superhornet59 wrote:you could just scale up the X-43A and MAKE room.
Oh, absolutely. Given enough time and millions, why not? I am sure it will be done sooner or later.
superhornet59 wrote:6 g's. now you tell me thats not exciting, if you didnt faint youll surely soil yourself
I would become
soil. At 6G, I'd be at about... er... 1,300 lbs.
superhornet59 wrote:Scramjet designs have been around since the 60's, but nobody tested them. so scramjet powered aircaft have never flew before, no big deal seeing as they were constantly being tested in labs.
there MUST be blueprints out there somewhere. mabye they havent been tested, or mabye theyve undergone lab tests but never had a "field test", but they should stil be there sumwhere.
Matt, sure, the blueprints are certainly 'out there somewhere'. NASA has them, and the Air Force has them, and people like General Dynamics have them. Ask around and I am sure that sooner or later you will find someone who will think, "well, I've just got to help this young man" and make a copy for you.
But, the blueprints are the least of your worries. A bigger problem is getting the thing up to operational speed. Have you considered the 'mother ship' that will take your craft up to Mach 3 or so, where you can begin to hope that a scramjet will perhaps start functioning if you're lucky?
Have you considered the fuel supply system? Now, that part is the most interesting. Like in diesel, what ignites the fuel in the scramjet is pressure. Only, the pressure in a scramjet is way, way out of the diesel range. In fact, I haven't got the faintest idea on how they pump hydrogen into the combustion zone, so high is the pressure there. (BTW the pressure is one of the reasons the scramjet works. At such horrific pressures, hydrogen and oxygen molecules are pushed so close together that combustion can take place even though the gas speeds are supersonic.)
superhornet59 wrote:doesnt a scramjet cound as a detonation engine? when something detonates, it burns faster ten the speed of sound, so for the flame to "stay inside" the ramjet, musnt it be detonating because the exhaust is supersonic?
No. The speed is not the important parameter, but the way the combustion happens. Detonation is a supersonic combustion event in the atmospheric-pressure medium. What does the job is a supersonic pressure wave, or the detonation wave, which slams the fuel and the oxidant. So, what happens is a shock-pulse.
In a scramjet, the pressure is constant, as in a turbojet. Fuel is injected into the space between two shockwaves, in which air is at extreme pressure and extreme temperature, but both are constant, so there is no detonation and no pulsation.
superhornet59 wrote: im actualy working on a VTOL project. Ive started designing a 1/4 scale F-16. due to its smaller size you have to lay down inside of it ratherthe sit, but thats cool. itll have a rotating rear nozzle like that of the F35, but if i dont have the power to rotate it ill have another solution. itll have a main FJ44-1AP engine (approx 2000 lb thrust) and a FJX-2 (700 lb thrust) which is in the front for the hovering part. the engines arent available to the ameature aircraft category just yet but theyre working on getting them there.
Great! Keep us posted. I love VTOL machinery.