Search found 22 matches
- Sat Jan 09, 2010 5:30 am
- Forum: Ramjet forum
- Topic: Ducted Ramjet that is meant to fly.
- Replies: 35
- Views: 53408
Re: Ducted Ramjet that is meant to fly.
special epoxy...what type of epoxy?
- Thu Oct 09, 2008 12:41 am
- Forum: Ramjet forum
- Topic: Flight SFRJ Paraffin Development
- Replies: 9
- Views: 12415
Re: Flight SFRJ Paraffin Development
CP/CG is overly stable still (tube fin effect helps)flies great straight as an arrow. Just don't try it with low thrust ejector motor.
Better sober up before ya build...these things can hurt ya!
Better sober up before ya build...these things can hurt ya!
- Wed Oct 08, 2008 3:40 pm
- Forum: Ramjet forum
- Topic: Flight SFRJ Paraffin Development
- Replies: 9
- Views: 12415
Re: Flight SFRJ Paraffin Development
Ready for early ejector only flight test.
- Wed Sep 24, 2008 4:35 am
- Forum: Ramjet forum
- Topic: Flight SFRJ Paraffin Development
- Replies: 9
- Views: 12415
Re: Flight SFRJ Paraffin Development
Just received my nozzles today. Busy tomorrow will post pics Thursday/Friday. Nozzles are thin - graphite CNC turned from my CAD files. I'll be coating the tube ID with ceramic paint and gluing nozzles in with ceramic glue Thurs and Friday. Static test first flight (ejector test) this weekend. Dual ...
- Sat Sep 20, 2008 1:42 pm
- Forum: Ramjet forum
- Topic: Flight SFRJ Paraffin Development
- Replies: 9
- Views: 12415
Re: Flight SFRJ Paraffin Development
Thanks James,
Sorry about that.
Sorry about that.
- Sat Sep 20, 2008 1:23 pm
- Forum: Ramjet forum
- Topic: Flight SFRJ Paraffin Development
- Replies: 9
- Views: 12415
Re: Flight SFRJ Paraffin Development
Thanks Jerry, Impressive air-breathing projects going on down under. Been following University of Queensland projects for years. What a coincidence you should mention sorbitol. I've been cooking with it lately....sorbitol, paraffin, carbon black. Hope to light my candles next year. I plan to post a ...
- Sat Sep 20, 2008 1:07 am
- Forum: Ramjet forum
- Topic: Flight SFRJ Paraffin Development
- Replies: 9
- Views: 12415
Flight SFRJ Paraffin Development
Starting small with ducted rocket testing ejector augmentation. Waiting to install graphite nozzle.
- Sat Sep 13, 2008 11:29 pm
- Forum: Ramjet forum
- Topic: Ducted Ramjet that is meant to fly.
- Replies: 35
- Views: 53408
Re: Ducted Ramjet that is meant to fly.
Fill it with a water based saline solution allowing for evaporation cooling through small holes in the inlet spike. Providing it is hollow or drilled out interior.
- Wed Sep 10, 2008 11:29 pm
- Forum: Ramjet forum
- Topic: WII German Pabst ramjets Information
- Replies: 1
- Views: 6200
WII German Pabst ramjets Information
Searching for information on German Pabst ramjets used on Focke-Wulf Ta283. These would have been subsonic.
- Wed Sep 03, 2008 3:51 am
- Forum: Ramjet forum
- Topic: Bomarc ramjet replica going on a rocket
- Replies: 5
- Views: 8975
Re: Bomarc ramjet replica going on a rocket
James,
Please keep me informed on progress. I'm very interested in seeing how this project develops and flies.
Doug
Please keep me informed on progress. I'm very interested in seeing how this project develops and flies.
Doug
- Mon Sep 01, 2008 9:01 pm
- Forum: Ramjet forum
- Topic: Bomarc ramjet replica going on a rocket
- Replies: 5
- Views: 8975
Re: Bomarc ramjet replica going on a rocket
SCRAM tech would be well beyond hobbyist capability. Ramjet is alone challenging at mach plus velocities. One would need to obtain a velocity great enough to carry model into space after engine burnout. Altitude depends on burn time and velocity obtained during that burn time. For a ramjet flying a ...
- Mon Sep 01, 2008 6:05 pm
- Forum: Ramjet forum
- Topic: Bomarc ramjet replica going on a rocket
- Replies: 5
- Views: 8975
Re: Bomarc ramjet replica going on a rocket
Sounds awesome would like to see some pics? Unable to access video, So what size is this ramjet diameter? Have you flown it yet?
- Wed Apr 02, 2008 5:09 am
- Forum: Ramjet forum
- Topic: Basic Diffuser Design Assistance
- Replies: 1
- Views: 6065
Basic Diffuser Design Assistance
Are there some basic KISS ratios, calculations, or formula's to aid in estimating the relationship between diffuser expansion (inlet to outlet CS area ratio) and degree, percent or ratio of pressure (density) rise, temp rise, velocity decrease, across the diffuser section? I've searched the internet...
- Sat Mar 29, 2008 3:43 pm
- Forum: Ramjet forum
- Topic: ramjet vehicle performance estimation tool
- Replies: 17
- Views: 26655
- Sat Mar 29, 2008 12:56 pm
- Forum: Ramjet forum
- Topic: Ducted Ejector Ram Rocket Solid Fuel
- Replies: 7
- Views: 14109
Decided to eat this elephant one bite at a time. First project will be an air augmented rocket utilizing fanno flow (flow through a constant duct). Similar to the old Estes Augie II only scaled up and tweak some. The larger diameter duct tube will be longer with only a few inches of a conical cone c...