so ron youre planning on building an electric helicopter?
my idea (i have a lot of ideas) was to redirect thrust from a small jet engine through some pipes so it comes out of the end of the rotors and because its a tip jet there's no need to counteract torque
also ron how do you plan to...
thanks ron
do you know any sites where i can get my questions answered?
i just a have a couple more questions:
can tip jets be used to power a ducted fan?
ie. use thrust from a small jet, get the thrust to the end of the rotors and make it come from holes
the ducted fan doesn't have to...
thanks for the info fred
i agree with you that a single lift source is better because it saves the weight
a jet thrust maybe more complicated but the ducted fan setup will have increased weight and weight is the biggest problem for VTOL aircrafts
i was talking to a couple people about vtol...
can you just give an approximate figure for an engine with 2500lbf
are we looking at something over $40,000
for a jet thrust setup is the best way to copy the harrier design and have 4 ducts on the bottom of the craft?
also why do you say that it would be easier to have a ducted fan setup than...
ok i understand
how much will an engine producing about 2500lb of thrust cost?
are there any engines similar to this:
http://en.wikipedia.org/wiki/Rolls-Royce_RB.108
also how hot will the exhaust gases be?
would you also say that using jet thrust is a better option than a turboshaft...
well at the moment its just a group of us brainstorming about how this could be done, but if it turns out it is possible i don't see why we won't be able to start actually doing it apart from the financial problems that will arise
i would think a prototype alone would cost in the region of...
hey
i'm just running ideas by you and you seem to be coming up with some good ideas
and I am just glad people are replying to my questions
so run two turboshafts running 4 ducted fans? with that the engines alone will weigh about 500kg
(also i don't know if there will be enough space for 4...
yeah i figured as much that the blades will be too big for a duct
for the shape of the craft we were considering a using something aerodynamic
i had an idea of doing something like this:
http://www.smartfish.ch/index.cfm/fuseaction/show/path/1-2.htm
so danger are you saying we should...
i thought it was that but i just had to be sure
so danger do you agree that a turboshaft powering blades in a ducted fan is safer than normal jet thrust because of the hot gases coming out as thrust in a jet?
thanks for that russ
so if this was to be done you would have to use a turboshaft to power the blades
but this would be safer than a VTOL craft with jet thrust because the air coming from the ducted fan will be cool compared to the hot gases from a jet wouldn't it?
like wouldn't a harrier jump...
well I am glad you have enjoyed the conversation
im going to contact frd garvin and russ watters
should i just search for them on the forums with the names you provided?
i thought about that as well
but for a vtol craft it wouldn't be safe would it because won't it just melt the tarmac
i thought that ducted fans are the best option becuase the thrust coming out from them would be cool enough for you to land on something soft like grass
thats why id like to...