Keith Sproul of North Brunswick. USA, built the Sproul 48K-16. Registered N-48KX, the airship was powered by a ½ VW, and first flew in 2003.
Sproul 48K-16
Piston
Springfield Cadet
The 1931 Springfield Cadet was designed and built in Springfield, Oregon by Jim McManiman. It was owned and flown by motorcycle dealer Clarence Saville in 1935. It was acquired by the Society in 2003 and was rebuilt by Al Sherman as a static display at the Museum.
Spring Sprint WS.202
Landing gear can be changed from nose to tail wheel in one hour. Engine options include VW or O-200.
Engine: Subaru EA81, 118 hp
HP range: 65-125
Height: 6.7 ft
Length: 19.5 ft
Wing span: 27 ft
Wing area: 130 sq.ft
Empty weight: 650 lb
Gross weight: 1130 lb
Fuel capacity: 12 USG
Top speed: 115 mph
Cruise: 110 mph
Stall: 350 mph
Range: 45 sm
Rate of climb: 600 fpm
Takeoff dist: 500 ft
Landing dist: 500 ft
Service ceiling: 10,000 ft
Seats: 1
Landing gear: nose or tail wheel
Spring, W.
1996: 4493 Tremineer Ave, Burlington, ON L7L 1H8, Canada.
LSA builder
Spratt Control wing
Dr G A Spratt’s first powered airplane with pivoting wings was a single-place, open cockpit biplane, built in 1912, and powered by a 40hp Curtiss V-8 air-cooled engine.
The second controlwing was a single-place open cockpit high-wing monoplane built in 1934, powered by a 25hp Jacobs outboard motor modified to air cooling (now in EAA Museum), and registered N14763. With an empty weight of 180 lb, it was the first controlwing airplane to do any real flying.
The 1939 Controlwing further development of Spratt’s controllable-wing theory was a two place, open cockpit, mid-wing flying boat. A 65hp Lycoming pusher engine was mounted in the bow, driving a prop by a long shaft. The wing is mounted over a twin-tailed, boat-shaped fuselage.
The 1947 version, N3915A, had a 65hp Continental mounted aft of the cockpit. Spratt’s project continued well into the 1970s with several successful flying boats. Plans marketed to home-builders; 80 sets sold by 1982.
The 1973 Controlwing 105 N49888 was a two-place cabin, high-wing monoplane landplane with a 60ci Mercury marine engine. The span was 22’0″ and length 12’6″. Spratt’s continuance of design numbers from his days at Convair sometimes lead to confusion of this plane with Convair-Stinson 106 Skycoach.
The 1964 Controlwing 106 N910Z was a two-place, open cockpit high-wing monoplane flying boat.
Circa 1975 the Controlwing 107 was a two-place, open cockpit high-wing monoplane flying boat, powered by a modified 80hp Mercury marine engine. The span was 24’0″, length 17’0″, and useful load: 500 lb.
Seats: 2
Spotsy Model 1
Designed by Emil Peters, the Spotsy Model 1 NX549V open-cockpit biplane crashed at Elyra OH after engine failure on 4 May 1930 while piloted by Lewis Dryer. The registration was cancelled on 19 May 1930. It cost $1,750 less motor.
Engine: 80hp Siemens-Halske
Wingspan: 26’0″
Seats: 2
Sport Performance Aviation Panther
The Sport Performance Aviation LLC Panther is a versatile, mid-sized, single seat low wing Sport or LSA aerobatic airplane with quick fold wings. The Panther is designed for handling manners and gentleman aerobatics, combining looks, handling and critical build elements meant to keep the cost down.
The base kit was $15,995 and that includes pre-drilled aluminum wing skins, a steel fuselage structure that’s been fully welded and powder coated, the canopy and landing gear legs. The Panther is built around the Corvair six-cylinder engine and that helps keep costs down; however, other engines in the 80–160 hp range can be used. Powerplant options include Continental C-85 thru 0-200, Lycoming 0-235 thru 0-320 (Panther Sport), UL power, Jabiru 3300.
Two Panther versions were available: one with 93 square feet of wing for LSA compliance and one with a smaller, 85-square-foot wing for better performance. Total build cost was $28–50k.
Construction
6061 aluminum / flush blind rivets (solid optional)
4130 steel tube construction from seat back to firewall. All critical attachment points like Landing gear, wing pin, engine mount, 5 point harness, ballistic chute, rollover bar, control Hard points etc. will be welded in the fixture. This allows quick accurate construction of all Critical points.
Skinned in AL
Quick easy to build tail cone rivets/bolts on to the forward fuselage
Simple control surface design
Simple strong wing spar with only seven components per spar (plus bolts/rivets)
The Panther features
Quick (2 min or less) easy single person wing fold, no controls to disconnect
Fit in 18ftx7x7 space (trailer) when folded
Large cockpit with adjustable rudder pedals and seat back, room for big guys and a parachute
Forward (2cu ft) and rear baggage area
Pilot rollover protection
Ballistic chute capable
Bubble canopy replaceable by small windshield and skirt for open cockpit flying
excellent visibility
Panther
Engine: Corvair/3.0L, 100hp @ 3100 rpm
Propeller: Sensenich/Wood over Composite, 2-blade
Wingspan: 23 ft 6 in
Maximum gross weight: 1115 lb
Typical empty weight: 725 lb
Typical useful load: 425 lb
Fuel capacity: 27 gal
Full-fuel payload: 262 lb
Wing loading: 11.8 lb/sq. ft
Baggage capacity: 40 lb
Max speed: 170 mph
Cruise speed: 165 mph @8000ft
Stall speed (landing configuration): 46 mph
Stall speed (clean): 51 mph
Maximum rate of climb: 1500 fpm
Takeoff distance (to 50 ft agl): 1000 ft
Landing distance (from 50 ft agl): 1200 ft
Seats: 1
Cabin width: 28 in
Sport Flight International Astra
Designed by Allistair Wilson and built in Bloomfield, Indiana, the Astra trike is built to exceed the Light Sport Aircraft standards. The Astra has wide comfortable seating and can be used for serious cross country flying or simply enjoying the scenery.
The Astra Trike is manufactured in the American Mid West and has been developed using British technology. Two engine options were available: the HKS 700E – 60 BHP – 2 cylinder – 4 stroke or the 4 cylinder- 4 stroke – Rotax 912. The Astra Trike has been designed and manufactured to comply with the requirements of BCAR Section S Issue 2, and the American Sportplane aircraft design category.
Many parts for the wing are manufactured by Sport Flight International, including the wing sail, storage bag, wing bag and packing set. Sport Flight International also manufacture the structural wing frame tubes for the Astra Trike. Bill Sherlock test flew the first complete Astra Trike at Shawnee airport, Bloomfield Indiana, on the 26th April 2005.
The Astra Trike is the product of years of research and development, bringing to America a world class trike, capable of effortless cross country flying, with the reliability of a four stroke engine at an affordable 2009 Price.
The Astra 912 is powered by the 80 hp Rotax 912 four cylinder four stroke engine, allowing the trike to cruise at 70 mph, and burn just over 3.0 gallons per hour. Maximum level speed is 80 mph, VNE is 90 mph. Stall speed occurs at 32 mph. Rate of climb 800-1100 feet per minute depending on load and density altitude. Take off run 180 – 250 feet depndent on load and dnsity altitude. Astra 15.6 m double surface wing. Composite front fairing with windshield, Instrument panel, and composite wheel pants.
Dual rear brakes with parking brake, Warp Drive composite 3-blade propeller, Polyurethane shock absorber suspension system, Fabric skirt, 11.5 gallon fuel tank, Rotax mechanical fuel pump system, Cast aluminum spoked wheels, Wide composite seat with folding backrest, Chrome Moly steel maingear, Rear seat nose-wheel steering. Dual stainless steel muffler system, Pod storage bag, 10-row oil cooler, all aluminum radiator.
Standard instrument fit on the Astra 912 are Airspeed Indicator, Sensitive Altimeter, Fuel gauge, Digital engine monitoring which includes dual CHT and quadruple EGT, Hour meter, Flight timer, Voltage, Oil temperature, Oil pressure, Tachometer and In-dash Compass. Available Options include: Ballistic Recovery System Parachute, Vertical Speed Indicator, Fuel computer, Lynx Radio antenna, Dual Strobe system, High intensity headlight, Complete Lynx system including, Helmets, Vizors, Headsets, Intercom (self or aircraft powered), Radio, PTT cable, Windshield extension, Gas lift strut to assist in lifting the wing during set-up and takedown.
The Astra HKS is powered by the 60 hp Japanese HKS twin cylinder four stroke engine. This allows the trike to cruise at 55 – 65 mph, while burning just over 2.2 gallons per hour. Maximum level speed is 75 mph, VNE is 90 mph. Stall speed occurs at 32 mph Rate of Climb is 400 – 800 feet per minute depending on flight loads and density altitude. Astra 15.6 m double surface wing Composite front fairing with windshield and Instrument panel, composite wheel pants.
Dual rear brakes with parking brake, composite 3-blade propeller with reinforced leading edge, Polyurethane shock absorber suspension, Fabric skirt, 11.5 gallon fuel tank, Electric and mechanical fuel pump system, Cast aluminum spoked wheels, Wide composite seat with folding backrest, Chrome Moly steel maingear, Rear seat nose-wheel steering. Standard instrument fit on the Astra HKS are Airspeed Indicator, Sensitive Altimeter, Fuel gauge, Dual CHT, Dual EGT, RPM , Hourmeter, Voltmeter and In Dash Compass. Available Options include: Digital engine monitoring with warning light for out of range engine parameters, Jet Hot coating on the Muffler, Ballistic Recovery System Parachute, Vertical Speed Indicator, Fuel computer, Lynx Radio antenna,Dual Strobe system, headlight, Complete Lynx system including, Helmets, vizor, headsets, intercom (self or aircraft powered), Radio, PTT cable, Windshield extension, Gas lift strut to assist in lifting the wing during set-up and takedown.
The Astra S2 is powered by the 100 hp Rotax 912S four cylinder four stroke engine. A reliable, efficient and powerful engine that allows the trike an effortless cruise anywhere between 55 and 100 mph, and burn just over 3.5 gallons per hour. Maximum level speed is 105 mph, VNE is 115 mph. Stall speed occurs at 38 mph. Rate of climb is normally between 1000 -1300 feet per minute depending on load and density altitude. Take off run is typically 300 – 450 feet again dependent on load and density altitude. Astra S2 10.6 m double surface wing Composite front fairing with extended two piece windshield and Instrument panel, composite Pylon fairing and stabiliser wheel pants. Electric trim, Dual rear brakes with parking brake, composite 3-blade propeller with reinforced leading edge and prop spinner, Polyurethane maingear shock absorber suspension, Fabric skirt, 11.5 gallon fuel tank, Rotax mechanical fuel pump system, Cast aluminum spoked wheels, Wide composite seat with folding backrest, Chrome Moly steel maingear, Rear seat nose-wheel steering. Standard instrument fit on the Astra S2 are Airspeed Indicator, Sensitive Altimeter, Fuel gauge, Digital engine monitoring which includes dual CHT and quadruple EGT, Hour meter, Flight timer, Voltage, Oil temperature, Oil pressure, Tachometer and In-dash Compass. Available Options include: Ballistic Recovery System Parachute, Vertical Speed Indicator, Fuel computer, Lynx Radio antenna, Dual Streamlined Strobe System, High intensity headlight, Complete Lynx system including, Helmets, Vizors, Headsets, Intercom (self or aircraft powered), Radio, PTT cable, Windshield extension, Gas lift strut to assist in lifting the wing during set-up and takedown. Instructor Training Bars.
The Astra 503 is powered by the 54 hp Rotax 503 two cylinder four stroke engine. It powers the trike to a cruise speed between 55 and 65 mph, burning just over 4 gallons per hour. Maximum level speed is 70 mph, VNE is 90 mph. Stall speed occurs at 32 mph. Rate of climb is normally 250 -700 feet per minute depending on load and density altitude. Take off run is typically 200- 400 feet again dependent on load and density altitude. Astra A1 15.6 m double surface wing Composite front fairing with extended two piece windshield and Instrument panel, and wheel pants. Dual rear brakes with parking brake, composite warp drive 3-blade propeller, Polyurethane maingear shock absorber suspension, Fabric skirt, 11.5 gallon fuel tank, Rotax mechanical fuel pump system, Cast aluminum spoked wheels, Wide composite seat with folding backrest, Chrome Moly steel maingear, Rear seat nose-wheel steering. Standard instrument fit on the Astra 503 are Airspeed Indicator, Fuel gauge, Digital Altimeter and VSI, digital engine monitoring which includes dual CHT and dual EGT, Hour meter, Flight timer, Voltage, Tachometer and In-dash Compass. Available Options include: Ballistic Recovery System Parachute, Analogue Altimeter and Vertical Speed Indicator, Lynx Radio antenna, Dual Strobe System, High intensity headlight, Complete Lynx system including, Helmets, Vizors, Headsets, Intercom (self or aircraft powered), Radio, PTT cable, Windshield extension, Gas lift strut to assist in lifting the wing during set-up and takedown. Instructor Training Bars.
The Astra 103 is powered by the Rotax 503 two cylinder two cycle engine. This allows the trike a cruise speed between 55 and 63 mph, and burn just over 4 gallons per hour. Maximum level speed is 63 mph, VNE is 90 mph. Stall speed occurs at 25 mph. Rate of climb is normally between 300 and 500 feet per minute depending on load and density altitude. Take off run is typically 300 – 450 feet, again dependent on load and density altitude. Astra 103 10.6 m double surface wing. Composite front fairing with windshield and Instrument panel, and stabiliser wheel pants., Wooden 2 -blade propeller with protected leading edge, Bungee maingear shock absorber suspension, Fabric skirt, 5 gallon fuel tank, Rotax mechanical fuel pump system, Cast Nylon wheels, Wide fabric seat, Chrome Moly steel maingear. Standard instrument fit on the Astra 103 are Airspeed Indicator, Digital Altimeter and VSI, engine monitoring which includes dual CHT and dual EGT, Hour meter, Flight timer, Voltage, Tachometer. Available Options include: Ballistic Recovery System Parachute, Lynx Radio Antenna, Dual Streamlined Strobe System, High intensity headlight, Complete Lynx system including, Helmet, Vizor, Headset, Radio, PTT cable, Windshield extension, Gas lift strut to assist in lifting the wing during set-up and takedown.
Sport Flight Sky Pup
Single seat single engine high wing monoplane with two axis control. Conventional tail. Pitch control by elevator on tail; yaw control by fin mounted rudder; no separate roll control; control inputs through stick for pitch and pedals for yaw. Cantilever wing; wing profile; double surface. Undercarriage has two wheels with tailskid. Wood/foam fuselage, partially enclosed. Engine mounted at wing height driving tractor propeller.
Announced in 1983, the Sky Pup is a development of Steven Wood’s one off ultralight called the Blue Light Special. With the Sky Pup, the accent is on simplicity and low build cost; the aircraft is only sold in the form of plans, the company reckoning that the machine can be built for less than $1000 excluding power pack.
The design principle is to use foam to carry shear loads and wood to carry bending loads. Ribs and fuselage panels are cut from foam and then bonded to wood capstrips and gussets, with plywood covering for the leading edge and dope and fabric covering for the rest of the flying surfaces.
Engine is a Cuyuna 215RR coupled to the company’s own propeller via a reduction drive. Unlike most two axis aircraft, the Sky Pup is not purely stick controlled. The centre-mounted stick moves fore and aft only, to control pitch, while pedals are used for rudder control. The plans cost $50 in the US, $52 in Canada, $56 elsewhere.
Engine: Rotax 277
Empty wt.: 205 lbs
Max wt.: 400 lbs
Height 5’2”
Width 74”
Length 15’11”
Wing span: 31 ft
Wing area: 130 sq.ft.
Wing loading: 3.1 lbs/sq.ft
Power loading: 14.3 lbs/hp
Max speed: 61 mph
Cruise: 57 mph
Stall: 26 mph
Vne: 69 mph
Seats: 1
Vne 69 mph
L/D 12:1
Minimum sink rate 260 fpm
Takeoff roll 200’
Climb rate 450 fpm
Load factors +6, -3 G’s
Engine: Cuyuna 215RR, 20 hp at 5500 rpm
Propeller diameter and pitch 58 x 24 inch, 1.47 x 0.61 m
Reduction 2.3/1
Power per unit area 0.15 hp/sq.ft, 1.7hp/sq.m
Length overall 15.9 ft, 4.85 m
Height overall 4.3ft, 1.32m
Wing span 31.0ft, 9.45m
Mean chord 4.2ft, 1.28m
Dihedral 6.5 deg
Total wing area 130 sq.ft, 12.1 sq.m
Wing aspect ratio 7.4/1
Empty weight 195 lb, 88kg
Max take off weight 400 lb, 181kg
Payload 205 lb, 93kg
Max wing loading 3.08 lb/sq.ft, 15.0kg/sq.m
Max power loading 20.0 lb/hp, 9.1kg/hp
Load factors design; +6.0
Never exceed speed 69mph, 111 kph
Cruising speed 55mph, 88kph
Stalling speed 26mph, 42kph
Max climb rate at sea level 450 ft/min, 2.3 m/s
Best glide ratio with power off 12/1
Sport Cub S2
The Sport Cub S2 is literally a reinvention of the classic Piper Super Cub. With stick and rudder flying, complimented with modern touches such as adjustable seating, cabin heating and standard AmSafe airbags. There’s enough space for up to 120 pounds of cargo. With extensive weight saving carbon fiber and a 100 Horsepower Continental engine, it offers a climb rate comparable to aircraft with much more power and are still capable of 100 mph and a range of over 450 miles.
Engine Continental O-200A 100 hp
All Aero 