Search found 9 matches
- Thu May 10, 2007 8:27 pm
- Forum: Valved pulsejet forum
- Topic: WITH OR WIHOUT VALVES, WHAT IS MORE EFFICIENT
- Replies: 26
- Views: 37066
Same time is a little difficult to me understand the mind of all that you write, and I am sure that I can not explain correctly too but in all cases I will try to be as the same level. berquistj@peoplepc.com Actually it's your basic fuel cell! No, it isn’t Methane has good properties as fuel and N...
- Thu May 10, 2007 5:29 pm
- Forum: Valved pulsejet forum
- Topic: WITH OR WIHOUT VALVES, WHAT IS MORE EFFICIENT
- Replies: 26
- Views: 37066
Well, the weekend is very near, enjoy together. About boomstick I prefer the Vulcan GAU-8/A 30 mm that you can see: http://www.sirviper.com/fighters/a-10/6.jpg This cannon can fire 4200 rounds per minute / 60 = 70 rounds per second 1 round = 0.2 kg of propellant 70r x 0.2kg = 14 kg propellant / seco...
- Wed May 09, 2007 1:54 am
- Forum: Valved pulsejet forum
- Topic: WITH OR WIHOUT VALVES, WHAT IS MORE EFFICIENT
- Replies: 26
- Views: 37066
I think that increase the pressure chamber is one way to optimize the SFC, but is very difficult to find any literature about the exhaust diameter pipe and the effects to reduce the diameter, you can see many times pulsejets that have problems to start but I only have seem one that explode by a deto...
- Tue May 08, 2007 5:55 pm
- Forum: Valved pulsejet forum
- Topic: WITH OR WIHOUT VALVES, WHAT IS MORE EFFICIENT
- Replies: 26
- Views: 37066
my target is with valves, but I was not sure. I will begin with a new age of high pressure pulsejets with high air flow valves. will be very funny to work in the edge of defregration to detaonartion transition. Why I think in this way. Pipe diameter with 2.4 inch diameter = 2.89 inch ^2 Speed 156 mi...
- Mon May 07, 2007 11:06 pm
- Forum: Valved pulsejet forum
- Topic: WITH OR WIHOUT VALVES, WHAT IS MORE EFFICIENT
- Replies: 26
- Views: 37066
But do you think that all aviations companies that invest a lot of money to develop new engines technologies as Pulse Detonator Engine, with rotary valves or rotary chambers need in all cases to fill the combustion or detonation chamber with fresh air using normally axial compressor with turbine or ...
- Mon May 07, 2007 3:58 pm
- Forum: Valved pulsejet forum
- Topic: WITH OR WIHOUT VALVES, WHAT IS MORE EFFICIENT
- Replies: 26
- Views: 37066
Well, I have been the last years working with solid and liquid rocket engines, for me the efficient is easy = ISP specific impulse, when you work with engines that use air as oxidizer same things changes. In a rocket two factors are very important. 1º Propellant 2º Chamber pressure With solid fuel...
- Mon May 07, 2007 10:25 am
- Forum: Valved pulsejet forum
- Topic: WITH OR WIHOUT VALVES, WHAT IS MORE EFFICIENT
- Replies: 26
- Views: 37066
- Sun May 06, 2007 6:12 pm
- Forum: Valved pulsejet forum
- Topic: WITH OR WIHOUT VALVES, WHAT IS MORE EFFICIENT
- Replies: 26
- Views: 37066
WITH OR WIHOUT VALVES, WHAT IS MORE EFFICIENT
I would like to know what is the most efficient engine as thrust / weight ratio and SFC.
Running in a plane at 300 km/h
Pulsejet with valves
Pulsejets valve less
Pressure jets
any more engines or ideas ? Turbines not possible.
Regards
Running in a plane at 300 km/h
Pulsejet with valves
Pulsejets valve less
Pressure jets
any more engines or ideas ? Turbines not possible.
Regards
- Sun May 06, 2007 5:49 pm
- Forum: Rocket forum
- Topic: whats the best idea for rocket
- Replies: 20
- Views: 23948
Dear youngrocketkid20, the first of all, the Rocket is more, a lot of more dangerous that Pulse Jets, I have been working with rocket propellants many years, I know the Nakka’s work very well. Forget the Hydrogen Peroxide, to work with HP you need to distiller ( danger ), you need to store in spec...