Originally posted by Sancho:
Aw, no BD5-J? Curious, how much of a price and performance difference is there between the jet and prop model?
Several. For the guts and techy stuff, goto
www.bd-micro.com and read about each.
In a nutshell (and largely to annoy AKDejaVu hehee)...
BD-5 B Reciprocating engine 2stroke Hirth most popular though some use Rotax's or even heavy, 4 -cyclinder Hondas. Most speeds in these setups are well below 200, though varies greatly on engine and cooling system.
BD-5 T What Im building, uses a rebuilt T-62 turbine (Quantum makes these). Best compromise...benefits of a prop and benefits of a turbine/jet...less fussy about heat and no need to invent a way to cool a mid-engine design. Scoops and inlets cause drag. Also, this system is much faster than the B since you have eliminated a cooling system (scoops, water/radiators, etc). Top speed in these are around 250 or more.
BD-5 J Jet. Suck, bang, blow baby. Requires the smaller wing (17ft versus the B and T's 21.5) and a much more rugged fueslage for the G loads. Last I heard, they put out 300 pounds of thrust and toss about at 350 mph. Big enemy...fuel consumption. You can carry 36 gallons and she'll eat that up in under an hour. Again, some newer engines coming to market to make these guys stay up longer. You'll see these guys flying for the Bud Lite Air Force (
www.blaf.com) and a few other airshow performers.
Yes Id love to J, but for cross country flyng, Id be climbing, cruise and descending every 30 minutes. My bladder aint THAT small!
If you are really pondering building an airplane, there are many. The RV series are fantastic (
www.vansaircraft.com) and I confess my favorite site to gaze at is
www.viper-aircraft.com where they have a 2 seat, fighter-looking jet kit available, made of carbon fiber and such composites.
Rip...if you are thinking of building, be sure to visit the Arlington Airshow up your way, or Oshkosh!
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Paul J. BusiereAces High Arena handle: BD5Pilot
http://bd5.checksix.net BD-5 "T" (TurboProp) 90% complete, first flight in 2001 (We hope!)