Purpose Engines Products Web Marketing Friends jetZILLA ezine
The chief aim of man
is to glorify God
and enjoy Him forever.
- Westminster Catechism, 1648
 
Another aim of man is to build things
that run very HOT and very LOUD
and move really, really FAST !
- Larry Cottrill, 2005
 

Reynstodyne Fokus 'Short Lady' valveless pulsejet engine
running on propane vapor   Photo Copyright 2004 Steve Bukowsky
 
HEAR a valved pulsejet start and run (classic Dynajet, compressed air startup):


(Total time = 30 sec)
... COMPARE a valveless pulsejet start and run (Elektra I, electric blower startup):


(Total time = 45 sec)
 
Corporate Statement of Purpose
To the glory of God, we will endeavor...
To advance the state of the art of air-breathing reaction powerplant design toward greater simplicity, reliability, economy, maintainability and ease of use;
To offer the serious hobbyist a new standard of safe, reliable, efficient and affordable small jet propulsion systems;
To profit fairly, reasonably and in good conscience from our creativity and effort;
To provide a dedicated portion of earned profit to selected organizations which labor to better the lives of the needy, heal the sick, relieve the oppressed and set free the enslaved;
And to generate from our efforts a significant Return on Investment to every person who has materially contributed to the success and advancement of this enterprise.
To these ends, we hereby resolve and commit ourselves
 TO  BUILD  ENGINES 
for  the  New  Millenium  of  Flight 
 


Fo Mi Chin II(TM) engine prototype closeup - Photo Copyright 2005 Larry Cottrill
Fo Mi Chin II Valveless Pulsejet combustion
chamber & intake detail - Photo Copyright 2005 Larry Cottrill
   _________________________________________________________

    C O T T R I L L - D E S I G N E D   E N G I N E S . . .
   _________________________________________________________
Reynstodyne Fokus FWE 'Lady Anne Boleyn'

    - Type: Reynst Breathing Valveless Pulsejet
    - Evaluation: SUCCESSFUL [to be independently verified]
    - Performance: 2.6 lb (1.3 kg) static thrust, propane vapor fueled
    - Features: Easy starting, good running, throttleable
    - Design disclosure: August 2006
    - Prototype: Independently built & tested
Original post in Kenneth Moller's Valveless Pulsejet Forum
First run post (scroll down to mid-page post by 'James D')
Reynstodyne Fokus FWE 'Lady Guinevere'

    - Type: Quasi-Concentric Reynst Breathing Valveless Pulsejet
    - Evaluation: UNKNOWN [to be independently built & tested]
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable
    - Design disclosure: February 2006
    - Prototype: To be independently built & tested
Original post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne 'Lock Reynst Monster'

    - Type: Fully Concentric Reynst Breathing Valveless Pulsejet
    - Evaluation: UNKNOWN [to be independently built & tested]
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, low cost
    - Design disclosure: February 2005
    - Prototype: To be independently built & tested
Original post in Kenneth Moller's Valveless Pulsejet Forum
Dimension drawing post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne Whale Shark

    - Type: Reynst Breathing Valveless Pulsejet
    - Evaluation: UNKNOWN [to be independently built & tested]
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, low cost, extremely easy construction
    - Design disclosure: November 2005
    - Prototype: To be independently built & tested
Original post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne Fokus FWE V 'Thin Lady'

    - Type: Reynst Breathing Valveless Pulsejet
    - Evaluation: UNKNOWN [to be independently built and tested]
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, low cost, thin profile, light weight
    - Design disclosure: November 2005
    - Prototype: To be independently built & tested
Original post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne Fokus FWE IV 'Smooth Lady'

    - Type: Quasi-Concentric Reynst Breathing Valveless Pulsejet
    - Evaluation: SUCCESSFUL [to be independently verified]
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, low cost, thin profile, light weight
    - Design disclosure: August 2005
    - Prototype: Built & tested in-house September 2005
Original post in Kenneth Moller's Valveless Pulsejet Forum
First run post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne Elektra IV 'Black Princess'

    - Type: Reynst Breathing Valveless Pulsejet
    - Evaluation: UNKNOWN [currently under in-house testing]
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, low cost, thin profile, light weight
    - Design disclosure: July 2005
    - Prototype: Built & tested in-house 2005
Original post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne FMC II
  (easy construction version of Fo Mi Chin II)


    - Type: Quasi-Concentric Reynst Breathing Valveless Pulsejet
    - Evaluation: UNKNOWN [to be independently built & tested]
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, low cost, thin profile, light weight
    - Design disclosure: July 2005
    - Prototype: To be independently built & tested
Original post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne Fokus FWE III 'Sveldt Lady'

    - Type: Quasi-Concentric Reynst Breathing Focused Wave Valveless Pulsejet
    - Evaluation: SUCCESSFUL, independently verified
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, low cost, thin profile
    - Design disclosure: May 2005
    - Prototype: To be independently built & tested 2005
Original post in Kenneth Moller's Valveless Pulsejet Forum
Other related threads from the Valveless Pulsejet Forum:
Another (Crazy?) Idea for Engine Kits
FWE III Pulse Jet kit Construction
Reynstodyne Fokus 'French Skirted Lady'

    - Type: Reynst Breathing Augmented Focused Wave Valveless Pulsejet
    - Evaluation: UNSUCCESSFUL [unable to achieve self-sustained operation]
    - Performance: UNKNOWN
    - Features: Integral skirt type thrust augmentor
    - Design disclosure: April 2005
    - Prototype: Built in-house April 2005, independently tested April 2005, Mike Everman
Original post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne Fo Mi Chin Type II

    - Type: Quasi-Concentric Reynst Breathing 'Pressure Can' Valveless Pulsejet
    - Evaluation: SUCCESSFUL, independently verified
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, low cost, thin profile, very light weight [15.3 ounces]
    - Design disclosure: April 2005
    - Prototype: Built in-house, independently tested April 2005, Bruno Ogorelec
Original post in Kenneth Moller's Valveless Pulsejet Forum
First run post in Kenneth Moller's Valveless Pulsejet Forum
'Death of Fo Mi Chin' post in Valveless Pulsejet Forum
Reynstodyne Henri Prototype

    - Type: Reynst Breathing Quasi-Concentric Valveless Pulsejet
    - Evaluation: UNKNOWN [currently under in-house testing]
    - Performance: UNKNOWN
    - Features: Compact, low cost, thin profile, light weight
    - Design disclosure: April 2005
    - Prototype: Built & tested in-house April 2005
Original post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne Fokus 'Short Lady'

    - Type: Reynst Breathing Focused Wave Valveless Pulsejet
    - Evaluation: SUCCESSFUL, independently verified
    - Performance: Easy starting, good running
    - Features: Easy starting, good running, throttleable, low cost, light weight
    - Design disclosure: 2004
    - Prototype: Independently built & tested 2004, Steve Bukowsky
Construction Page 1
Construction Page 2 & Testing
Original post in Kenneth Moller's Valveless Pulsejet Forum
First run post in Kenneth Moller's Valveless Pulsejet Forum
More independent developments from the Valveless Pulsejet Forum:
Stainless FWE with small intake runs at -3F!
New FWE on the block
Successful FWE Run With Video
A new propane line, Larry you better sit down for this :D
Some Fairly Nice New FWE Pics
New Set of Linear FWE Plans
Type07 FWE
Another Classic FWE Built & Run
Short Lady FWE Build!
Reynstodyne Fo Mi Chin Prototype

    - Type: Reynst Breathing 'Pressure Can' Valveless Pulsejet
    - Evaluation: MODERATELY SUCCESSFUL
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, low cost, large overall length [1.2 metres]
    - Design disclosure: 2004
    - Prototype: Built in-house 2004, tested in-house 2005
Original post in Kenneth Moller's Valveless Pulsejet Forum
First run post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne Elektra II 'Five Dollar Pulsejet'

    - Type: Reynst Breathing Ultra-Low-Cost Valveless Pulsejet
    - Evaluation: SUCCESSFUL
    - Performance: UNKNOWN
    - Features: Easy starting, good running, throttleable, easy construction, very low cost
    - Design disclosure: 2004
    - Prototype: Built & tested in-house 2004
Original post in Kenneth Moller's Valveless Pulsejet Forum
First run post in Kenneth Moller's Valveless Pulsejet Forum
Reynstodyne Elektra I 'Five Dollar Pulsejet'

    - Type: Reynst Breathing Ultra-Low-Cost Wave Valveless Pulsejet
    - Evaluation: MODERATELY SUCCESSFUL, independently verified
    - Performance: LOW THRUST
    - Features: Easy starting, good running, throttleable, easy construction, very low cost
    - Design disclosure: 2004
    - Prototype: Independently built & tested 2004, Steve Bukowsky
Construction Page
Test Journal Page
Original post in Kenneth Moller's Valveless Pulsejet Forum
First run post in Kenneth Moller's Valveless Pulsejet Forum
'Maggie Muggs' No-Weld Low-Speed Ramjet

    - Type: No-Weld Bonded-Construction Ramjet
    - Evaluation: SUCCESSFUL, independently verified
    - Performance: UNKNOWN
    - Features: No-weld construction, good running, throttleable, very light weight [10.5 ounces]
    - Design disclosed: 2003
    - Prototype: Built in-house 2003 - Independently built & tested May 2005, Ben Koopman
Construction Page 1
Construction Page 2
Test Firing Page [Page 3]
Original post in Kenneth Moller's Ramjet Forum [old forums]
First run post in Kenneth Moller's Ramjet Forum
SFOA Ball Bearing Valve Pulsejet

    - Type: Poppet Valve Pulsejet
    - Evaluation: UNKNOWN [construction incomplete]
    - Performance: UNKNOWN
    - Features: Easy valve maintenance, low cost
    - Design disclosed: 2002
    - Prototype: Under construction
Construction Page
Tiny Myers Valveless Pulsejet

    - Type: Myers Type Valveless Pulsejet
    - Evaluation: UNSUCCESSFUL [unable to achieve self-sustained operation]
    - Performance: UNKNOWN
    - Features: Extreme simplicity, low cost
    - Design disclosed: 2002
    - Prototype: Built & tested in-house 2002
First run post in Kenneth Moller's Valveless Pulsejet Forum [old forums]
Reynstodyne Shark Tiny Valveless Pulsejet

    - Type: Reynst Breathing Valveless Pulsejet
    - Evaluation: UNSUCCESSFUL [unable to achieve self-sustained operation]
    - Performance: UNKNOWN
    - Features: Simplicity, low cost
    - Design disclosed: 2002
    - Prototype: Built & tested in-house 2002
Construction Article - jetZILLA Online Magazine
Synchrodyne Valveless Pulsejet

    - Type: Synchronized Pressure Reflection Valveless Pulsejet
    - Evaluation: UNSUCCESSFUL [unable to achieve self-sustained operation]
    - Performance: UNKNOWN
    - Features: Simplicity, low cost
    - Design disclosed: 2001
    - Prototype: Built & tested in-house 2001
Construction Page
Test Journal Page
Pulsodyne Tiny Valveless Pulsejet

    - Type: Flow Rectification Valveless Pulsejet
    - Evaluation: UNSUCCESSFUL [unable to achieve self-sustained operation]
    - Performance: UNKNOWN
    - Features: Simplicity, low cost
    - Design disclosed: 2001
    - Prototype: Built & tested in-house 2001
Cyclodyne Cyclical-Flow Engine

    - Type: Constant-Combustion Cyclical-Flow Jet Engine
    - Evaluation: UNKNOWN [construction incomplete]
    - Performance: UNKNOWN
    - Features: Easy maintenance, low cost
    - Design disclosed: 2001
    - Prototype: Construction on hold
Rejected by NASA!



Digital mini-poster: Actually, I Am a Rocket Scientist [Steve Bukowsky's Focused Wave Engine prototype] - image Copyright 2004 Cottrill Cyclodyne Corporation
Poster 6 in the series 'International Year of the Valveless Pulsejet'
Photo Copyright 2005 Cottrill Cyclodyne Corporation
   ______________________________________________________________

    O U R   O W N   P R O D U C T S . . .
   ______________________________________________________________
Full-Color Frameable Posters:
International Year of the Valveless Pulsejet 11x17 Mini-Posters -
Red hot, full-color images of the world's most unusual jet propulsion engines:
    - Focused Wave valveless pulsejet
    - Bill Hinote's mighty Kentfield engine
    - Marten Klein's KP-T series engines
    - Larry Cottrill's "five dollar pulsejets"
Click here for complete product descriptions & photos!



Larry Cottrill with Cyclodyne(TM) engine prototype parts - Photo Copyright 2003 Cottrill Cyclodyne Corporation
Larry Cottrill, Founder, President and Director of Product Development
Photo Copyright 2003 Cottrill Cyclodyne Corporation
   ______________________________________________________________

    W E B   M A R K E T I N G   T O O L S . . .
   ______________________________________________________________
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   _________________________________________________________

    F R I E N D S . . .
   _________________________________________________________
Bruce Tharpe Engineering   - Pulsejet model aircraft plans, etc.
ModelFlight - United Kingdom   - No. 1 online magazine for model flyers
pulse-jets.com forums   - Kenneth Moller's superb jet forums
Jim Russell Designs   316 SW 5th Street, Des Moines, IA 50309   515-244-5808
        - Metal sculpture, furniture design, jewelry
Ackelson Sheet Metal Inc   201 1st St E, Altoona, IA 50009   515-967-4674
        - Custom metal fabrication
   _________________________________________________________

"To God Alone be the Glory"
- Johann Sebastian Bach 1685 - 1750



 
Corporate Main Office
11905 NE 110th Ave
Mingo,    IA 50168-9500
Contact:
  larrycottrill@cottrillcyclodyne.com

Page updated: 29 Sep 2006

Copyright 2006 Cottrill Cyclodyne Corporation
- All rights reserved -