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The "Beast One": What doesn't kill you makes you stronger

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Scheny

Well-Known Member
Joined
Feb 26, 2019
Messages
314
Location
Vienna, Austria
This is the thread where I present the concept of the "Beast One". Unlike the title, it is the goal to create an economic BD-5 alike single seat jet which on the contrary to the BD-5 won't try to actually kill you.

The plane is not about re-inventing the wheel, nor to follow this stupid higher, faster, stronger philosophy. The only goal we have in mind is to be better! When you are bound to something as unefficient as a turbojet, the rest has to be even better to compensate. With the FLS Microjet (unchanged successor of the BD-5) and the JSX-2 there are already two competitors, but it goes without saying that there is room for improvement against a widowmaker and a flying Hershey-bar derived from a low-tech motorglider.

Passive Safety:
With the knowledge of carbon formula car specialists, the fuselage will be built to endure up to 30G frontal, while incorporating a 80cm composite crumplezone capable of handling impacts at almost landing speed. In addition, the fuselage is built in a way to reduce frontal collision loads by around 30% and incorporate a BRS which can be activated up to cruise speed.
Another relevant safety factor is a static stability unknown for such small aircraft, forgiving stall characteristics and an even lower landing speed than the JSX-2.

Aerodynamics:
Nobody can defy physics, but you can switch to state-of-the-art. We decided against unforgiving laminar profiles in favor for profiles which are an advancement over the proven NACA 64xxx, having 23% more lift at exactly the same drag (and even more forging stall characteristics). The profiles have been developed with help from Dr. Quabeck and the quasi-elliptical wing has outstanding slow-flight qualities while still being efficient for high cruising speeds. The tail is dimensioned bigger than comparable aircraft and meets the recomendations for jet-trainers. The fuselage is built to minimize wetted area and interference drag without risking flow detachment.

Key data:
The plane is built around a PBS TJ-100 engine putting out 1100N of force and pushing the 380kg MTOW to between <60kt (to fulfill CS-23) and an economy cruise speed of 200kt (top speed ~300kt). It will be built aerobatic capable with an ultimate rating of 14G but normal use is restricted to 6G for engine reasons.

More info to follow...
 
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