M500 build log

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ganuganu
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Re: M500 build log

Post by ganuganu » Fri Nov 16, 2012 6:18 pm

metiz wrote:
ganuganu wrote:i have a question here why you didnt prefer to add conical augmenter to your engine. In an research paper by nasa says that conical Augs provide better performance than cylindrical.
They are conical, the photo angle makes it look like it's cylindrical
oh iam sorry for that.

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Re: M500 build log

Post by ace_fedde » Wed Jan 02, 2013 11:38 am

I found some pump and nozzles. Did you already compute or guess :P how much fuel it is going to need?

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Re: M500 build log

Post by metiz » Wed Jan 02, 2013 12:54 pm

Not yet....well, a lot at least:P I can make some educated guesses
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Re: M500 build log

Post by ace_fedde » Wed Jan 02, 2013 5:10 pm

Well let's guess:

M500 = 500 pounds of thrust (hopefully :D ), TSFC = 2,5 >> 1250 pounds of fuel per hour? Oooops :shock:

That's about 10 liters a minute. Pumps can handle that, can your wallet?? :lol:

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Re: M500 build log

Post by metiz » Wed Jan 02, 2013 10:42 pm

ace_fedde wrote:Well let's guess:

M500 = 500 pounds of thrust (hopefully :D ), TSFC = 2,5 >> 1250 pounds of fuel per hour? Oooops :shock:

That's about 10 liters a minute. Pumps can handle that, can your wallet?? :lol:

Fedde
10 litres a minute isn't that bad actually. I could use a combo of petrol and oil to cut the cost

*edit* seen the newyear M40 run btw?:P
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Re: M500 build log

Post by metiz » Tue Feb 05, 2013 6:02 pm

2nd augmenter done!

Image
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Re: M500 build log

Post by ace_fedde » Tue Feb 05, 2013 8:55 pm

Nice pic's. Better than porn!! :D
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Re: M500 build log

Post by metiz » Mon Feb 11, 2013 4:04 pm

number 3. Pics don't get resized by the forum, apparently. right-click the images and hit "view image" to see the whole thing

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Re: M500 build log

Post by Mike Everman » Sat Feb 16, 2013 5:46 am

Yikes! That is some beautiful work. Quite manly motor!
I'll enjoy going back through this thread. Been kind of busy! Was there a debate about centering the intakes in the augmentors?
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Re: M500 build log

Post by metiz » Sat Feb 16, 2013 11:49 am

Hey Mike,

About the intakes: I guess so. I'll have to chop of a "V" shape from all the ejectors to make them fit properly on the recifier, with the intakes blowing down the centre. I'm planning on doing that later today so if you have anything to say about that, like, don't do it, please hurry :P
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Re: M500 build log

Post by Mike Everman » Sat Feb 16, 2013 3:31 pm

I don't know. I think since its not possible to center it and get yourself a nice neat toroidal vortex in there, the next best thing is (let's call it) a "rolling eddy", so I'd say just trim the flare and get the two diameters tangent. This one might have been a candidate for one big augmentor around the whole mess.
I fear that head plate is going to be the first thing to fail. A little bit of doming or coning is in order when it does.
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Re: M500 build log

Post by metiz » Sat Feb 16, 2013 4:35 pm

I've been adding reinforcements to the engine (pics comming) and I'll also reinforce the endcap to prevent buckling. The rectifier has been made with 1.5mm steel so I'm taking a chance by not reinforcing it
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Re: M500 build log

Post by metiz » Sat Feb 16, 2013 4:40 pm

This will be the ideal situation when it's done. I COULD extend the flares when it's done to make one big one
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Re: M500 build log

Post by Mike Everman » Sat Feb 16, 2013 7:13 pm

Cool. When you post the next pics, if you could reduce them to 1024x768 it would be better. Better than huge, anyway. I fear I'll be able to hear this one in Santa Barbara.
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Re: M500 build log

Post by metiz » Mon Feb 18, 2013 5:45 pm

All the ejectors finished and mounted to the engine. The pipes are welded to the rectifier only at the front, clamps will hold them at the back.
Attachments
100_3838.JPG
100_3840.JPG
100_3842.JPG
Some crude tailpipe reinorcements
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