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The new project aircraft VP 12. Ukraine

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Alex Aero UA

Well-Known Member
Joined
May 6, 2020
Messages
113
Location
Ukraine, Kiev
We carry out testing of the thermostat of the liquid cooling system. Stabilizer and elevator after trimming. Elevator trim panels after polymerization.
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Assembling the control system shaft in the fixture. Pre-installation of the VP12 wing spars.
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Alex Aero UA

Well-Known Member
Joined
May 6, 2020
Messages
113
Location
Ukraine, Kiev
Manufacturing of the lower matrix of the engine cowl. VP12 aircraft flap plating matrix marking.
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Preliminary measurement of the thickness of the adhesive seam between the power pack and the VP12 wing skin.
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Speedboat100

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Joined
Nov 8, 2018
Messages
1,800
Location
Europe
We do not have small taper ratio, but the fall characteristics do not deteriorate due to the application of aerodynamic and geometric wing twist, wing strake and slotted ailerons. The plane will be securely parachuted without the tendency to fall on the wing.
With regard to wing area and wing load, I will give some examples for comparison. VP12 has a wing area of 9.37 m², a maximum take-off weight of 482kg, a wing load of 51.44 kg/m².
H36 DIMONA has a wing area of -15.24 m², maximum take-off weight of 770kg, load per wing - 50.52 kg/m².
The advanced version of the H36 aircraft DA20 KATANA has a wing area of -11.61 m², maximum take-off weight of 800kg, load on the wing - 68.9 kg/m².
Therefore, such area and load is chosen by us not by accident, it is necessary to get high speed in the motor glider mode at transitions.
To illustrate the above, I can give you an example of a modern glider that uses water ballast of up to 200 kg of water to increase wing load and speed accordingly. Because whoever goes through first wins.
We also took care to reduce the drop speed at a small wing area (9.37 m² ), due to the application of a high degree of wing mechanization throughout the wing, as well as the use of a high-bearing wing profile. This allows to process the ascending flows at low speeds. And by removing mechanization, you get a significantly higher cruising speed.
How many degrees of geometric twist do you have on it ?
 

Alex Aero UA

Well-Known Member
Joined
May 6, 2020
Messages
113
Location
Ukraine, Kiev
Checking the balance of the elevator.
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Pasting reinforcement into the ribs of the wing tank.
Installation of the wing power set in the device.
Fitting the technological cover of the cockpit canopy.
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Alex Aero UA

Well-Known Member
Joined
May 6, 2020
Messages
113
Location
Ukraine, Kiev
Forming the box of the aircraft parachute rescue system. Luggage compartment shelves molding. Rudder pre-hitch.
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Готовые нервюры крыла самолета VP12. Разметка матрицы капотов двигателя. Сварка педалей путевого управления.
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Lendo

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Joined
Feb 6, 2013
Messages
576
Location
Brisbane
It would be a Laminar Airfoil, like the NACA 6 series or the Riblett Airfoils - which are very similar.
George
 

Retiree

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Joined
Nov 29, 2010
Messages
97
Location
USA
Hi George,
Your wing looks very thin. What is the thickness to chord ratio of the airfoil section?
Thanks again.
Doug
 

Alex Aero UA

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Joined
May 6, 2020
Messages
113
Location
Ukraine, Kiev
What airfoil section are using for the wing? Thanks.
Doug
Regarding the wing profile, unfortunately, I cannot give you the name of the profile. Because the set of wing profiles was developed by our company. Based on the HQ 3.5 / 14 profile. But we have subjected it to a deep modernization. The thickness of the profile and the trailing edge of the profile (trimming), as well as the rear part of the profile, where the aileron and flap are located, have been changed.IMD 029-b airfoil__hq3514.jpg
 
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Lendo

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Joined
Feb 6, 2013
Messages
576
Location
Brisbane
Many Airfoils are today tailored to mission requirements and that's good but can be an expensive exercise - but modifiable when tested and found not optimum.
A bit above my pay grade I'm afraid.
George
 
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