Search found 12 matches
- Wed Aug 17, 2005 10:16 pm
- Forum: Ramjet forum
- Topic: deLaval Nozzles for Small Ramjets?
- Replies: 29
- Views: 38183
re: deLaval Nozzles for Small Ramjets?
Larry has anyone used a deLaval nozzle in place of the 'pipe' in a 'snorkel' type Jam Jar..?? The 2.7 bar may be briefly available on expulsion and the deLaval may not interfere too much on inhalation.. I assume that the performance would be quite different to that of a conventional 'snorkel'... Che...
- Fri Jun 24, 2005 11:41 pm
- Forum: Valveless pulsejet forum
- Topic: Alternate Fuels
- Replies: 30
- Views: 23266
re: Alternate Fuels
Please do NOT make ammonia as a fuel..... Containment is difficult and the gas is so very soluble in water that it will dissolve in the tears on your eyeballs and the moisture lining the airways in your lungs... the ammonia solution will then destroy and remove those tissues.... IF you survive this ...
- Sat Jun 11, 2005 8:58 pm
- Forum: Off topic forum
- Topic: Message From Michael Stram
- Replies: 34
- Views: 44122
re: Message From Michael Stram
Excellent Luc, You have just done the Forum members a great service, I hope that they and indeed all viewers are properly appreciative....
Cheers db..........
Cheers db..........
- Thu Jun 09, 2005 6:30 am
- Forum: Off topic forum
- Topic: We're not in Kansas anymore
- Replies: 262
- Views: 129988
re: We're not in Kansas anymore
Opinion, opinion, opinion, its your right, your property, your's... Be happy if it gives you a feeling of confidence, enjoy...
However if questioned about your opinion and you feel "angry" then you are probably wrong... (simple isn't it...)
Cheers db....
However if questioned about your opinion and you feel "angry" then you are probably wrong... (simple isn't it...)
Cheers db....
- Thu Mar 31, 2005 4:08 am
- Forum: Rocket forum
- Topic: Question about nozzle throat area equation
- Replies: 4
- Views: 6429
re: Question about nozzle throat area equation
Larry... beautifully explained.. thankyou..... db...
- Sat Mar 05, 2005 6:27 am
- Forum: Off topic forum
- Topic: Tiny turbine
- Replies: 60
- Views: 47540
Re: Tiny turbine
Hi Steve, Your quote ".......It just boggles the mind!......" well it dosn't boggle my mind... its just plain wrong. You can't have refrigeration involving heated gases without a heat exchanger between the compression stage, (or in this case a 'combustion') stage and the expansion stage (or in this ...
- Wed Mar 02, 2005 7:25 am
- Forum: Off topic forum
- Topic: Tiny turbine
- Replies: 60
- Views: 47540
Re: Tiny turbine
Hi Franscisco,
Look -> -> -> -> ...... http://www.pulse-jets.com/phpbb2/viewto ... highlight=
I hope this helps.. db.....
Look -> -> -> -> ...... http://www.pulse-jets.com/phpbb2/viewto ... highlight=
I hope this helps.. db.....
- Sun Feb 27, 2005 10:28 pm
- Forum: Off topic forum
- Topic: Marks Problems....Again : o(
- Replies: 20
- Views: 14691
Re: Vortex Mechanics
Hi Mark, ... or who ever you are !!! Run Ad-Aware and spybot; also uninstall then re-install your antivirus program with all settings on 'default' then make <www.pulse-jets.com> an 'ignor' item...
You may be suprised to find that you are not who you thought you were..
........ db..
You may be suprised to find that you are not who you thought you were..
........ db..
- Fri Feb 25, 2005 6:53 am
- Forum: Tools and Construction
- Topic: Proposed Combined Fuel Tube / Starting Air Tube for FWE
- Replies: 30
- Views: 28401
Re: Proposed Combined Fuel Tube / Starting Air Tube for FWE
Hi Eric, Google up 'helicoidal flow' and the associated 'precession'... you may view gas movement in a different light... You may even see why Bruno could not get a satisfactory 'choked funnel effect' when the BVCP developement team, bent the central tube connecting the two combustion chambers, in t...
- Thu Feb 10, 2005 10:23 pm
- Forum: Off topic forum
- Topic: Message From Michael Stram
- Replies: 34
- Views: 44122
Re: Message From Michael Stram
Hi Micheal, Prior art exists.... the list starts with 'Marconnet' 1909; 'Schubert' 1944; 'Myers' 1946... I know that forum members could provide many more instances.. I am sure you are relying on protection using the detail, but it hard for you to survive a challenge when the 'principle' pre-exists....
- Wed Feb 09, 2005 2:49 am
- Forum: Valveless pulsejet forum
- Topic: Hot little linear fwe-lockwood!
- Replies: 46
- Views: 37304
Re: Hot little linear fwe-lockwood!
No progressive critics to my assumed boundary layer thickness distribution? Weird...[/quote] Whats with this Boundary Layer being an insulator ?? If I am correct in my understanding there can be no boundary layer without movement of gases along the exhaust tube (in an axial direction).. Eric says 2/...
- Fri Feb 04, 2005 9:09 pm
- Forum: Valved pulsejet forum
- Topic: A necessary criterion for pulsating combustion
- Replies: 18
- Views: 17716
Re: A necessary criterion for pulsating combustion
Hi Forrest, I am confused by your formular and somewhat out of my depth.. However can you explain how this formular differs from one that would describe "steady state' combustion within a pipe of known dimensions. I am always cautious of the use of an, approximation sign instead of = sign. Thanks to...