 | EXPERIMENTAL Rotary Internal Combustion Engines These are variant rotary vane engines implemented as 2 separate, axially coupled stages: an intake/compression stage & a combustion/expansion stage. The primary design objective is improved fuel efficiency. The engines are coupled to a starter motor which doubles as a dynamometer. Independent combustion & expansion ratios over 20:1 can be set to accommodate various fuels & for attaining the highest efficiency (currently ~10% & rising steadily as seals are improved). Wear surfaces & seals are graphite-on-steel whose miraculous lubricity & wear properties allow sustained operation without cooling or oil! Intake & exhaust profiles are smooth & practically continuous, reducing manifold effects & exhaust noise. Holding the vanes 'out' with solenoids provides an efficient means of throttling (by adjusting their duty cycle) since the rotors spin freely without any pumping losses. This makes it easy to gang stages & use them only when needed. Every power stroke (1 per revolution) occurs at maximum intake volume (no partial aspiration losses). I've been tinkering with ICEs for over 20 years in my spare time. These designs represent thousands of man-hours & a graveyard of previous prototypes. The program continues; 3 more models are currently on the drawing board. These ideas are offered with the hope that they may be inspirational & useful (or at least fun). Anyone interested is encouraged to build their own prototypes & to improve & apply these designs in any way that they see fit. -Dave |
 | Day 2 Countdown to the Comet # 2: Zuko's "fight" of justice Haven't you ever noticed how staged that fight with Zuko and Combustion man in the Western air temple is? I mean seriously, he's "conveniently" RIGHt there!!! So here we mocked them....Day 3 #'s 1 and 2 being uploaded tomorrow..it's late now! (but prepare yourself for finger puppets and matchmaking!!! introducing a new shipping!!!) Writte by: Me Starring: Jacqui and Jason as Zuko and Bob...I mean combustion man Ciao!!! |
 | Bruce Graybill & Friends Stage 7 Winfield Vol. 1 of 5 El Cumbanchero from a Five-volume video set shot 9/14/07 11:30 PM at Stage 7 in the Pecan Grove at the Walnut Valley Festival. Walk-on all acoustic improvisational set by Two-Time National Mandolin Champion Bruce Graybill with Scott Schmidt (2002 National Mandolin Champion), James McKinney (1982 National Banjo Champion), John Lowell (of Weber fine acoustic Instruments), and Marvin Gruenbaum (of Kansas City Symphony and Spontaneous Combustion). Several of these musicians met and played together for the first time (for about 30 minutes) a few hours before they met to do this set. Marvin and James walked on during the set after being delivered by security (from the campground Radio area where they were performing, so they had not even met the other players (except Bruce). Tunes and arrangements were decided on the fly while on stage yielding a truly improvisational music session. Video shot Mike Whalen who kindly prepared it for our use. |
 | Bruce Graybill & Friends Stage 7 Winfield Vol. 2 of 5 Sweet Georgia Brown for Five-volume video set shot 9/14/07 11:30 PM at Stage 7 in the Pecan Grove at the Walnut Valley Festival. Walk-on all acoustic improvisational set by Two-Time National Mandolin Champion Bruce Graybill with Scott Schmidt (2002 National Mandolin Champion), James McKinney (1982 National Banjo Champion), John Lowell (of Weber fine acoustic Instruments), and Marvin Gruenbaum (of Kansas City Symphony and Spontaneous Combustion). Several of these musicians met and played together for the first time (for about 30 minutes) a few hours before they met to do this set. Marvin and James walked on during the set after being delivered by security (from the campground Radio area where they were performing, so they had not even met the other players (except Bruce). Tunes and arrangements were decided on the fly while on stage yielding a truly improvisational music session. Video shot Mike Whalen who kindly prepared it for our use. |
 | Bruce Graybill & Friends Stage 7 Winfield Vol. 3 of 5 Minor Swing from a Five-volume video set shot 9/14/07 11:30 PM at Stage 7 in the Pecan Grove at the Walnut Valley Festival. Walk-on all acoustic improvisational set by Two-Time National Mandolin Champion Bruce Graybill with Scott Schmidt (2002 National Mandolin Champion), James McKinney (1982 National Banjo Champion), John Lowell (of Weber fine acoustic Instruments), and Marvin Gruenbaum (of Kansas City Symphony and Spontaneous Combustion). Several of these musicians met and played together for the first time (for about 30 minutes) a few hours before they met to do this set. Marvin and James walked on during the set after being delivered by security (from the campground Radio area where they were performing, so they had not even met the other players (except Bruce). Tunes and arrangements were decided on the fly while on stage yielding a truly improvisational music session. Video shot Mike Whalen who kindly prepared it for our use. |
 | Bruce Graybill & Friends Stage 7 Winfield Vol. 4 of 5 Can't Keep from Tryin, from Five-volume video set shot 9/14/07 11:30 PM at Stage 7 in the Pecan Grove at the Walnut Valley Festival. Walk-on all acoustic improvisational set by Two-Time National Mandolin Champion Bruce Graybill with Scott Schmidt (2002 National Mandolin Champion), James McKinney (1982 National Banjo Champion), John Lowell (of Weber fine acoustic Instruments), and Marvin Gruenbaum (of Kansas City Symphony and Spontaneous Combustion). Several of these musicians met and played together for the first time (for about 30 minutes) a few hours before they met to do this set. Marvin and James walked on during the set after being delivered by security (from the campground Radio area where they were performing, so they had not even met the other players (except Bruce). Tunes and arrangements were decided on the fly while on stage yielding a truly improvisational music session. Video shot Mike Whalen who kindly prepared it for our use. |
 | 3rd-Stage VFX Showreel (Preview) with Budjunky Music ! This is a preview of my VFX Showreel the real reel, with more an better work is coming soon ! I'am waiting for some finals !!! |
 | Experimental Rotary Internal Combustion Engines These are variant rotary vane engines implemented as 2 separate, axially coupled stages: an intake/compression stage & a combustion/expansion stage. The primary design objective is improved fuel efficiency. The engines are coupled to a starter motor which doubles as a dynamometer. Independent combustion & expansion ratios over 20:1 can be set to accommodate various fuels & for attaining the highest efficiency (currently ~10% & rising steadily as seals are improved). Wear surfaces & seals are graphite-on-steel whose miraculous lubricity & wear properties allow sustained operation without cooling or oil! Intake & exhaust profiles are smooth & practically continuous, reducing manifold effects & exhaust noise. Holding the vanes 'out' with solenoids provides an efficient means of throttling (by adjusting their duty cycle) since the rotors spin freely without any pumping losses. This makes it easy to gang stages & use them only when needed. Every power stroke (1 per revolution) occurs at maximum intake volume (no partial aspiration losses). I've been tinkering with ICEs for over 20 years in my spare time. These designs represent thousands of man-hours & a graveyard of previous prototypes. The program continues; 3 more models are currently on the drawing board. These ideas are offered with the hope that they may be inspirational & useful (or at least fun). Anyone interested is encouraged to build their own prototypes & to improve & apply these designs in any way that they see fit. -Dave |
 | Falcon 1 - Third Flight - Hi Res (From www.spacex.com) NOTE: The original video can be downloaded from http://www.spacex.com On August 3, 2008, Space Exploration Technologies Corporation (SpaceX) attempted their first operational flight of the Falcon 1 rocket - the third flight of the Falcon 1. The first flight failed due to a leak in a fuel line, and the second failed due to an anomaly during stage separation which caused the spent first stage to collide with the engine bell of the second stage. This resulted in oscillations due to fuel slosh from which the guidance computer was unable to recover. According to SpaceX, this problem has since been resolved. As such, there was much optimism prior to the third (and first operational) flight of Falcon 1, and we all hoped for a successful orbital flight. Unfortunately, flight 3 also resulted in loss of vehicle and, since this was an operation flight, payload. The payload consisted of the Trailblazer satellite for the US Air Force, the NanoSail-D and PREsat nanosatellites for NASA and a space burial payload for Celestis. The analysis of the flight determined that the cause of failure was due to the new Merlin 1-C engine which was used for the first time on this flight. The previous two flights used the Merlin 1-A, which is an ablatively cooled engine. The Merlin 1-C uses a regeneratively cooled engine (an engine which uses the propellants as a coolant). This results in longer fuel lines leading the the combustion chamber, and a longer burn-out time for the 1-C. After main engine cut-off (MECO), these longer fuel lines allowed some of the unburnt propellant to enter the combustion chamber, which then combusted and produced enough impulse to overcome the impulse delivered by the pneumatic pushers (which are used to literally push the spent first stage away from the second) at separation. The end result of this was that the first stage came back into the second stage, resulting in catastrophic failure. I assume this is due to the second stage failing to ignite due to separation sensors, etc, though this is just speculation on my part. SpaceX have announced that the problem has been overcome, and we all look forward to the fourth (and hopefully successful) flight of Falcon 1 in September (tentative date). Good luck SpaceX! We are all pulling for you. Onwards and upwards! |
 | Thermojet Stage 1 This is my new thermo jet, i forgot to get the napkins off the combustion chamber and lol, yeah |
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![Don\](images/articles/thumbs/beachrainthumb.jpg "Don\")
