Search found 16 matches
- Sat May 24, 2014 6:31 pm
- Forum: Valveless pulsejet forum
- Topic: M500 build log
- Replies: 161
- Views: 158281
Re: M500 build log
Just wondering, do you happen to have any plans on this? It just looks awesome.
- Wed May 14, 2014 7:31 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
No. scaling engines doesn't work like that. You can't just increase all dims x 2 and expect twice the thrust (or even a running engine) A nice ballpark to double thrust is to take a running engine and scale the diameter of the combustion chamber x1.4 (and then design the rest of the engine accordin...
- Wed May 14, 2014 5:43 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
On thing, if I wanted to scale up an engines size, would the thrust scale up too. For example, if I were to get plans for an engine that has 10 lb of thrust and I decide to make it 10x the size the plans state, would the thrust increase to 100 lb?
- Wed May 14, 2014 3:37 pm
- Forum: Valveless pulsejet forum
- Topic: "Thunderchine" 55 lb thrust pulsejet plans
- Replies: 142
- Views: 124433
Re: "Thunderchine" 55 lb thrust pulsejet plans
Hey, I was checking out the plans for this engine but I don't understand one thing, what's the splitter for and where does it go? Thanks I strongly suggest not building this engine. The tollerances are VERY tight and the slightest mistake will cause your engine to malfunction. Even if you build it ...
- Wed May 14, 2014 12:11 pm
- Forum: Valveless pulsejet forum
- Topic: "Thunderchine" 55 lb thrust pulsejet plans
- Replies: 142
- Views: 124433
Re: "Thunderchine" 55 lb thrust pulsejet plans
Hey, I was checking out the plans for this engine but I don't understand one thing, what's the splitter for and where does it go? Thanks
- Wed May 14, 2014 2:53 am
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
Hey, tufty I've been reading what you sent me over and over but I still don't understand what it's trying to say. It's just so complex. Could you explain it to me in simpler words please.
- Tue May 13, 2014 4:08 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
Thanks man, for everything.
- Tue May 13, 2014 11:28 am
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
I'm fairly certain Eric has moved to pulsejetengines.com (that's where his youtube channel is pointing these days, at least), so that's probably a decent way of getting in touch with him. He's not been online here for a good while. Ok I'll try to contact him there. In the mean time, I have one ques...
- Mon May 12, 2014 7:57 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
So wait, are they more fuel efficient than the Chinese design? Well, the models made, tuned, tested and run by SNECMA got a TSFC of ~1.8. That's pretty damn good, and it's for an engine designed to put out the sort of thrust you want. The "Chinese" design will get you TSFC around 2, and you'll have...
- Mon May 12, 2014 3:34 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
When talking pulsejets, "fuel efficiency" should always be in "ironic" quotes. As far as fuel efficiency on big engines goes, SNECMA's "Ecrivisse" was ~100lb thrust with a (heavily tested / proven) TSFC of 1.8 or so. I'm fairly certain there's some engineering drawings for the Ecrivisse lying about...
- Sun May 11, 2014 11:12 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
Check the looking for plans section. Im sure you will find what you need there. Alternatively search for thunderchine or lockwood or m40... Which 12 lb engine are you going to build? I am starting with Larry's original short lady just because it looked easy to build. I have a thread running documen...
- Sun May 11, 2014 11:09 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
Check the looking for plans section. Im sure you will find what you need there. Alternatively search for thunderchine or lockwood or m40... Which 12 lb engine are you going to build? I am starting with Larry's original short lady just because it looked easy to build. I have a thread running documen...
- Sun May 11, 2014 10:31 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
Ok, I'll start small with some 12lb thrust i found yesterday. Just one thing, do you happen to have the link for the 50 pound engines?sid_raptor wrote:Also i think its easier to start small....just to learn the ropes!
- Sun May 11, 2014 10:21 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
oh and take a look here. They are talking about smaller engines than what you are looking for but i think it will answer your questions about efficiency... http://www.pulse-jets.com/phpbb3/viewtopic.php?f=3&t=6312&p=74376&hilit=thunderchine#p74376 Ok thanks man. Ill check it out. Honestly, i still ...
- Sun May 11, 2014 7:36 pm
- Forum: Valveless pulsejet forum
- Topic: Most fuel efficient engine
- Replies: 25
- Views: 24731
Re: Most fuel efficient engine
Hello? Anybody there?