It is important with any plane to look at ACTUAL performance data. The
general layout of the Vision is as follows:
Wing Span 21' 8" (25'
8" with EX wing)
Wing Area 85 Sq Ft (96
Sq ft with EX wing)
Standard fuel capacity -- 22 gal (Option
for total of 40 in wing and additional 15 in header)
Cockpit width 40" and there is a modification available for 4 more inches
. Currently all our builders are making 44" cockpits. This shoulder width
also continues through the elbow and hip area.
Cockpit height sized for 6' 3" person and turtledeck can be raised 3"
beyond that
Sea Level 75% cruise 157 mph as measured with GPS (this
is with 100 hp engine and SP wing. SP with 160 hp cruises 175 at Sea level and
over 200 mph at 8000 ft)
Sea Level wide open obtains only 90% power with the overpitched prop we now
have but the plane still obtains 168 mph true .
Vne 207 mph indicated
Va 143 mph indicated
Vd 231 mph indicated
Vf 105 mph
The Vision uses the 63a415 root airfoil and 63a412 tip airfoil as used on several Piper products and chosen for its gentle stall and non critical curve.
Landing over
50 ft requires 1200 feet and takeoffs currently require
1500 . Please note that this is listed the way that certified aircraft do to
indicate approach and climb over a 50 foot obstacle. The usual "homebuilt"
way of listing ground roll would indicate about 800 ft takeoff for the 100 hp
and 400 ft takeoff for the 160 hp with both having a 900 ft ground roll on landing.
Keep the landing over50 ft obstacle numbers in mind when you see simple ground
rolls listed.
Stall with flaps is 54 mph but touchdown can be slightly slower with ground
effect.
Slotted flaps are currently in development which will slow landing speed, boost
short field performance, and increase allowable gross weight.
Climb rate solo with full fuel is 1400 fpm at sea level on 85 degree day with
this prop and the economical Subaru engine.
Weight should be at 850 lb empty, the prototype is close to 900 but we learned
some lessons that are saving weight in the second one now. Intitally the gross
weight has been set at 1350 lb. pending further testing and the aerobatic weight
is at 1250 lb. (With
SP wing, engines over 115 hp raise gross to 1450. With "EX" wing and
engines to 120 hp gross is 1500 and for engines over 120 hp gross is 1600. +6/-4
g rating is always at 1250 lb.)
All of the above base figures are with the small 100hp Subaru engine and the "SP" wing. Engines up to 300 lb and 160 hp are acceptable. Remember that heavier engines will add to your empty weight The base weight on the small Subaru is approximately 215 lbs with all fluids. Please See Sean Ponsonby's page for his reports on performance with larger engines
