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PSC Proprietary 

2000781J MkII MLB Operating Procedure 

Page 1 of 50

 

 

  

 

 

2000781J MkII MLB Operating Procedure 

 

 

Only personnel directly trained and approved by PSC via 

3000224 MLB Training Record

 are authorized to 

operate a Lightband for any purpose. 

 

 

Organization Name 

 

MLB Diameter 

 

MLB Assembly Number & 

Revision 

 

MLB Serial Number 

 

Operation Purpose (TVAC, 

electrical verification, final 

integration, etc.) 

 

Location 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This procedure does not involve any high-energy 

liquids, solid fuels, or any material with inherently 

hazardous physical or chemical properties. 

Содержание 2000781J MkII MLB

Страница 1: ...LB Training Record are authorized to operate a Lightband for any purpose Organization Name MLB Diameter MLB Assembly Number Revision MLB Serial Number Operation Purpose TVAC electrical verification fi...

Страница 2: ...MECHANICAL ATTACHMENT PROCEDURE 15 8 STOWING THE LIGHTBAND 18 9 SETTING FOR FLIGHT THE LIGHTBAND 28 10 DEPLOYING THE LIGHTBAND 33 11 REMOVING THE LIGHTBAND FROM ADJOINING STRUCTURES 38 12 PREPARING TH...

Страница 3: ...igure 8 5 Updated 18 Step 8 2 3 Added detailed resistance measurement examples 19 Figure 8 6 Figure 8 7 Updated power source symbol 20 Step 8 2 8 Added 21 Step 8 2 14 Removed picture as allowable data...

Страница 4: ...orce LCT Lightband Compression Tool LV Launch vehicle MBA Motor Bracket Assembly a subassembly of the MLB Mk II Mark II a model designation of the Motorized Lightband MLB Motorized Lightband used inte...

Страница 5: ...o separable halves The Lower Ring contains the Hinged Leaves Retaining Ring Motor Bracket Assembly MBA and Separation Springs The Upper Ring smaller and lighter contains the accepting groove into whic...

Страница 6: ...PSC Proprietary 2000781J MkII MLB Operating Procedure Page 6 of 50 Figure 3 1 MLB15 000 24 stowed...

Страница 7: ...PSC Proprietary 2000781J MkII MLB Operating Procedure Page 7 of 50 Figure 3 2 MLB15 000 24 deployed also referred to as separated...

Страница 8: ...PSC Proprietary 2000781J MkII MLB Operating Procedure Page 8 of 50 Figure 3 3 Motor Bracket Assembly internal view Figure 3 4 Motor Bracket Assembly external view...

Страница 9: ...PSC Proprietary 2000781J MkII MLB Operating Procedure Page 9 of 50 Figure 3 5 Motor Bracket Assembly stowed Figure 3 6 Motor Bracket Assembly operations...

Страница 10: ...terface surfaces 1 Ability to verify flatness of adjoining structures Table 3 3 Preparing to stow section 8 1 Qty Item Make Model Typically Used by PSC AR Ability to compress Lightband payload1 weight...

Страница 11: ...tutoyo 500 175 30 1 Optional Telescoping gage to measure Lightband flange separation 1 3 to 2 1 inch range Starrett 229C AR 2 per Spring typ 4000637 Lightband Compression Tool 1 per LCT pair Nylon cab...

Страница 12: ...er every deployment A stow operation shall not be attempted without first inspecting the Lightband 8 Both motors shall always be powered when operating the Lightband 9 The Lightband shall only be stow...

Страница 13: ...crucial when rotating the Lower Ring See Figure 6 3 5 Do not touch the gear cover on the Motor Bracket Assembly See Figure 6 4 Upper Ring 1 Do not touch the Leaf groove Do not remove grease from the...

Страница 14: ...4 of 50 Figure 6 3 Do not allow motors to contact the table or any other objects Figure 6 4 Do not touch the gear cover Figure 6 5 Do not touch spring plungers or allow them to contact anything Figure...

Страница 15: ...000 24 Place the Lower Ring on the adjoining structure Insert fasteners and washers through mounting holes It is often easier to place the washer on the Lower Ring prior to inserting the screw Tighten...

Страница 16: ...Procedure Page 16 of 50 Figure 7 1 Pushing Leaf Pin to side to make room for SHC screw 15 000 24 only Figure 7 2 Inserting a SHC screw between Leaves on Lower Ring Figure 7 3 SHC screw and washer ins...

Страница 17: ...act the Lightband with the wrench See Figure 7 4 and note 1 below 7 1 9 Torque all fasteners on the Upper Ring Minimum allowable torque is 70 in lb PSC typically torques 100 to 115 in lb Higher torque...

Страница 18: ...ver the Retaining Ring 3 The Leaf Retaining Cord is seated in the groove of every Hinged Leaf See Figure 8 1 for proper orientation a Incorrect Leaf position b Correct Leaf position Figure 8 1 Verifyi...

Страница 19: ...pression clamp fixture etc An isolation system if attached to the Lightband can be included in this stiffness calculation See Figure 8 3 This compliance ensures the Lightband is able to expand or cont...

Страница 20: ...ensure 1 Cutout in Upper Ring aligns over Motor Bracket Assembly on Lower Ring 2 All Separation Connector Switch cutouts align 3 All Separation Spring tips protrude through appropriate holes in the Up...

Страница 21: ...lb Maximum force ____Springs x 30 lb _____lb Apply the force gradually and verify all Hinged Leaves rotate inside the Upper Ring as it compresses Stop once the minimum force is applied 8 1 11 Once the...

Страница 22: ...d be cognizant of their effect on the circuit 8 2 3 Verify the resistance between the power source PS and Lightband connector is less than 1 0 for each motor This applies to the complete loop power an...

Страница 23: ...zeroed 5 Vertical trigger level and channel Ch 1 recommended 6 Horizontal trigger position 7 Horizontal time scale s div will capture entire duration 8 2 9 Turn on the power supply output then activa...

Страница 24: ...PSC Proprietary 2000781J MkII MLB Operating Procedure Page 24 of 50 Figure 8 7 Stow Circuit...

Страница 25: ...De activate the power supply output 8 2 14 Save the voltage and current profiles for both motors and verify the data is readable 8 2 15 Figure 8 8 shows example stow voltage and current profiles Compl...

Страница 26: ...PSC Proprietary 2000781J MkII MLB Operating Procedure Page 26 of 50 Figure 8 8 Example stow voltage and current profiles at NTP...

Страница 27: ...nd peak current A mtr 1 0 1 8 3 Motors powered duration s 0 65 1 1 18 250 28 1 First peak current A mtr 1 9 3 0 2 Second peak current A mtr 1 1 1 9 3 Motors powered duration s 0 65 1 2 19 848 28 1 Fir...

Страница 28: ...o ground as this will bypass the Lightband s limit switches and allow it to deploy 9 1 3 May skip this step if no components wiring were added since stowing Verify the resistance between the PS and Li...

Страница 29: ...hannel Ch 1 recommended 6 Horizontal trigger position 7 Horizontal time scale s div will capture entire duration 9 1 9 Turn on the power supply output Then activate the timer relay Verify the followin...

Страница 30: ...PSC Proprietary 2000781J MkII MLB Operating Procedure Page 30 of 50 Figure 9 2 Set for Flight circuit...

Страница 31: ...r supply output 9 1 13 Save the voltage and current profiles for both motors and verify the data is readable 9 1 14 Figure 9 3 shows example Set for Flight voltage and current profiles Complete Table...

Страница 32: ...P Set for flight Electrical Parameters Item Description Units Allowable Measured Min Max Motor A Motor B 1 First peak current A mtr 1 05 1 7 2 Free running current average A mtr 0 02 0 18 3 Post free...

Страница 33: ...of their effect on the circuit 10 1 3 May skip this step if no components wiring were added since Set for Flight Verify the resistance between the PS and Lightband connector is less than 1 0 for each...

Страница 34: ...eters are not met make the required changes and re run the test circuit Upon completion of this step the Power and Measurement Circuit shall not be changed 10 1 10 The Upper Ring shall be constrained...

Страница 35: ...ting Procedure Page 35 of 50 Step Procedure Date Initials Tech QA 10 1 12 Remove the Test Circuit and connect the Lightband to the Power and Measurement Circuit per Figure 10 2 Do not apply power to t...

Страница 36: ...but do not change configuration 10 1 14 De activate the power supply output 10 1 15 Save the voltage and current profiles for both motors and verify the data is readable 10 1 16 Figure 10 3 shows samp...

Страница 37: ...NTP Table 10 1 Deploy electrical verification values apply only at NTP Deploy Electrical Parameters Item Description Units Allowable Measured Min Max Motor A Motor B 1 First peak current A mtr 1 7 3 4...

Страница 38: ...the washer against the Lower Ring and pull the screw out Push the Leaf Pins to either side if they rub the screw head Then remove the washers See Figure 11 1 Figure 11 2 Upon completion skip to step...

Страница 39: ...Tech QA 12 1 1 Contacting only the top surfaces push the Sliding Tube radially outward towards the motors Then while maintaining force on the Sliding Tube use a 7 64 inch hex key to rotate the ball s...

Страница 40: ...e the Separation Springs will not be inhibited from engaging their corresponding holes in the Upper Ring flange It is essential to align all 6 SV DOF prior to actually compressing the Lightband See Fi...

Страница 41: ...B Operating Procedure Page 41 of 50 Figure 13 1 Verify Lower Ring is leveled prior to mating SV Figure 13 2 Be cognizant of translational and rotational alignment and compliance Figure 13 3 Verify par...

Страница 42: ...motors Table 14 1 Motor Bracket Assembly resistance measurement values apply only at NTP Lightband State Object Being Measured Pin Connections Resistance Allowable Measured Stowed Motor A 2 4 8 0 to 1...

Страница 43: ...PSC Proprietary 2000781J MkII MLB Operating Procedure Page 43 of 50 Figure 14 1 Switch state after each Lightband operation...

Страница 44: ...luminum transition rings as adjoining structures for all Lightband operations and testing They provide the necessary stiffness to operate the Lightband and ease attachment to other structures Part 200...

Страница 45: ...Operating Procedure Page 45 of 50 16 Setup Pictures Figure 16 1 Example of equipment used to operate Lightband and record voltage and current Figure 16 2 DMM and DB 9 breakout cable used to measure M...

Страница 46: ...h ground and inadvertently bypassed the limit switches The Lightband thus deployed instead of the expected set for flight 5 The user chose to measure current not by current probes but by measuring vol...

Страница 47: ...are required at each Separation Spring location 18 1 Equipment Figure 18 1 shows the individual equipment necessary to operate LCTs and also the LCTs installed on the Lightband See Table 3 6 for a det...

Страница 48: ...eparation Spring as possible Restrain the LCT with a 1 4 inch open end wrench while torquing the screw with a 3 32 inch hex key as shown in Figure 18 2 Torque screws 10 to 12 in lb total Maximum runni...

Страница 49: ...cable tie break strength If using referenced tool set to 8 18 3 3 Place one cable tie around each LCT pair and pull until hand tight Do not compress the Separation Springs 18 3 4 Measure the distance...

Страница 50: ...w the Lightband N A N A 18 4 Flange Gap Measurements Table 18 1 Flange Measurements Meas Distance Between Upper and Lower Ring Flanges in LCT 1 LCT 2 LCT 3 LCT 4 LCT 5 LCT 6 LCT 7 LCT 8 LCT 9 LCT 10 L...

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