Subject: Curtiss Wright rotary
From: ACRE
Date: 10/20/2004, 11:03 AM
To: Jeremy Kinney
CC: Joseph Suarez <JSuarez@nasm.si.edu>

 
Some of you that fail to read all messages noticed that I have been
gone
for the last few days :) The newsletter shuts down when I am gone.

I was in DC for a wedding and I found time to visit the new Smithsonian
Air and Space museum annex at Dulles airport. Therein was/is this CW
Wright
rotary aircraft engine.  Typically the spec info card is all wrong.

Not much new in the museum. Seems the Smithsonian is a day late
obtaining
all the really interesting aircraft of the world. There are one or two
unique airplanes but most of what is in there is also in another half
dozen
museums around the world. I was disappointed that they did not have a
R3350 TC
which happens to be one of the most significant piston engines ever.


The engine display needs redoing placing all the engines in a line so
one
can see
both front and back up close (and take better pictures).

Paul Lamar

Paul,
What a great little engine - excellent power to weight ratio, and at
5,000
RPM.

I also like the housings with integral engine mounts, I was wondering how
that could be done. Do you see any short falls with that mounting
arrangements?

Now why doesn't someone buy that design rights and tooling - unless
there's
something wrong with it.
George ( down under)

The mounting is fine and it appears to be interchangeable with a
Continental
bed mount.

Take the data with a grain of salt. The engine is not 60 cubic inches.
That was the displacement of only one rotor. It did generate 180 HP
and not 250 HP at 5000 RPM. Best BSFC was slightly less than .5 at
90 HP and 3500 RPM.

Paul Lamar
Jeremy Kinney wrote:

Dear Mr. Lamar,

Thank you for your critique of the National Air and Space Museum's Stephen
F. Udvar-Hazy Center at Dulles International Airport.  We hope that you
enjoyed your visit.

Please provide the correct specifications and your sources for them on the
attached Wright Aeronautical Wankel rotary engine label and the museum
would be glad to make the appropriate corrections.  Any additional
information you could send the museum on the history and technical features
of the Wankel aeronautical rotary engines would be of great help in our
documenting the engine.

If you have any other information that would make our other engine labels
more accurate, we would appreciate that as well.  We do not feel that they
are "typically...all wrong," but we welcome the opportunity to have the
most up-to-date information to our visitors.

As for the aircraft collections on display at the NASM, could you suggest
any aircraft that the museum does need to collect and/or have on display,
which would better reflect the history of aviation?

The NASM has a Wright Aeronautical R-3350 turbocompound (TC) engine on
display at the downtown museum in the air transportation gallery.
Unfortunately, we do not have another or it would be a prime candidate for
display at Udvar-Hazy.  During your visit, I hoped you did not miss the
R-3350 power recovery turbine, a major component of the TC engine, in the
aircraft propulsion systems case.

If you have any specific suggestions on how the engine display can be
rearranged, we would be glad to hear those as well.

Once again, thank you for your interest in the collections on display at
the National Air and Space Museum's Udvar-Hazy Center.

Sincerely,

Dr. Jeremy R. Kinney
Curator, Aeronautics Division
National Air and Space Museum
Smithsonian Institution
P.O. Box 37012
NASM, RM 3304, MRC 312
Washington, D.C.  20013-7012
E-mail:  (kinneyj@nasm.si.edu)

*********************************************************************************************************************************************************
Wright Aeronautical Wankel RC2-60 Rotary

German engineer Felix Wankel conceived his rotary engine in 1924 and
patented it in 1936.  It featured a triangular cam connected to the drive
shaft that acted like the pistons in a four-stroke cycle engine.  Wankel
submitted his designs to the German automobile company NSU.  Wankel and NSU
built and tested the first rotary in early 1957.  The engine saw its
greatest success in Mazda automobiles, but has also been used in
motorcycles, go-karts, air-conditioner systems, and aircraft.

Wright Aeronautical adapted three RC2-60 automobile engines for flight
testing in 1970.  The one displayed here was probably the first Wankel
engine to power an airplane, a Cessna Cardinal.  Another powered a Lockheed
Q-Star to demonstrate feasibility, performance, and quiet flight.  The
third powered a Hughes TH-55 helicopter.

Gift of the Paterson Museum

Type:        rotary piston, liquid cooled
Power rating:     134?kW (180?hp) at 5,000 rpm
Displacement:     1 L (120 cu in) 
Weight:      108 kg (237 lb)
Manufacturer:     Wright Aeronautical Div., Curtiss-Wright Corp.,
             Wood-Ridge, N.J.

*************************************************************************************
**************************************************************************************

Jeremy, There are lots of SAE papers on the CW development of the rotary engine.
Attached is a list.

Also here is a list of pertinent books. The Library of Congress should 
have these books.

* The definitive book on the rotary is simply called "ROTARY ENGINE" 
by Kenichi Yamamoto published by Toyo Kogyo Co. Ltd. (Mazda) in 
1969. This is a highly technical book chronicling the development of 
the wankel by Mazda. Kenichi is an engineer and has risen to  CEO of 
Mazda. 

* This book on the rotary is also  called "ROTARY ENGINE" 
by Kenichi Yamamoto published by Sankaido Co. Ltd. 
Second edition published in 1981. This is an updated version of 
the first "ROTARY ENGINE" book. Confusing eh what? This book
has a much greater emphasis on emissions.

* Another technical book on the Wankel rotary engine is; "The Wankel 
RC Engine Design and Performance" by R.F.Ansdale Published by A.S. 
Barnes & Company Lib of Cong 69-18692

* The Wankel engine Design Development Application by Jan P. Norbye. 
Chilton Book Company. ISBN 0-8019-5591-2 Published in 1971. A little 
history and results of the Wankel engine development by NSU, 
Mercedes, Mazda and others and some results of work by 
Curtiss-Wright.  Also some history on all rotary engines. Not as 
technical as I would like but not bad. 

There is a company in called Hayes Rotary Engineering that is currently rebuilding
Two CW RC2-60 engines. http://www.hayesrotary.com/

Here are a few pictures of parts used in those engines. 
It would be best to contact Hayes and get more pictures while the engines are still
disassembled.

BTW the rotary engine is hardly dead. It lives on in the Mazda RX8 at your local
Mazda dealership.

Paul Lamar
 
The Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2004 All world wide rights reserved.

James Bell sent me this web page.

This is from http://www.monito.com I think.


                 The Wankel Rotary Engine: Books, Papers, Articles 

    
Books 

    Richard F. Ansdale, The Wankel RC Engine, A.S. Barnes & Co., South Brunswick &
New York, ISBN 0-498-0741-2,
    LOC 69-18692, 1st American ed. 1969. 

    John Ball, Mazda RX-7: The First Generation, 1979-1985 Sept. 1990. Goldstar
Enterprises, ISBN 0929214048. 200+
    pages hardcover, BW illustr. 

    Max Bentele, Engine Revolutions: The Autobiography of Max Bentele, 1991, ISBN
1-56091-081-X. SAE Order Num.
    R-109, $19. Engineer with Curtiss-Wright 1956-1964. 

    Scott Corbett, What About the Wankel Engine? Four Winds Press, 1974. Dewey
TL210.7.C67. For Juvenile readers. 

    Harris Edward Dark, The Wankel Rotary Engine Indiana Univ. Press, ISBN
0-253-19021-5, LOC 73-16676, Dewey
    629.2'504, June 1974. 

    Nicholas Faith, Wankel: The Story of the Revolutionary Rotary Engine Stein & Day,
Aug. 1975 0812817192. 

    Nicholas Faith, Wankel: The Curious Story behind the Revolutionary Rotary Engine
Allen and Unwin, London 1975.
    ISBN 0046500014. 

    Paul Frère and Nino Vaccarella, The Targa Florio Route: Experts Meet the RX-7,
1989, D.R.H. Edition, Tokyo, Japan.
    ISBN 4-7518-0072-8. 

    Karl E. Ludvigsen, Wankel Engines A to Z , Ludvigsen Publications, ISBN
0913646016. 

    John Matras, Illustrated Mazda Buyer's Guide . Motorbooks International, ISBN
0-87938-842-0, LOC 93-32133,
    Dewey 629.222'2-dc20, 1994. 

    John Matras, Sports Car Color History: Mazda RX-7 . Motorbooks International,
1994. review 

    Jujiro Matsuda (1875-1952), Seventy Years of Factory Life . Autobiography of
founder of Mazda. 

    Jan P. Norbye, The Wankel Engine: Design, Development, Applications, Chilton Book
Co., Philadelphia, New York and
    London, ISBN 0-8019-5591-2, 1st ed. Sep. 1971. Also Bailey Bros and Swinfen, ISBM
0561001375. 

    Kris Perkins, Norton's Rotaries Osprey Publishing, London, ISBN 1855321-81-5,
1991. 

    Ted Pipe, Principles of the Wankel Engine Bobs-Merrill Co. Oct. 1974, ISBN
0672210835. 

    Toyo Kogyo Co. History of Research and Development on Mazda Rotary Engine Toyo
Kogyo Co., Ltd., Hiroshima,
    1972. 

    Jack K. Yamaguchi, RX-7, The New Mazda RX-7 and Mazda Rotary Engine Sports Cars,
St. Martin's Press, LOC
    85-62339, 1st ed. 1985. ISBN 0312694563. 

    Jack K. Yamaguchi, RX-7, Mazda's Legendary Sports Car: Plus Racing and Winning -
Le Mans and IMSA GTO -
    1991, ISBN 4-947659-01-7. 1992. 

    Toyo Kogyo Rotary Engine, Toyo Kogyo, Hiroshima, booklet, 1971. 

    Kenichi Yamamoto, Rotary Engine, Sankaido Co. Ltd. 1st ed. 1981. [republication
of 71 booklet or of some 69 edition?] 



Society of Automotive Engineers Technical Papers 

S-236 
    R.T. Hurley, "Rotating Combustion Engine", March 1960. 
Trans. V. 69, p. 194 

    M. Bentele, "Curtiss-Wright's Developments on Rotating Combustion Engines", 1961. 
Trans. V. 69, p. 641-649 

    R.T. Hurley and M. Bentele, "Rotating Combustion Engine", 1961. 

S-288-A 
    W.G. Froede, "The NSU-Wankel Rotating Combustion Engine", Jan. 1961. 

S-348 
    M. Bentele, "Further Developments in Rotating Combustion Engines at
Curtiss-Wright", March 1962. 

886-D 
    C. Jones, "The Curtiss-Wright Rotating Combustion Engine Today", Aug. 1964. 

650722 
    W.G. Froede, "The Rotary Engine of the NSU Spider", Oct. 1965. 
Trans. V. 74 
    C. Jones, "New Rotating Combustion Powerplant Developments", 1965. 

670194 
    C. Jones, "The Rotating Combustion Engine - Compact Lightweight Power for
Aircraft", Nov. 1966. 

680461 
    W.G. Froede, "NSU's Double Bank Production Rotary Engine", May 1968. 
Trans. V. 76 N. 5 
    C. Jones, "Rotary Combustion Engine is as Neat and Trim as the Aircraft Turbine",
May 1968. 

680752 
    H. Keller, "Small Wankel Engines", Sept. 1968. 

700074 
    D.E. Cole and C. Jones, "Reduction of Emissions from the Curtiss-Wright Rotary
Combustion Engine with an Exhaust
    Reactor", Jan. 1970. 

700079 
    K. Yamamoto and T. Kuroda, "Toyo Kogyo's Research and Development on Major Rotary
Engine Problems", Jan. 1970.

700273 
    W.T. Figart, R.L. Leisenring, and W.B. Silvestri, "The RC Engine - A New Approach
to Reduce Costs", April 1970. 

1970 IME Paper 
    F. Feller, "The 2-Stage Rotary Engine - A New Concept in Diesel Power", Jan.
1971. 

710581 
    K. Yamamoto and H. Tado, "The Rotary Engines of Yanmar Outboard Motors", June
1971. 

710582 
    C. Jones and H. Lamping, "Curtiss-Wright's Development Status of the Stratified
Charge Rotating Combustion
    Engine", June 1971. 

720466 
    K. Yamamoto and T. Kuroda, "Improvements of the Rotary Engine with Charge Cooled
Rotor", May 1972. 

720467 
    T.W. Rogers, W. Lemke, J. Lefevre, and T. Ohzawa, "Lubrication Studies in Rotary
Combustion Engines", May 1972. 

720468 
    C. Jones, "A Survey of Curtiss-Wright's 1958-1971 Rotating Combustion Engine
Technological Developments", May
    1972. 
SAE 
    Kenichi Yamamoto, "Rotary Engine", June 1981 ISBN 9997341171. 

840460 
    Charles Jones, "Advanced Development of Rotary Stratified Charge 750 and 1500 HP
Military Multi-Fuel Engines at
    Curtiss-Wright", SAE Int. Congr. and Expo., Detroit, Feb. 27 - March 2, 1984. 

850034 
    R. Sierens and W. Verdonck, "Development of a Natural Gas Stratified Charge
Rotary Engine", SAE Int. Cong. and
    Expo, Detroit, Feb. 25 - Mar. 1, 1985, 13 pp. Audi NSU engine tested by Univ. of
Gent (Ghent?). 

860563 
    T.N. Chen, R.N. Alford, and S.S. Kim, "Detonation Characteristics of Industrial
Natural Gas Rotary Engines", SAE Int.
    Congr. and Expo., Detroit MI, Feb. 24, 1986. Describes Ingersoll-Rand IR-2500
engine. 

860615 
    T.I-P. Shih, Song-Lin (Jason) Yang and Harold .J. Schock Jr., "A Two-Dimensional
Numerical Study of the Flow
    Inside the Combustion Chamber of a Motored Rotary Engine". 1986. 

870448 
    Steven R. King, "Durability of Natural Gas Fueled Rotary Engines", SAE Int. Cong.
and Expo. Detroit, Feb. 23, 1987. 

SAE 
    Rotary Engine Design, 1989, ISBN 0-89883-695-6. Partial contents include Noise
and Vibration Reduction
    Technology for REs, Combustion Model for Homogeneous Charge Natural Gas REs,
Engineering Study of Rotary-Vee
    Engine Concept, and Strain Measurements in a RE Housing. SAE Order Number SP-768,
Price $42 ($35 member).
    SAE Int. Cong. and Expo., Detroit, Feb. 27 - Mar. 3, 1989. 

890671 
    J. Abraham and F.V. Bracco, "Comparison of Computed and Measured Pressure in a
Premixed-Charge Natural Gas
    Fueled Rotary Engine", SAE Int. Cong. and Expo., Detroit, Feb. 27 - Mar. 3, 1989. 

910893 
    F. Hamady, T. Stuecken, and H. Schock, "Experimental Analysis of Blowby and Flow
Field Interaction in a Motored
    Rotary Engine", Feb 1991, appears in SAE Transactions, V. 100, Journal of
Engines, Section 3, pp. 1416-1442. 
Feb. 1991 

    T. Morita, F. Hamady, T. Stuecken, Craig W. Somerton, and H. Schock, "Fuel Air
Mixing Visualization in a Motored
    Rotary Engine Assembly", SAE International Congress and Exposition, Feb. 1991. 

920302 
    Kenji Morimoto, Takafumi Teramoto, and Yuji Takamori, "Combustion Characteristics
in Hydrogen Fueled Rotary
    Engine". 

920309 
    Ritsuharu Shimizu, Tomoo Tadokoro, Toru Nakanishi, and Junichi Funamoto, "Mazda
4-Rotor Rotary Engine for the
    Le Mans 24-Hour Endurance Race". 


SP-1108 
    , 1992, Passenger Car Engine Lubricants, ISBN 1-56091-303-7, $55 (member $45).
Paper on "The Development of
    Lubricating Oils for Rotary Racing Engines". 

950093 
    Development of a unique fuel flexible engine, Part I: Engine design and physical
model 

950449 
    Rotor shaft bearing analysis for selected Rand CamsT engine configurations 

950452 
    High speed electronic fuel injection for direct injected rotary engine (also in
SP-1108). 

950453 
    "A review and thermodynamic analysis of a rotary-vee internal combustion engine". 

950454 
    "The characteristics of fuel consumption and exhaust emissions of the side
exhaust port rotary engine" (also in
    SP-1108). 

951769 
    "Wankel engine for hybrid powertrain" (also contained in Proceedings of 1995
Small Engine Technology Conference,
    ISBN 56091-673-7, $99 ($79 member) SAE Order Num. P-292). 

SP-1108 
    1995, Futuristic Concepts in Engines and Components, ISBN 1-56091-679-6, $55
(member $44). Papers on "High
    Speed Electronic Fuel Injection for Direct Injected Rotary Engine" and "The
Characteristics of Fuel Consumption and
    Exhaust Emissions of the Side Exhaust Port Rotary Engine". 


960232 
    Paul A Salanki, James S. Wallace, (University of Toronto), "Evaluation of the
Hydrogen-Fueled Rotary Engine for
    Hybrid Vehicle Applications". 

The SAE has a home page which completely supercedes a dull previous page. 


Other Technical Papers 

    J. Abraham and V. Magi, "Effects of Ignition Cavity Flows on the Performance of a
Stratified Charge Rotary Engine:
    Initial 3-D Predictions", University of Minnesota Supercomputer Institute
Research Report UMSI 93/262, Dec. 1993,
    submitted for publication. 

    Othmar Baier, [A mathematical treatment of the RCE], VDI report No. 45, 1960. 

    C. DellaCorte, H.E. Sliney, and M.S. Bogdanski, "Tribological [gloss] and
Mechanical Comparison of Sintered and
    HIPped PM212: High Temperature Self-Lubricating Composites, Lubr. Eng. v 48, Nov.
1993, pp 877-885 (Also NASA
    TM-105379). (Soc. Trib. and Lubr. Eng. best paper award 1994). 

    L. Dodge, D. Naegeli, "Hydrogen-air mixing evaluation in reciprocating engines",
NREL/TP--425-6346. 1994-06-01. 

    S.R. King, "Endurance Testing of a Natural Gas-Fueled Rotary Engine, Final Report
March 1985-January 1987", Gas
    Research Institute, Chicago, GRI-87/0050; PB87-215703. [20,000 hours]. 

    T.A. Kuchnicki, "Gas Rotary Engine Technology Development, Final Report
April-December 1990", Southwest
    Research Institute, San Antonio, Texas, for Gas Research Institute, Chicago,
GRI-91/0096; NTIS# PB91-182402. [oil
    cooled]. 

    J.R. Mack, "Development of Natural Gas Rotary Engines: Final Report June 1986 -
June 1991", Gas Research Institute,
    Chicago, GR191-0290; PB92-129665. [John Deere]. 

    Paul S. Moller, "Evaluation of Thermal Barrier and PS-200 Self-Lubricating
Coatings in an Air-Cooled Rotary
    Engine", Mar. 1995, LEW-15356, NASA Lewis Research Center, Cleveland, Ohio 44135. 

    A. Nagao, H. Ohzeki, and Y. Niura, "Present Status and Future View of Rotary
Engines", in Automotive Engine
    Alternatives, edited by Robert L. Evans, Plenum Press, New York, 1987, pp.
183-202. 

    J.W. Walker and R.E. Mount, "The Stratified Charge Rotary Engine", in Automotive
Engine Alternatives, edited by
    Robert L. Evans, Plenum Press, New York, 1987, pp. 203-218. [turbocharged]. 



Film and Video 

 "The NSU/Wankel engine - the principle" IWF 1968, NSU Auto Union AG (Neckarsulm), 16
mm film, 6 1/2 minutes. 


Patents 

Classifications: 

    Rotary 
        Class 409, Subclass 142: Means to mill epitrochoidal shape. 
        Engine: 415 
           Exhaust Reactor Separator: 60/902* 
           Exhaust Treatment: 60/901* 
           Plural Rigidly Related Blade: 415/198.1+ 
           Plural Rigidly Related Blade Sets: 415/198.1+ 
        Expansible Chamber Devices: 418 
        Piston Engine: 123/200 
    Rotor 
        Motor: 60 
           Internal Combustion: 123 
           Rotary Expansible Chamber: 418 
    Wankel Engine: 418/61.2 

5,423,298 
    Rotary Internal Combustion Engine 

5,433,176 
    Rotary-Reciprocal Combustion Engine 

5,433,179 
    Rotary Engine with Variable Compression 

5,441,018 
    Internal combustion rotary piston engine 

4,728,488 
    Carbide / Flouride / Silver Self-Lubricating Composites [for housings] 




Folio copy	03/26/98 at 11:32


EI/Compendex / Find THESAURUS ROTARY COMBUSTION ENGINES and SINCE 1/1/93
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28)	Rachel, T. et al. "Analysis of frictional power losses associated with the
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29)	Abraham, J. et al. "3-D computations of premixed-charge natural gas
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38)	Hamai, Yuji et al. "Two-dimensional computer simulation of unsteady flow
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39)	Muroki, Takumi et al. "Study of an outline of combustion for a Direct
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40)	Matsuura, Kenji et al. "Measurement of the relative behavior of a rotary
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43)	Matsuda, Ikuo et al. "New technology employed for the latest 13B-rotary
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45)	Chouinard, E. et al. "Airflow visualization and LDV measurements in a
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46)	Hamady, F. et al. "Airflow visualization and LDV measurements in a motored
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52)	Lee, C. M. et al. "ESTIMATION OF INSTANTANEOUS HEAT TRANSFER COEFFICIENTS
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72)	Goddard, David M. et al. "GRAPHITE/MAGNESIUM COMPOSITES FOR ADVANCED
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82)	Knoll, J. et al. "DYNAMIC ANALYSIS OF ROTARY COMBUSTION ENGINE SEALS."
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87)	Willis, Edward A. et al. "OVERVIEW OF GENERAL AVIATION PROPULSION RESEARCH
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100) Yamamoto, Kenichi et al. "DEVELOPMENT ON EXHAUST EMISSIONS AND FUEL
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	SAB PREPRINTS. SAB Prepr n 780417 for Meet Feb 27-Mar 3 1978 22 p.

101) Leucht, Philip M. "ROTARY ENGINE EXPERIMENTAL MEASUREMENTS USING
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	LUBRICATION ENGINEERING. Lubr Eng v 34 n 2 Feb 1978 p 85-93.

102) Blair, G. P. et al. "UNSTEADY GAS FLOW BEHAVIOUR IN A CHARGE COOLED
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103) Kumar, M. L. et al. "IMPROVED ROTARY MECHANISM ENGINE."
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105) Matsuura, Kenji et al. "RELATIVE BEHAVIOR OF A ROTARY ENGINE APEX SEAL TO
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115) McCuiston, F. D. Jr. "ANALYTICAL EVALUATION OF THE EFFECT OF LEAKAGE ON
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122) Girardi, Vincent J. et al. "BROACHING THE EPITROCHOIDAL FORM."
TECHNICAL PAPER - SOCIETY OF MANUFACTURING ENGINEERS. SME Tech Pap n
MM73-657 for Meet Nov 14-15 1973, 18 p.

123) Ellis, John "EPITROCHOID LININGS AND SEALS."
TECHNICAL PAPER - SOCIETY OF MANUFACTURING ENGINEERS. SME Tech Pap n
MM73-652 for Meet Nov 14-15 1973, 19 p.

124) Bauer, A. F. "TRANSPLANT COAT IN ROTARY ENGINES."
TECHNICAL PAPER - SOCIETY OF MANUFACTURING ENGINEERS. SME Tech Pap n
MM73-651 for Meet Nov 14-15 1973, 17 p.

125) Jones, Charles "DEVELOPMENT OF THE ROTARY ENGINE."
TECHNICAL PAPER - SOCIETY OF MANUFACTURING ENGINEERS. SME Tech Pap n
MM73-650 for Meet Nov 14-15 1973, 30 p.

126) Rodgers, J. J. et al. "ROTARY ENGINE TEST TO EVALUATE LUBRICANTS FOR
CONTROL OF ROTOR DEPOSITS."
	SAB PREPRINTS. SAB Prepr n 740159 for Meet Feb 25-Mar 1 1974, 12 p.

127) Hartley, John "ROTARY ENGINE MANUFACTURE."
	ENGINEERING MATERIALS AND DESIGN. Eng Mater Des v 18 n 5 Jun 1974 p
	21-23.

128) Pedersen, Harry "GRINDING THE ROTARY ENGINE TROCHOIDAL BORE."
AMERICAN SOCIETY OF MECHANICAL ENGINEERS (PAPER). ASME Pap n 74-DE-ll
for Meet Apr 1-4 1974, 7 p.

129) Kobayashi, Akira "VANE-MOTOR WITH RHOMBIC LINK DRIVE."
BULLETIN OF THE JSME. Bull JSME v 16 n 101 Nov 1973 p 1693-1701.

130) Statkus, F. D. et al. "DESIGN, CALCULATIONS, AND TESTING OF A NEW ROTARY
	INTERNAL COMBUSTION ENGINE."
	AMERICAN SOCIETY OF MECHANICAL ENGINEERS (PAPER). ASME Pap n
	73-WA/DE-21 for Meet Nov 11-15 1973 9 p.

131) Anon "KAROL ROTARY ENGINE UNDERGOING U. K. DEVELOPMENT."
MOTOR SHIP. Mot Ship v 54 n 639 Oct 1973 p 343.

132) Edwards, Geoff (Ed. ) "ROTARY ENGINE BIDS TO CHALLENGE PISTON POWER."
DESIGN ENGINEERING (LONDON). Des Eng (London) Mar 1973 p 41-44.

133) Russell, J. A. et al. "AIR-COOLED ROTARY ENGINES - A FUELS AND LUBRICANTS
STUDY."
	SAB PREPRINTS. SAE Prepr n 730046 for Meet Jan 8-12 1973 8 p.

134) Prasse, H. F. et al. "CRITICAL ANALYSIS OF THE ROTARY ENGINE SEALING
	PROBLEM."
	SAB PREPRINTS. SAB Prepr n 730118 for Meet Jan 8-12 1973 16 p.

135) Clarke, J. M. et al. "NEW CLASS OF ROTARY PISTON MACHINE SUITABLE FOR
	COMPRESSORS, PUMPS AND INTERNAL COMBUSTION ENGINES."
	JOURNAL OF POLYMER SCIENCE, MACROMOLECULAR REVIEWS. Inst Mech Eng
	(London), Proc v 186 Pap n 62 for Meet Oct 18 1972 p 743-753.

136) Ward, Harry M. III et al. "OUTBOARD MARINE CORP'S PRODUCTION ROTARY
	COMBUSTION SNOWMOBILE ENGINE."
	SAB PREPRINTS. SAB Prepr n 730119 for Meet Jan 8-12 1973 13 p.

137) Behling, R. D. et al. "LUBRICANT AND FUEL REQUIREMENTS AND GENERAL
	PERFORMANCE DATA OF WANKEL ROTARY PISTON ENGINES."
	SAB PREPRINTS. SAB Prepr n 730048 for Meet Jan 8-12 1973 11 p.

138) Eberle, Meinrad K. et al. "EVALUATION OF THE POTENTIAL PERFORMANCE GAIN
	FROM LEAKAGE REDUCTION IN ROTARY ENGINES."
	SAB PREPRINTS. SAB Prepr n 730117 for Meet Jan 8-12 1973 8 p.

139) Yamamoto, K. et al. "COMBUSTION CHARACTERISTICS ON ROTARY ENGINES."
MEDICAL AND BIOLOGICAL ENGINEERING. SAB Pap n 720357 for Meet Apr 5
1972, 8 p.

140) Yamaoka, Jokiro et al. "IMPROVEMENTS OF THE ROTARY ENGINE WITH A CHARGE
COOLED ROTOR."
TELECOMMUNICATIONS AND RADIO ENGINEERING (ENGLISH TRANSLATION OF
ELEKTROSVYAZ AND RADIOTEKHNIKA). SAB Pap 720466 for meet May 22-26
1972, 20 p.

141) FELLER F "2- stage rotary engine. A new concept in diesel power"
J Automot Eng v 2 n 1 Jan 1971 p 9-14.
142) JONES C et al. "Curtiss- Wright's development status of the stratified
charge rotating combustion engines"
SAB Pap 710582 for meeting June 7-11 1971, 20 p.