The hardware development schedule for the Common Lunar Lander's (CLLs) tracking system is presented. Among the topics covered are the following: historical perspective, solution options, industry contacts, and the rationale for selection

Culpepper, William X.

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NASA Technical Reports Server

f Johnson Space Center r" -*- L>* Artemis I INITIAL HARDWARE DEVELOPMENT SCHEDULE 
William X. Culpepper/EE6/x3 1479 Tracking and Communications Division 
https://ntrs.nasa.gov/search.jsp?R=19920009596 2020-03-24T07:12:23+00:00Z
Johnson Space Center 
Arkmis 
William X. Culpepper/EE6/x3 1479 Tracking and Communications Division 
TRACKING SYSTEMS 
BACKGROUND MATERIAL 
K)R THE . . 
COMMON LUNAR LANDER 
,'- 
Johnson Space Center r" A;,+ 
Arkmis 
HISTORICAL PERSPECTIVE 
0 THREE SPACE PROGRAMS HAVE ACCOMPLISHED PLANETARY LANDINGS 
0 SURVEYOR 
0 APOLLO 
0 VIKING 
0 ALL THREE USED THE SAME BASIC TECHNIQUE 
0 ALTIMETER FOR RANGE TO THE SURFACE 
0 VELOCITY SENSING RADAR FOR MAJOR AXES VELOCITY MEASUREMENTS 
ALL THREE SYSTEMS WERE SUCCESSFUL 
William X. Culpepper/EE6/x3 1479 Tracking and Communicafions Division 
NI\SA Johnson Space Center 
SOLUTION OPTIONS 
0 OFF THE SHELF HARDWARE 
0 SOME EXISTING ALTIMETERS MAY BE CLOSE 
0 N O  RADARS ARE KNOWN TO EXIST 
0 VENDOR SURVEY 
0 WHAT APPROACH AND TECHNOLOGY THEY RECOMMEND 
0 SYSTEMS THEY MIGHT HAVE THAT ARE APPLICABLE 
0 ESTIMATES OF SIZE, WEIGHT, POWER, AND SCHEDULE 
. - 
William X. Culpepper/EE6/x3 1479 Tracking and Communications Division 
f Johnson Space Center Ar&mIs 
INDUSTRY CONTACTS 
0 INITIAL INDUSTRY CONTACTS 
0 TELEDYNE RYAN 
0 GENERAL DYNAMICS 
0 HUGHES AIRCRAFT COMPANY 
0 LORAL DEFENSE SYSTEMS 
0 MOTOROLA 
0 McDONNELL DOUGLAS 
0 MARTIN MARIETTA 
A PACKET OF INFO WAS MAILED TO SIX OF THE SEVEN COMPANIES. 
TWO COMPANIES CHOSE NOT TO RESPOND. 
0 RESPONDING COMPANIES WERE 
0 TELEDYNE RYAN 
0 GENERAL DYNAMICS 
0 HUGHES AIRCRAFT COMPANY 
0 LORAL DEFENSE SYSTEMS 
William X. Culpepper/EE6/x3 1479 Tracking and Communications Division 
Johnson Space Center r" A>* 
Artemis 
RESPONSE CONTENT 
TWO COMPANIES RESPONDED WITH DESIGNS BASED ON EXPERIENCE WITH SURVEYOR AND VIKING 
0 HUGHES AIRCRAFT WITH AN UPDATE OF THE SURVEYOR SYSTEM 
0 DESIGN UPGRADED WITH TODAY'S MIMIC TECHNOLOGY 
0 CHALLENGES ARE ANTENNA AND COMPRESSED SCHEDULE 
0 SCHEDULE ESTIMATE IS 2 YEARS AND 9 MONTHS FOR FIRST FLIGHT UNIT 
0 NO COSTING 
o TELEDYNE RYAN PREFERS THE BASIC VIKING APPROACH 
0 RADAR WAS FOUR BEAM WHICH YIELDS REDUNDANCY 
0 RADAR RECEIVER UPGRADE FROM 14 dB NF TO 5 dB NF WILL COVER 15Km 
REQUIREMENT 
0 ASSUMING JANUARY 1992 START, DELIVERY IS JUNE 1,1994 
0 COST ESTIMATE IS $l.SM/COPY FOR BOTH ALTIMETER AND RADAR 
0 NON-RECURRING COST IS $4M TOTAL FOR BOTH ALTIMETER AND RADAR 
0 COST ESTIMATE BASED ON VIKING COSTS IN TODAY'S DOLLARS 
+7 Tracking and Communications Division 
N/\Sn Johnson Space Center 
Arkmis 
RESPONSE CONTENT (CONTINUED) 
TWO COMPANIES RESPONDED WlTH DIFFERENT APPROACHES FROM SURVMOWVIKING 
0 GENERAL DYNAMICS RESPONDED WlTH TECHNOLOGY FROM DOD APPLICATIONS 
0 DATA IS PROPRIETARY 
0 APPROACH INCLUDES SOME PIECES THAT EXIST TODAY AND SOME TO BE 
DEVELOPED 
0 NONE WERE DNELOPED FOR THIS APPLICATION 
0 NONE HAVE BEEN SEASONED IN THE WORLD OF SPACE 
0 LORAL DEFENSE SYSTEMS RESPONDED WlTH TECHNOLOGY BEING DEVELOPED BY THE 
ARMY 
0 CONCEPT, THOUGH PROMISING, IS IMMATURE 
0 DATAIS PROPRIETARY 
N1)Sn Johnson Space Center r" A>* 
Arternis 
Tracking and Communications Division 
PERSPECTIVE ON THE RESPONSES 
0 WHAT THE RESPONSES ARE NOT 
0 REPRESENTATIVE OF A COMPLETE COMMERCIAL SURVEY 
0 A STUDY EFFORT 
.- 
0 A SYSTEM DESIGN 
0 WHAT THE RESPONSES ARE 
0 A CURSORY LOOK REQUESTED ON 8/2 AND COMPLETED BY 8/12 
0 BESTGUESSES 
0 A COURTESY PARTICIPATION 
0 WHAT THE RESPONSES COST 
0 ZERO 
N/\SA Johnson Space Center 
Artemis 
RATlONALE FOR SELECTION 
0 SHORT TIME SCHEDULE REQUIRES USE OF PROVEN TECHNIQUES 
0 THE SURVEYORNIKING/APOLLO APPROACHES WORKED 
0 NEW APPROACHES REQUIRE TECHNOLOGY INCORPORATION AND DEVELOPMENT TEST 
0 HISTORICAL DATA PROVIDE REALISM IN ESTIMATES FOR SIZE, WEIGHT, POWER, DELIVERY 
AND COST 
0 THE VIKING RADAR HAS A FOURTH SENSING BEAM WHICH OFFERS REDUNDANCY SINCE 
ONLY THREE ARE NEEDED 
William X. Culpepper/EE6/x3 1479 Tracking and Communications Division 


Initial Hardware Development Schedule

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