modulation Pulse Pulse PCM/FM PCM/FM Data Rate 2000 pps 3000 pps 1.8 Mbps 1.8 Mbps Function Source Falcon 9 User’s Guide 6 7 8 9 10 11 Stage 1 Launch Vehicle Video Stage 2 Launch Vehicle Video GPS L1 Recovery‐ Iridium Recovery‐ Iridium Telecommand Rate Transmit Transmit Receive Receive Transmit Receive Band S‐Band S‐Band L‐Band L‐Band L‐Band S‐Band Frequency (MHz) 2273.5 2251.5 1575.42 1610‐ 1625.5 1610‐ 1626.5 2038.265 Power Output 5W 10W N/A ‐ ‐ N/A Modulation FM/NTSC FM/NTSC BPSK/DSSS QPSK QPSK PM/PSK/PCM Data Rate NTSC NTSC 10 Mbps 2.4 kbps 2.4 kbps 2 kbps SCM 2008‐010 Rev. 1 Copyright ‐‐ SpaceX 2009 37
Page 1 and 2: Falcon 9 Launch Vehicle Payload Use
Page 3 and 4: Falcon 9 User’s Guide 5. General
Page 5 and 6: Falcon 9 User’s Guide Our design
Page 7 and 8: Falcon 9 User’s Guide rocket‐ g
Page 9 and 10: Falcon 9 User’s Guide crewed laun
Page 11 and 12: 2.2. Vehicle Axes/Attitude Definiti
Page 13 and 14: Figure 3‐3 ‐ Space Launch Compl
Page 15 and 16: Falcon 9 User’s Guide 3.3. Space
Page 17 and 18: Falcon 9 User’s Guide 3.5. Test F
Page 19 and 20: 4.1.1. Low Earth Orbit Payload Mass
Page 21 and 22: 4.1.3. Sun Synchronous Payload Mass
Page 23 and 24: 4.1.5. Geosynchronous Transfer Orbi
Page 25 and 26: 4.1.7. Geosynchronous Transfer Orbi
Page 27 and 28: Falcon 9 User’s Guide 4.2. Sample
Page 29 and 30: Falcon 9 User’s Guide 4.3. Mass P
Page 31 and 32: 5.1.3. Payload Separation Falcon 9
Page 33 and 34: AXIAL (G) -2, 3.5 -2, -1.5 -0.5, 6
Page 35: Figure 5‐4 ‐ Falcon 9 acoustic
Page 39 and 40: Freq (MHz) E Field Limit (dBμV/m)
Page 41 and 42: Falcon 9 User’s Guide propellant
Page 43 and 44: 5.3.2. Test Fittings and Fitcheck P
Page 45 and 46: Figure 5‐9 ‐ Spacecraft to Laun
Page 47 and 48: Falcon 9 User’s Guide encapsulati
Page 49 and 50: Launch Vehicle Ops Ground Ops Paylo
Page 51 and 52: Falcon 9 User’s Guide • Process
Page 53 and 54: Falcon 9 User’s Guide replaced wi
Page 55 and 56: 6.2. Spacecraft Transport to Launch
Page 57 and 58: Choice of 2 more consoles in these
Page 59 and 60: 6.3.1. Mission Integration Plan Tab
Page 61 and 62: 7. Safety 7.1. Safety Requirements
Page 63 and 64: Payload Information Payload Name/Ti
Page 65 and 66: Do you have a Spacecraft Separation
Page 67 and 68: 6. Please describe the RF systems t
Page 69 and 70: Falcon 9 User’s Guide 9.2. List o

Falcon 9 Launch Vehicle Payload User's Guide - SpaceX

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