Vol. 10, No. 3, April 1984 --G' THE JOHNS HOPKINS UNIVERSITY . APPLIED PHYSICS LABORATORY

plA Bulletin CHEMICAL PROPULSION INFORMATION AGENCYA Department of Defense Information Analysis Center

MEETINGS & WORKSHOPS"CONGRATULATIONS The NASA-White Sands Test Facil- Shaub, (202) 921-3771 ; or Mr. John

AND BEST WISHES" ity located just outside Las Cruces, Hannum, CPIA, (301) 953-7100,New Mexico and surrounded by the x3151.

"A ND T O YOU SIR! " majestic White Sands National Monu- C O M B U S T I O N. . . ment has graciously consented tohost the 1984 S&EPS Annual Meet- M E E T I N Ging . This meeting, to be chaired by The 21st meeting of the JANNAFMr. John W. Marshall, AFRPL, Combustion Subcommittee is sched-- Chairman of the Subcommittee, will uled to be held October 1-5, 1984be held 8-11 May 1984. In addition, at the Johns Hopkins University,an SacEPS sponsored Workshop on En- Applied Physics Laboratory, Laurel,vironmental Risk Assessment, co- Maryland. The overall security levelchaired by Dr. Walter Shaub, NBS, of the meeting will be Confidentialand Dr. Edward Novak, Army CERL, with attendance limited to invitedwill take place at the same location U.S . citizens and to registered alienson 7 May. who posses the proper securityThe overall program is as follows : clearance and need-to-know certifi-

cation. Dr . Merrill K. King, AtlanticMonday, 7 May, Workshop on Research Corporation, is the Meet-

a, Environmental Risk Assessment ing Chairman.Andy and Ted Tuesday, 8 May, Technical Ex- The Meeting will cover chemical

During the month of March, CPIA change Presentations combustion phenomena occurringsaid farewell to two of its most Wednesday, 9 May, Technical Ex- within the interiors of lasers, guns,valuable and well-respected staff change Presentations and combustors of solid, liquid, andmembers . Theodore M . Gilliland Thursday, 10 May (AM), Technical airbreathing (excluding turbojets)retired from the Applied Physics Exchange Presentations missile and space propulsion systems.Laboratory on 30 March 1984, afternearly 18 years of service. On 2 Thursday, 10 May (PM), Panel Papers are being solicited in theMarch 1984, Andreas V. Jensen Meetings following specific areas of interest:ended his career of 17 years at APL. Friday, 11 May (AM), Tour of combustion technology for laser

WSTF applications; ignition and combustionBefore Ted Gilliland came to of gun propellants ; ignition and

CPIA, he served with the U.S . Navy Friday, 11 May (PM), TSG Meeting combustion of nitramine gun andfor 17 years, rising from ensign to rocket propellants ; steady statethe rank of commander. He grad- Forty-four papers will be given in combustion of solid rocket propel-uated from the Naval Academy in the technical exchange presentations lants ; solid rocket propellant com-1943 with a degree in engineering ; in seven sessions. The sessions are : bustion instability; metal com-later, he earned an MS in chemistry propellant safety and hazards, pack- bustion ; ignition and extinguishmentat the Naval Postgraduate School . aging, handling and transportability, of solid rocket propellants ; solidDuring his years in the Navy, he personnel protection, hazardous rocket propellant motor developmentserved variously as gunnery officer waste treatment and disposal, toxic problems; solid rocket motor ballis-of both a destroyer and an attack vapor detection, dispersion model- tics and performance ; combustionaircraft carrier ; as communication ling, and environmental impact . instrumentation, diagnostics, andofficer of a mine layer ; as executive signal processing ; combustion dy-officer of a destroyer and a destroy- Although this meeting will be namics of liquid and gaseous rocketer escort ; and in the positions of air UNCLASSIFIED, attendance is by in- propellants ; and airbreathing com-defense officer and combat informa- vitation to U.S . citizens only who bustion .tion officer on cruisers . He also are also members of the U.S . pro-taught at the Naval Academy and in pulsion community. The invitation The Announcement and Call forthe NROTC program at UCLA and and preliminary agenda have been Papers letter has been distributed toacted as Branch Head at the Bureau automatically distributed to those the combustion community . Thoseof Naval Weapons . individuals on the Subcommittee interested in submitting an abstract

mailing list . Additional copies may for this meeting, but who did notTed retired from the Navy and be obtained by contacting Mrs. receive the solicitation letter should

came to work at CPIA in 1966 . Here LaVerne Simmons, CPIA, (301) 953- contact Ms. Debra Sue Eggleston,he has specialized in analyzing tech- 7100, x3173. Questions regarding CPIA, (301) 953-7100, ext . 3152 .nical reports on ordnance engineer- the technical portions of the work- Abstracts are due at CPIA by Maying and on rocket and gun propulsion shop or meeting should be directed 7, 1984 .

Cont'd . on page 4 to Mr. Marshall, (805) 277-5642 ; Dr . "Meetings" Contd. on page 3

1

collected and compiled from stan-dard reference data sources, hand-

RECENT CPIA books, federal regulations, journalarticles, and technical reports . The

PUBLICATIONS A N D formatted sheets include data on the

C P T R S I N PROGRESSingredient's chemical name; struc-ture ; CAS registry number; physical,thermal, crystal, optical, electrical,explosive, and sensitivity properties;hazards ; and military specifications .

CPIA Pub . 319, "Ramjet Design Solid Propulsion Cost Estimating The manufacturers'/suppliers' sheetsHandbook," Revision A, Feb 1984 . Computer Programs ; include data on its packing, shipping,

Burn Rate Enhancement by Physi- safety, storage, handling, uses, costs,CPIA Pub . 384, "14th JANNAF cal and Mechanical Techniques ; and purity.

Plume Technology Meeting," Vols . Data Sources for CompositeI-II, Nov 1983 . Rocket Motor Cases ; and Q. Are the data in the formatted

Moisture Effects on Solid Propel- sheets evaluated by the CPIA staff?CPIA Pub. 388, "1983 JANNAF lants . A . No . We do not attempt to

Structures and Mechanical Behavior evaluate the accuracy of the dataSubcommittee Meeting," Nov 1983 . or determine the efficacy of the

tests used . In cases where there areLS84-01 : Deflagration-to-Deton- To make our products and services conflicting data or ranges of data,ation Transition of Solid Propellants better known to the propulsion all values and ranges are given .(supersedes LS82-O1 ; period covered community, we have been running a However, we do have a listing order1956-1983E; 356 citations and series of feature articles in the of importance . Evaluated/validatedabstracts ; titles and subject index) . Bulletin about our manuals . In this data, compiled data, experimental

issue, we report on an interview with data, and derived/estimated data areLS84-03 : Consolidated Charges and Tom Christian, the Editor of the listed in that order . Examples ofVolume-Limited Ammunition (super- CPIA/M3 Solid Pro ;.jellant Inyre- evaluated/validated data are thesedes LS83-05 ; period covered 1969- dients Manual . publications of the National Ref-1983 ; 67 citations and abstracts ; erence Data System (NRDS) at NBS,titles and subject index) . Q . What is the purpose of the the Journal of Physical and Chemical

manual? Reference Data, and the JANNAFOne Chemical Propulsion Tech- A. The purpose of the manual is Thermochemical Tables . Examples

nolo Review is undergoing review to provide, in a single source, of compiled data include CRC Hand-for release and publication : information on the physical and book of Chemistry and Physics,

chemical characteristics of individ- LLNL's Explosives Handbook, andCPTR 84-25, "Plume Electro- ual ingredients used in the formula- AMCCOM's Encyclopedia of Explo-

magnetic Effects", by T. M . tions of solid rocket and gum pro- sives and Related Items . At present,Gilliland . pellants . the compilers of data for the manual

use 12 such handbooks . ExamplesEight Papers are in various stages Q. What types of ingredients are of experimental data include data

of preparation : listed? extracted from journal articles andtechnical reports . Finally, de-

Glycidyl Azide Polymer Tech- A . Oxidizers, polymers, plasticizers, rived/estimated data are based onnology; metals, burn rate catalysts, coolants, theoretical considerations rather

Vulnerability of LOVA Propellants ; curing agents, and stabilizers . than measurements or observation .Thermal Vulnerability of Tactical An example is the calculated heatOrdnance ; Q . What criteria are used to of formation from vapor pressure

Particle Size Analysis ; determine inclusion of a particular data . In the hazards section of theingredient in the manual? manual, we report regulatory and

THE CPIA BULLETIN A . The ingredient must be either advisory information from suchis ppublished bimonthly by

in a fielded or in an advanced sources as the Code of FederalCHEMICAL. PROPULSION INFORMATION AGENCY propellant formulation and it must Regulations and the ACGIH's TLVsO

be obtainable in bulk quantities . for Chemical Substances and Phys-The Johns Hopkins University lcal Agents . Finally, we use suchApplied Physics LaboratoryhRoad Q. How is the manual organized? references as Chemicalweek'sLaurel, Maryland 20707 Buyer's Guide, Thomas' Register, andOperating under Contract N0002a-e3-C-5301 A . It is divided into two main Chem Sources-USA to determine the

sections : the formatted data sheets manufacturers and suppliers .Mrs. Jeanne C . wyson g Managing EditorMrs. Debra S . Eggleston Associate Editor and the manufacturers/suppliersMs. Janet M . Paplauskas Artist-Illustrator data sheets . The manual contains Q . In what scientific units are the

'The Chemical Propulsion Information Agency three indexes : unit number order, data reported?(CPIA) is a lloU Information Analysis Center re- chemical name, and empiricalsponsible for the acquisition, compilation, analysis, formula . It also contains an alpha- A " In the formatted data sheets,and dissemination of information relevant to chem-ical propulsion . In addition, CPIA provides technical betical list of the abbreviations and all data are reported in the Inter-and administrative support to the Joint Army, Nav y , acronvms used in the data sheets . national System of Units (SI) . TheNASA, and Air Force Interagency Propulsion Com-mittee (JANNAF) . The purpose of JANNAF is tosolve propulsion problems, effect coordination of Q. What are the differences metric or English units, follow thetechnical programs, and promote an exchange of between the formatted and the SI units in parenthesis . The data intechnical information in the areas of missile, space,and gun propulsion technology . A fee coin mensurate manufacturer'/suppliers' data sheets? the manufacturers'/suPP Hers' datawith CPIA products and services is charged to sub- sheets are not converted to SI units .scribers . .Also, subscribers must meet the security A. The data in the formatted dataand need-to-know requirements . sheets have been systematically

2

Q. How many data sheets are in Q. Who do I contact if I have C O M B U S T I O Nthe manual? questions, suggestions, complaints,

etc.? WORKSHOPA . Currently, there are 71 datasheets, 42 formatted sheets and 29 A . Call Tom Christian at (301) 953- The JANNAF Workshop on Ad-manufacturers'/suppliers' sheets . 7100, ext . 3153 . vanced Diagnostics for Transient

Combustion Events will be held MayQ. How many supplemental data 15-16, 1984 at the South Campus ofsheets are added r year? the National Institute of Environ-A. Since 1981, we have published P S H S M E E T I N G mental Health Services (NIEHS),14 new formatted and approximately The 1984 JANNAF Propulsion

Research Triangle Park, North10 new manufacturers'/suppliers

Systems Hazards Meetingg will beCarolina . The unclassified workshop

data sheets per year . We expect to held 18-20 June at the Armywill discuss the unstable, non-cyclic,

maintain that yearly rate . Ballistic Research Laboratory,combustion pprocesses which occurwithin chemical rockets and guns ;

Q . What is the security classifi- Aberdeen Proving Ground, ':Maryland . the available diagnostic techniquescation of the manual? Session topics will include : Weapons to characterize these transient

Systems Safety Evaluation ; the processes ; and the diagnostic needsA. The manual is Unclassified . International Scene; Tactical Missile verses capabilities . Its purpose isHowever, it carries both limited Systems Hazards Evaluation ; Ma- to promote a closer workingdistribution and foreign export ex- terials Properties and DDT; DDT relationship between the diagnos-clusion statements . Modelling; Gun Propulsion Hazards ticians and combustion specialists .

Evaluation ; SDT/XDT Hazards Tech- It is sponsored by the JANNAFQ. How may one obtain a copy of nology ; Strategic Missiles Hazards Combustion Subcommittee . Dr .the manual and its supplemental data Evaluation ; and Laboratory Test David M. Mann, U.S . Army Researchsheets? Methods . Office, is the coordinator . FurtherA . Your facility must be registered Following the meeting, there will

information about the workshop maywith the Defense Technical Infor- be one and one-half day workshop,

be obtained by telephoning Ms .Debra S . Eggleston (CPIA), at (301)mation Agency (DTIC) and be a

subscriber to CPIA. Employees of entitled Propulsion Systems Per- 953-7100, ext . 3152 .formance/Hazard Trade-Off', 21-22

JANNAF agencies, i .e ., Army, Navy, June,, at the same location .Air Force, may obtain, with- G A C I A C

out cost, a personal copy of themanual and its supplements by

Further information on the meet- WORKSHOPsimply calling Mrs. Jeanne Wysong in and/or workshop

Debramay be obtained

at (301) 953-7100, ext . 7800 . Indus- from Ms . Sue Eggleston, The Joint Service Guidance andCPIA, (301) 953-7100, ext . 3152 .trial, academic, and other govern-

ment employees should contact their workshop to provide a common

respective libraries or technical in- forum for the exchange of inform-formation centers and request the ation and to foster a more effectiveservice . The cost for the first copy S & M B S MEETING dialogue among the engineering dis-

of the manual is $200 plus $120 per ciplines on all aspects of bank-to-

year for the supplements . The cost A joint technical information ex- turn controlled terminal homing

for each additional copy is $200 plus change meeting has been called by guided missiles . The workshop willthe Chairmen of the Structures do be held on 19-20 September at the

$30 per year for the supplements . Mechanical Behavior Subcommittee Applied Physics Laboratory of theThe $200 fee per manual is a one and the recently organized Com- Johns Hopkins University . Specifi-time charge . Consequently, if your posite Motor Case Subcommittee . tally, it is anticipated that at leastfacility subscribes to this product, The Navy will be the sponsoring the following topics will be coveredyour cost is only $30 per year to JANNAF agency and NASA will host by the workshop : overviews fromkeep it up to date . the meeting . The tentative date and the services on both short- and

How do the subscribers of the location are 27-30 November 1984 long-term bank-to-turn controlled

manual feel about its usefulness? at the Jet Propulsion Laboratory of missile applications; bank-to-turnthe California Institute of Tech- missile requirements ; critical inter-

A. Although we have just completed nology in Pasadena, California . The disciplinary tradeoff issues, inter-analyzing the responses to our user meeting is scheduled to have a actions, and composite design fac-satisfaction questionnaire, I really do security level of CONFIDENTIAL, tors ; guidance options and sensornot know the degree of user satisfac- and attendance will be limited to configurations ; airframe configura-tion . The replies from the JANNAF U.S . Citizens having a need-to-know tions and issues ; control methodologyagencies show a high degree of in chemical propulsion . Mr . Ronald and concerns ; propulsion tradeoffssatisfaction, but we did not receive F . Vetter and Mr. Robert T. Ried, and issues .a single reply from either our both of NWC/China Lake, are theindustrial or academic subscribers! meeting Program Co-Chairmen . Classified or unclassified papersA quick review of the manual's devoted to the topics outlined abovedistribution page shows that it is The official meeting "Announce- are solicited for presentation at thesent to individuals within the govern- ment and Call for Papers" will be workshop. One-page (approximatelyment, but is only sent to the libraries distributed to the rosters of the two 300 words) unclassified abstracts areof nongovernment organizations . subcommittees in mid-to-late April requested for paper selection by 13Consequently, the industrial and aca- 1984 . If you wish to submit an April 1984 . All abstracts, papers,demic scientists and engineers do not abstract, and haven't received a copy and related correspondence should behave a copy of the manual at their of the announcement by early May, addressed to : GACIAC/IIT Researchdesks . This is why I urge these please contact Mrs . LaVerne D . Institute, 10 West 35th Street,people to contact their librarians and Simmons at CPIA, (301) 953-7100, Chicago, IL 60616, telephone (312)ask to receive a personal copy . ext . 3173 . 567-4510 .

TWO

"BLAST-OFF"

INTO

NEW ORBITS

Hail! Hail! The Gangs All Here . . . Almost (some hurried back to mind the store!) Backrow (1-r) Fran Gilliland, Tom Christian, Harry Hoffman, Ron Brown, Lee Piper, TomReedy, Les Holtschlag, Karen Strange, Peg Campbell, Clark Youmans . Bottom row (1-r)Claire Skarda, Lorri Pickett, Ted Gilliland, Debbie Eggleston, Janet Paplauskas, BeaHackett, Alice Bye, Jeanne Wysong and Edith Pool .

and to sing some old Navy songs .'_

Ted will now have time tovacation with his wife Frances andtake advantage of the good fishingat their cabin on the Juniata River

_ _ in Pennsylvania . He'll also be wRworking on his golf game, keepingup with his son and daughter, andusing his new camera equipment to

- take pictures of Theodore WinslowGilliland, his year-old grandson .

. Andy Jensen had acquired a broad ,range of experience, from analyticalchemistry to missionary work, by the

`_ time he joined CPIA in 1967 . Hegraduated cum laude from the Uni-versity of Redlands in 1951 with a

t~ BS in chemistry and took additional Synod, in Eket . His missionarycourses at the University of Michi- career came abruptly to an end two

technology; he has numerous publica- gan and Arizona State University . years later with the outbreak of thetions to his name . In 1982, he As an analytical and physical Biafran War. I-le returned to thebecame supervisor of CPIA's chemist, Andy worked on liquid States for a tamer career with theJANNAF and User Support Section . rocket propellants, first at the Naval Applied Physics Laboratory.Ted has worked closely with Ordnance Test Station in ChinaJANNAF, acting as CPIA represent- Lake, CA, and then at the Air Force At CPIA Andy has acted as editorative to the Executive Committee Rocket Propulsion Laboratory, of the Chemical Propulsion Ab-and to the Exhaust Plume Tech- Edwards AFB. His work earned him stracts since 1971 . He was at onenology Subcommittee . He has the USAF Outstanding Performance time the CPIA representative to theagreed to make himself available to and Sustained Superior Performance JANNAF Safety and EnvironmentalCPIA through the remainder of 1984 Awards . Protection Working Group and editedon a part-time, on-call basis . the three-volume Hazards of Chem-

In 1965, Andy sold most of his _ical Rockets _and Propellants Hand-At the 1984 JANNAF Propulsion belongings and moved with his wife book . His work with hazardous

Meeting in New Orleans, members and three small daughters to Nigeria . materials led him to supervise theof the Executive Committee and There he took on the role of hospital development of the Department ofother friends gathered to honor Ted, administrator at the Mission Hospital Transportation's Emergency _Re-to wish him well on his retirement, for the Lutheran Church, Missouri sponse Guidebook ERG) . Over

4

740 .000 copies of the 1980 ERG have have been pushed to one side, Ed medium launch vehicles in 1969,been distributed to fire, police, and says, since he's trying to assume program manager of the Payloadother emergency response organiza- command of a personal computer Assist Module in 1979, director oftions . It has been translated into that doesn't always do what he wants space launch vehicle programs inJapanese and Portuguese editions . it to . 1980, and, finally, director of spaceAndy recently completed the 1984 programs in 1981 .update of ERG, which had a firstprinting of 730,000 copies . For these A R C A w a r d e defforts, the DoT Materials Trans-

Tomahawkportation Bureau, Research andSpecial Programs Administration,

_

The Propulsion Division ofpresented Andy with the Administra- Atlantic Research Corporation, withtor's Award for Meritorious Public '~ its joint venture partner, AppliedService . ~' Technology Division of TRW, Inc .,

has been awarded a contract for theAndy has been a member of AIAA, '" continued production of the rocket

ASTM, and ACS. He has served on motor for the Tomahawk Cruisethe Advisory Board of the Delmar Missile . The contract was awardedand Potomac Association of Bomb CPIA also welcomes Claire by the Joint Cruise Missiles ProjectTechnicians and Investigators . His

Skarda, who has accepted a perma- of the Department of Defense forthree daughters are now grown, andnent position with APL as an Asso- the second consecutive year at the

he has two grandchildren . ciate Chemist . Claire has been maximum production quantity per-

CPIA will miss Ted Gilliland and working at CPIA since June 1982, but mitted by the government .

Andy Jensen and wishes them both as a contract employee from TAAG, Atlantic Research produces themuch happiness . Inc ., of College Park, MD. She will solid propellant rocket motor and

continue acting as CPIA representa- TRW produces the motor's noz-tive to the JANNAF Composite Motor zle/thrust vector control system .A n d , J o i n i n g Case Subcommittee, as well as index- The rocket motor and vectoring

t h Ging and editing for the Chemical nozzle, which have performed flaw-e (" o 11 p . . . Propulsion Abstracts . lessly on all Tomahawk flights, boost

the missile to cruise velocity fromClaire earned a BA in chemistry land, surface shipboard, or sub-

r ; at the College of Notre Dame of marines .Maryland, an SM in Materials Sciencesand Engineering at MIT, and an MA R o c k e t d y n ein creative writing at The Johns

,: Hopkins University . W i n s Stage I VPeacekeeper

McDonnell The Air Force Ballistic MissileD o U g I a S Office has awarded Rockwell Inter-

national's Rocketdyne Division aA p p o i n t m e n t s fixed-price incentive contract for

CPIA welcomes Ed Case, contract John F . Yardley, president of initial production of Peacekeeperemployee from Augmentation, Inc ., McDonnell Douglas Astronautics missile Stage IV, it was announcedwho comes to us from an assignment Company, has named Adrain P . by Division President Richardat Electric Boat, Groton Connect- O'Neal as vice president for small Schwartz .icut, where he did documentation on intercontinental ballistic (ICBM) pro- "This initial production contract,"submarine functions . grams and Charles A . Ordahl as vice according to Paul N . Fuller, Peace-

president for space programs . keeper program manager at Rocket-With a formal training in chem- dyne, "calls for fabrication of 23

istry, physics and metallurgy, Ed's Both nominees approach their new fourth stages." Of these, 21 will beindustrial experience involved high positions with long years of exper- delivered to the Air Force with twotemperature materials and reactions, ience in the Company. O'Neal joined designated for production qualitypolymers and analytical methods . McDonnell Douglas in 1950 as a assurance testing . The productionHis writing experience included a structures engineer, working on contract is projected to run throughposition as Technical Editor for a various space and missile programs mid-1987 and involve some 350news weekly directed to operating such as Thor, Delta, and Saturn IV . employees at Rocketdyne . Themanagement . Since coming to the He moved to Huntington Beach as division began system definitionWashington area he has handled director of development engineering work for the Air Force in April 1978,books and other writing tasks for for the Saturn/Apollo program in full-scale development in SeptemberNASA

'Department of Commerce 1968 . In 1978, he was named vice 1979, and expects qualification ef-

and the Department of Labor, set p engineering, forts to be concluded by mid-1986 .up editorial groups, edited studies on 1981, vice president of space pro-energy, medical topics, acoustics, grams. PASS IT ON. . .and others . Ordahl, who replaced O'Neal in his

previous position, joined McDonnell Know someone who was left out?Ed has been involved in community Douglas in 1956 as an engineer in

activities such as the Board of the missile and space systems Pass your copy of the Bulletin toZoning Appeals in one location, division, moved to Huntington Beach the friend we missed and if he wantsschool board support in another . His as deputy chief engineer in electron- to be on the mailing list, he needinterests in photography and music ics, was named chief engineer for only drop a card to CPIA .

5

C S D P U R S U E S inferior to those manufactured from

GRAPHITE CASE TECHNOLOGY the Kevlar polymer fibers . Thedevelopment of IM-6 graphitestrands gave CSD engineers amaterial with improved physical

' .- properties . This led to the pro-duction of a case that a CSD press

_ release states is 15 percent lighterand 20 percent stronger than a,,Kevlar case of similar proportions .

' c7, , : . . A space motor using such a case7 J1 , would carry a large propellant

_ . . , :. charge, hence, produce greaterb 3 thrust and have a larger payload

capability than motors of like sizein use today .

Eugene Francis of CSD's Researcha and Advanced Technology group, said

- - the case will be tested to simulatewhat it "sees" as it undergoes

- manufacture, casting with propel-lant, curing, thermal cycling and upto and including ignition . The casewill then be loaded with propellantand tested further for reactions topressure . The final step will be

United Technologies Chemical Nebraska under CSD's direction . The dissection of the vessel and analysisSystems (CSD), will start exhaustive work was funded by the Air Force of its behavior during overall testing.structural testing and analysis of its Rocket Propulsion Laboratory .first full-sized advanced space motor All of the data collected will gocase made from 111-6 graphite fibers . CSD reports its engineers have to make up a computer program for

been studying the use of graphite aerospace industry use which willDesigned in mid-1983, the case fibers for 10 years and have wound predict the effects of specific con-

was manufactured at Brunswick's or produced a number of subscale ditions such as cold, heat andAerospace Division in Lincoln, motor cases that proved to be pressure .

STINGERCONTRACTS IMPROVEDAWARDED SPACE MOTOR They are : a head-end web grain ;

Atlantic Research Corporation has TESTEDhigh energy propellant ; an aft-end-mounted, able, toroidal igni-been awarded a contract from a lightweight extendible exitGeneral Dynamics for rocket motors An advanced space motor that cancone deployment system .for the Army's Stinger Missile Sys- deliver payloads 17 percent heavier

tem . The rocket motors will be than other motors of the same size The propellant used in the ad-manufactured at the ARC Propulsion in use today has been successfully vanced space motor was a 90%Division facilities in Alexandria and test fired by United Technologies solids/20% Al HTPB propellant con-Gainesville, Virginia . Chemical Systems (CSD), according taining HMX as an energetic ad-

to Mr . A . J . Medica, executive vice ditive ; the density impulse is 4.3%Stinger is a small, lightweight, president and general manager . The higher then the current Inertialheat-seeking antiaircraft missile, motor was fired at the Air Force Upper Stage propellant . By tailoringoriginally designed to be shoulder Arnold Engineering Development the burn rate of the propellant tofired by individual infantrymen . Center, Tullahoma, TN, at an the same low value used on the IUSStinger can also be launched from average simulated altitude of motor, the nozzle dimensions werehelicopters, conventional aircraft, 116,000 feet . In operation for 117.7 the same as the existing SRM-2armored vehicles and small ships . seconds, the motor produced a design . Use of HMX in the pro-

specific impulse of 307.5, according pellant not only increases the pro-Atlantic Research Corporation has to Robert J . Hall, CSD manager for pellant specific impulse but alsoalso received a contract from the the project, who said it used the cools the combustion gases . ThisU.S . Army Missile Command for largest piece of four-directionally- allows the nozzle components toproduction of eject rocket motors reinforced (4D) carbon/carbon ever survive the 2 minute burn time infor the Stinger Launch Simulator used in a motor firing for the spite of the unusually high solids(STLS) . The STLS is a training integral nozzle throat and entrance loading and aluminum content .system that essentially duplicates a (ITE) component .tactical weapon launch . It provides The improved performance head-comprehensive gunner training in- The Improved Space Motor (ISM)

end grain is a propellant charge ofeluding the launch of a dummy that was tested uses some com-very high volumetric loading thatmissile . STLS was originally ponents from the Inertial Upperleaves no space for the igniter atdeveloped by the Brunswick Corpor- Stage's SRM-2 motor, also made by the front of the motor, which is theation and Atlantic Research for CSD, and is of the same size . Four common practice in the industryMarine Corps use and it is presently advanced subsystems account for the

being adopted by the Army. high performance, according to CSD.

6

today . The igniter used in this casewas an aft-end mounted, consumable NOVEL EXTENDIBLE EXIT CONE TESTEDtoroidal device which looks like afiberglass doughnut placed aroundthe outside of the nozzle base .After igniting the motor by spewinghot gases onto the propellant chargethrough a circle of 18 small holes, W.rrthe igniter is consumed by themotor's high temperature exhaustgases .

A new, light-weight EEC deploy-ment system called an InflatableDeployment System (IDS) was intro-duced with the new motor. The basecone and the extendible cones areinterconnected with fabric mem- -` ' _branes formed as rolling convolutes .These convolutes are sized and ; , . . eplaced in the stowed or retractedposition so that when the EECs arein the deployment or extended con-dition, the membranes form a "liner" ^fir-~ F^-'-~over the inner walls of the EECs.The closed vessel is completed witha fabric membrane covering theaftmost EEC exit plane . When .pressurized, the system creates "pressure-area loads on the EECs that "`move them to the extended and

Aerojet Strategic Propulsion Com- showed that SLEEC increased thelocked position for operation in

?any successfully demonstrated an vacuum specific impulse as was pre-space . The motion is accommodated

innovative shingle lap extendible exit dicted and verified theoretical per-inin thethe membrane system by the

cone (SLEEC) recently during a test formance increases . The testTypical deploy-

firing at the Air Force Rocket demonstration achieved all test ob-ment pressures are less than one inch

Propulsion Laboratory (AFRPL). jectives."of water so that an extremely smalldeployment gas source is required .

The SLEEC consists of a number The SLEEC concept can be

"The overall objective of the of inner and outer "shingles" made utilized to increase the performance

project was to successfully complete from an ablative composite material. of any lower or booster rocket stages

a static test that would demonstrate The shingles are overlapped and which operate from sea level to alti-

a predictable improvement in motor packaged tightly around the nozzle's tude conditions by providing an opti-

performance (total vacuum impulse) fixed exit cone, which results in mum expansion ratio vs altitude . In

resulting from the application of greatly reduced stowage volume . addition, the unique packaging cap-advanced technologies in a con- The exit cone deployment system ability permits installation of thefiguration typical of present space consists of synchronized axial and device within available envelopespropulsion systems," Hall said. radial cross-drives powered by an that were previously considered too

electric motor. The cross-drives limited for large expansion ratio"The need for an improved per- provide simultaneous extension and nozzles . The SLEEC concept also

formance space motor capability radial growth . Deployment of the represents a low cost alternative tocomes from ever-increasing payloads SLEEC over the exhaust plume producing very large monolithic noz-requirements . This improved per- generates a larger and larger cone, zle exit cones .formance must be obtained by in- making it a true variable expansioncreasing the total impulse and mass area ratio device . This feature Craig Landrith is the programfraction of the motor. permits optimum altitude com- manager at Aerojet for the SLEEC

pensation for a solid rocket motor Program. His team is made up of"Current shuttle pricing policies during booster ascent, thereby im- Dan Wold, principal investigator ; Jim

do not permit growth in motor size . proving the booster's delivered per- Boyd, operations technical manager;So, total impulse can only be formance . The initial feasibility Bill Baker, who invented SLEEC andeconomically increased by a com- demonstration test was conducted on served as technical manager duringbination of several steps . a Super BATES (Ballistic Test Evalu- the design phase which lasted from

ation System) test motor at the 1980-81 ."We can increase propellant AFRPL as part of the Advanced Ex-

weight, the energy characteristics of tendible Exit Cone Concepts pro-the propellant, and nozzle gram .efficiency," Hall stated . PLEASE CONTRIBUTE

Tom Kinsel, AFRPL programWhile primarily a CSD-funded manager, says, "The test lasted for Your contribution of news items for

project, the Air Force Space Division nineteen seconds with SLEEC de- the Bulletin is important to us. Wehelped out by providing the test ployment being initiated one second also welcome your comments and sug-facilities and residual IUS hardware after ignition and continuously ex- gestions for future issues .in the form of the case and EEC tending for the next fifteen seconds .portions of the nozzle . The preliminary data calculations

JANNAF MEETING CALENDARABSTRACT/PAPER1984 MEETING TYPE LOCATION SEC . CLASS . DEADLINE

7-I1 May 1984 SAFETY dr ENVIRONMENTAL Technical NASA-WSTF Unclassified Past 27 AprPROTECTION SUBCOMMITTEE MEETING Exchange Las Cruces, NM

18-20 June 1984 PROPULSION SYSTEMS HAZARDS Technical BRL Confidential Past 4 JuneSUBCOMMITTEE MEETING Exchange Aberdeen PG, MD

24-26 Sep 1984 PROPELLANT CHARACTERIZATION Technical AF Academy Unclassified Past 10 SepSUBCOMMITTEE MEETING Exchange Colorado Springs, CO

1-5 Oct 21st JANNAF COMBUSTION MEETING Technical JHU/APL Confidential 7 May 10 SepExchange Laurel, MD

27-30 Nov COMPOSITE MOTOR CASE SUBCOM- Technical CIT/JPL Confidential 29 May 13 NovMITTEE/STRUCTURES AND MECHANICAL Exchange Pasadena, CABEHAVIOR SUBCOMMITTEE JOINTMEETING

4-6 Dec ROCKET NOZZLE TECHNOLOGY Technical MSFC Unclassified 11 June 5 NovSUBCOMMITTEE MEETING Exchange Huntsville, AL

MEETING CALENDAR SUBJECT TO CHANGE. FOR LATEST DETAHS, CONTACT THE CPIA .

U.S. POSTAGE

CPS Bulletin AGENCY iINFORMATION LAUE, RYYLANDPERMIT No . 1885

THE JOHNS HOPKINS UNIVERSITY " APPLIED PHYSICS LABORATORYNONPROFIT ORGANIZATION

JOHNS HOPKINS ROAD, LAUREL, MARYLAND 20707

ADDRESS CORRECTION REQUESTED

8