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By: - 19th October 2015 at 16:59 Permalink - Edited 1st January 1970 at 01:00
what kind of "innovation" you suggest ?
me however think of something like this :3
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Aircraft mode.
Helicopter mode for VTOL'ing.
Store mode
By: - 19th October 2015 at 20:57 Permalink - Edited 1st January 1970 at 01:00
I don't know where your design comes from but LMs F35B is said to be carrying "dead weight" and these designs are carrying "dead weight", but unless we carry the means of vertical propulsion whilst in the horizontal we are stuck with long runways.
[ATTACH=CONFIG]241293[/ATTACH] UK MOD Novel Air Concept
[ATTACH=CONFIG]241294[/ATTACH] LM Various
By: - 19th October 2015 at 21:11 Permalink - Edited 1st January 1970 at 01:00
I don't know where your design comes from but LMs F35B is said to be carrying "dead weight" and these designs are carrying "dead weight", but unless we carry the means of vertical propulsion whilst in the horizontal we are stuck with long runways.[ATTACH=CONFIG]241293[/ATTACH] UK MOD Novel Air Concept
[ATTACH=CONFIG]241294[/ATTACH] LM Various
Well if one's goal is to minimize "dead weight" Which is associated VTOL machineries (rotors, ducted fans, 2nd engines) Then the optimum and most realistic solution would be that Tailsitter, like the UK-MOD Concept and LM-Sikorsky concept you posted.
The risk however is of course one cannot really do hover, at least not without any mechanism to deflect the propeller upward.
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My design above however was my own idea based on the old LHX "X-wing" rotorwing concept. Except that mine got its own separate wing thus no need to compromise airfoil for hover and forward flight.
By: - 20th October 2015 at 00:03 Permalink - Edited 1st January 1970 at 01:00
There are more sound aerodynamics in my toaster than on many of the innovations depicted above...
Should I write a proposal out of this?
By: - 20th October 2015 at 01:08 Permalink - Edited 1st January 1970 at 01:00
There are more sound aerodynamics in my toaster than on many of the innovations depicted above...Should I write a proposal out of this?
Looking forward for it.
By: - 20th October 2015 at 01:21 Permalink - Edited 1st January 1970 at 01:00
Birds still make our best efforts look like the work of a clumsy toddler.
By: - 20th October 2015 at 02:49 Permalink - Edited 1st January 1970 at 01:00
Hey, they had at least 150 million years to perfect their art!
By: - 20th October 2015 at 14:24 Permalink - Edited 1st January 1970 at 01:00
Their air intake isn't efficient at very high speeds either....
By: - 20th October 2015 at 14:39 Permalink - Edited 1st January 1970 at 01:00
Their air intake isn't efficient at very high speeds either....
Nor is their payload. Not sure about combat radius without refuelling but terribly susceptible to ground fire.
By: - 20th October 2015 at 15:02 Permalink - Edited 1st January 1970 at 01:00
ok, to slightly change tack on this then....
What are the benefits of the ducted fan and why have we not seen them on anything much up until now?
By: - 20th October 2015 at 16:57 Permalink - Edited 1st January 1970 at 01:00
https://en.wikipedia.org/wiki/Ducted_fan
A ducted fan is a propulsion arrangement whereby a mechanical fan, which is a type of propeller, is mounted within a cylindrical shroud or duct. The duct reduces losses in thrust from the tips of the props, and varying the cross-section of the duct allows the designer to advantageously affect the velocity and pressure of the airflow according to Bernoulli's Principle. Ducted fan propulsion is used in aircraft, airships, airboats, hovercraft and fan packs.[1]Ducted fans normally have more and shorter blades than propellers and thus can operate at higher rotational speeds.
By: - 20th October 2015 at 17:15 Permalink - Edited 1st January 1970 at 01:00
Their air intake isn't efficient at very high speeds either....
i think subsonic speed doesn't need those fancy multiple shock inlet as those in fighter jets.
By: - 21st October 2015 at 05:26 Permalink - Edited 1st January 1970 at 01:00
Not always as seen here; https://www.youtube.com/watch?v=N6nwzJL-scE
By: - 15th November 2015 at 18:03 Permalink - Edited 1st January 1970 at 01:00
Sometimes innovations are brilliant.
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By: mrmalaya - 19th October 2015 at 16:44 - Edited 2nd October 2019 at 11:40
I have been driven to ask the question because of the DARPA X Plane competition for a VTOL UAV capable of 300-400kt cruise:
https://en.wikipedia.org/wiki/VTOL_X-Plane
Some of the entries are shown here:
[ATTACH=CONFIG]241282[/ATTACH] Boeing
[ATTACH=CONFIG]241280[/ATTACH] LM Sikorsky
[ATTACH=CONFIG]241281[/ATTACH] Karem
[ATTACH=CONFIG]241283[/ATTACH] Aurora Flight Sciences
Of these the last one has caught my eye, featuring a wing full of electric motors driven by the power from the RR engine in a hybrid set up.
In the world of aviation there is little that hasn't been tried before, but with some of the layouts using technology first tried in the 50s (Boeing/Sikorsky), is it not time to try something new?