Monoplane

Rand KR-2

TerryLeave a comment

The KR-2 is a two-place version of the KR-1 and is generally similar in construction. The low wings are removable, the main gear is retractable and the tailwheel is steerable. With a stock 1600-cc engine, cruise speed is 140 mph. With a 2100-cc turbocharged VW conversion, cruise is 180 mph at 3200 rpm. To achieve simplicity of construction, the airplane is designed so that no machining or welding is required in building the airframe. The cost and construction time is minimized by using a combination of wood, polyurethane foam, fiberglass cloth and epoxy resin. The result is a structurally strong, clean, hard surface and an exceptionally fast airplane for the power used. All new premolded fiberglass parts have been developed to speed the building time for the KR-2. Luxury upholstery kits are also available and can be simply snapped into position.

First flown in July 1974.

Ken Rand, in 1974, commenced marketing plans and kits for the single seat KR-1 and two-place KR-2. Instant acceptance saw 9000 plans and kitsets sold within the first five years.

Rand KR-2 Builds

As with all KR’s, the KR-2 is equipped with removable wings, and choice of retractable, fixed conventional, or tricycle gear.

Variation:
Boshoff SB2

Gallery

Engine: VW 2100, 76 hp
Length: 14′ 6″
Wing Span: 20′ 8″
Total Wing Area: 80 sq. ft.
Empty weight: 480 lbs.
Gross weight: 900 lbs.
Useful load: 420 lbs.
Baggage capacity: 35 lb
Take off distance: 350 ft.
Landing distance: 900 ft.
Stall Speed: 52 mph / 42 kt
Maximum Speed, Vne: 200 mph / 160 kt
Cruise Speed: 180 mph
Max flap speed: 96 kt / 120 mph
Range: 1600 miles (35 gal. fuel)
Rate of Climb (light): 1200 fpm
Rate of Climb (gross): 800 fpm @ 60 kt / 75 mph
Service ceiling: 15,000 ft.
Fuel: 12-60 US gal.
Fuel consumption: US3.8 gph
Seats: 2
Width at Hips: 38 in
Width at Hips: 36 in
Landing gear: Fixed conventional or trigear, or retractable conventional

Engine: VW 1834
Length: 14ft 4in
Span: 20ft 2in
Wing area: 82 sq.ft.
Empty wt: 480 lb
Gross wt: 900 lb
Top speed: 180 mph
Cruise speed: 170 mph
Stall speed: 42 mph
Seats: 2 side-by-side

Engine: VW 1600
Empty wt: 420 lbs
Max wt: 800 lb
Fuel cap: 12 USG
Top speed: 150 mph
Cruise speed: 140 mph
Stall: 42 mph
Seats: 2
Length: 14 ft 4 in
Wing span: 20 ft 2 in

Rand KR-1B

TerryLeave a comment

The KR-1B motorglider is essentially a stock KR-1 with longer wings and a bigger tail. For a wing curve, an RAF-48 standard KR-1 airfoil was used for the center section and the GA(W)-2 airfoil for the replacement outer panels. The outer wing section provides a clean and responsive curve for use with a spoiler/flap control, permitting deadstick landings at 70 mph TAS. Where the stock KR-1 wingspan is 172″, the motorglider wingspan measures 27′ from tip to tip, thereby increasing square footage from 64 to 91.

Power is supplied by a 60-hp VW engine. Maximum cruise is 130 mph, and with 33 gallons of fuel, range is 950 miles while getting 29 mpg. At the standard 4-gph burn rate, 33 gallons should deliver 8.25 hours of flying at 120 mph for a range of 1,020 miles.

Engine: 60-hp VW
Wing span: 27 feet
Wing area: 91 sq.ft
Maximum cruise: 130 mph
Fuel capacity: 33 USgallons
Range: 950 miles
At 120 mph Endurance: 8.25 hours
At 120 mph Range: 1020 miles
Airfoil centre: RAF-48
Airfoil outer: GA(W)-2

Rand KR-1

TerryLeave a comment

Ken designed the KR-1 in 1972 using cutting edge building techniques that would later become the standard for modern aviation.

Rand KR-1 Article

The KR-1 is the single seat low wing retractable monoplane which is typically powered by smaller VW engines, up to the VW 2100. The KR-1B motorglider is a standard KR-1 with modified outer wing sections. With this simple wing conversion, the original KR-1 becomes an excellent self-powered glider.

Ken Rand, in 1974, commenced marketing plans and kits for the single seat KR-1 and two-place KR-2. Utilising spruce, foam and Dynal cloth in construction, these designs could be built in as few as 800 hours sparetime work. The clean lines and smooth finishes attainable with this technique meant reduced drag, resulting in higher speeds on less power. Retractable gear adds to its performance. The prototype KR 1 (first flown in February 1972) reached 150 mph in level flight, powered by a 36 hp converted VW car engine. Instant acceptance saw 9000 plans and kitsets sold within the first five years.

Gallery

Engine: VW 1834, 60 hp
HP range: 60-80
Length: 12′ 9″
Wing Span: 17′ 0″
Total Wing Area: 62 sq. ft.
Empty weight: 375 lbs.
Gross weight: 750 lbs.
Useful load: 375 lbs.
Baggage capacity: 20 lbs. max
Take off distance: 350 ft.
Landing distance: 900 ft.
Stall Speed: 52 mph
Maximum Speed: 200 mph
Cruise Speed: 180 mph
Range: 1400 miles
Rate of Climb (light): 1200 fpm
Rate of Climb (gross): 800 fpm
Service ceiling : 15,000 ft.
Fuel: 8-30 USgal.
Fuel consumption: 3.8 USgph
Landing gear: Fixed conventional or trigear, or retractable conventional
Seats: 1
Width at Hips: 21 in
Width at Hips: 19 in

Engine: 1835 VW
Span: 17’6″
Length: 15’9″
Empty Weight: 410 lb
Useful Load: 340 lb
Wing Area: 75 sq.ft
Seats: 1
Take Off Distance: 600 ft
Stall: 45 mph
Landing Speed: 58 mph
Cruise: 140 – 160 mph
Rate of Climb: 900 fpm

Ralph Santa Anna 001

TerryLeave a comment

The Santa Anna 001 is a 2 seat tandem touring motor glider with short cruise wings with double slotted flaps and optional long span soaring wings. Retractable tandem nose wheel gear and outriggers. Construction is mixed wood and composite. Yellow cedar structure, glass/kevlar flying surface, Okoume ply fuselage skins.

First flown on 10 April 2008, C-GPLC was owned by Paul Ralph, Victoria BC, Canada.

Engine: Continental A65
Prop: Home made
Cruise: 115 mph
Stall: 45mph

Rainbow Ranger

TerryLeave a comment

New in 2002 was the Ranger I from Rainbow Aviation. This design evolved from joining a Continental 65 hp engine to an ultralight wing and a Breezy airframe.

The landing gear is formed from the composite spring used in a Pontiac Trans Am. The wing and tail are all metal and the fuselage can be fabric covered if desired.

Rainbow Cheetah XLS

TerryLeave a comment

The Cheetah is the versatile 3-axis Microlight from Rainbow Aircraft, manufactured completely in South Africa.

Rated and tested to 560kg +6 -4g Wide range of engines and accessories available. The Cheetah has been approved by South African CAA for full PPL training and hour-building towards CPL.

The R&D team has been working on a Jabiru powered Cheetah. The first Cheetah with a Jabiru 80HP engine has performed its first test flight.

Engine: Rotax 582/99 UL, 65 hp
Gearbox reduction: 3.47 : 1
Propeller: 2 or 3 Blade
Fuel Consumption (at 80%): 14.5 l/hr
Wing span: 9600 mm
Wing Area: 13.25 sq.m
Chord: 1380 mm
Aspect Ratio: 7.01
Aircraft Length: 5670 mm
Aircraft Height (at Wing): 1900 mm
Empty Weight: 248 kg
Gross Weight: 560 kg
Useful Load: 312 kg
Load Factors: +6g -4g
Cockpit Height: 1370 mm
Cockpit Width: 1200 mm
Seats: 2
Luggage Compartment: 2 x 25 lt (max 35kg)
Fuel Capacity: 100L / 26gal
100L / 26gal
100L / 26gal
Doors (optional): 2
Take Off roll: 100 m
Landing Ground Roll: 120 m
Rate of Climb: 700 ft/min
Service Ceiling: 12000 ft asl
Max crosswind component: 32 mph
Cruise Speed (at 65%): 75 mph
Maximum level Speed: 100 mph
Max Speed (VNE): 125 mph
Glide Ratio: 10 : 1
Power Off Stall (with No flaps): 40 mph
Power Off Stall (with flaps): 35 mph
Roll Rate: 3 sec 45/45
Endurance (with reserve): 6.5 hrs
Range (with reserve): 500 miles

Engine: Rotax 912 UL, 80 hp
Gearbox reduction: 2.27 : 1
Propeller: 2 or 3 Blade
Fuel Consumption (at 80%): 12 l/hr
Wing span: 9600 mm
Wing Area: 13.25 sq.m
Chord: 1380 mm
Aspect Ratio: 7.01
Aircraft Length: 5670 mm
Aircraft Height (at Wing): 1900 mm
Empty Weight: 272 kg
Gross Weight: 560 kg
Useful Load: 288 kg
Load Factors: +6g -4g
Cockpit Height: 1370 mm
Cockpit Width: 1200 mm
Seats: 2
Luggage Compartment: 2 x 25 lt (max 35kg)
Fuel Capacity: 100L / 26gal
100L / 26gal
100L / 26gal
Doors (optional): 2
Take Off roll: 100 m
Landing Ground Roll: 100 m
Rate of Climb: 730 ft/min
Service Ceiling: 12000 ft asl
Max crosswind component: 32 mph
Cruise Speed (at 65%): 90 mph
Maximum level Speed: 105 mph
Max Speed (VNE): 125 mph
Glide Ratio: 10 : 1
Power Off Stall (with No flaps): 40 mph
Power Off Stall (with flaps): 35 mph
Roll Rate: 3 sec 45/45
Endurance (with reserve): 7.5 hrs
Range (with reserve): 670 miles

Engine: Rotax 912s ULS, 100 hp
Gearbox reduction: 2.27 : 1
Propeller: 2 or 3 Blade
Fuel Consumption (at 80%): 13 l/hr
Wing span: 9600 mm
Wing Area: 13.25 sq.m
Chord: 1380 mm
Aspect Ratio: 7.01
Aircraft Length: 5670 mm
Aircraft Height (at Wing): 1900 mm
Empty Weight: 274 kg
Gross Weight: 560 kg
Useful Load: 286 kg
Load Factors: +6g -4g
Cockpit Height: 1370 mm
Cockpit Width: 1200 mm
Seats: 2
Luggage Compartment: 2 x 25 lt (max 35kg)
Fuel Capacity: 100L / 26gal
100L / 26gal
100L / 26gal
Doors (optional): 2
Take Off roll: 80 m
Landing Ground Roll: 100 m
Rate of Climb: 900 ft/min
Service Ceiling: 14000 ft asl
Max crosswind component: 32 mph
Cruise Speed (at 65%): 100 mph
Maximum level Speed: 110 mph
Max Speed (VNE): 125 mph
Glide Ratio: 10 : 1
Power Off Stall (with No flaps): 40 mph
Power Off Stall (with flaps): 35 mph
Roll Rate: 3 sec 45/45
Endurance (with reserve): 7.0 hrs
Range (with reserve): 700 miles

Rahn Aircraft Corp Cyclogyro

TerryLeave a comment

An invention of William Rahn in collaboration with Gus Miller, formerly with the Zeppelin Works in Germany, this 1933 experimental aircraft was only 15 feet long, and carried two 6-foot span rotating wings on each side. Powered with a 240 hp supercharged Wright Whirlwind motor, the wings are disposed about a central axis and change their incidence so as to produce both lift and negative drag.

It was said to fly forwards at up to 100 mph without the aid of a normal propeller.

The two 6′ rotating wings on each side theoretically would cause the plane to rise or descend vertically, or fly laterally without a conventional propeller up to 100mph, but it is unrecorded if this 15′-long creation, registered NX13247, ever accomplished any of these feats.

RagWing RW19 Stork

TerryLeave a comment

A replica of the Fiesler Storch that qualifies as an LSA. First flown in August 1997.

Engine: 2si, 70 hp
HP range: 70-80
Length: 22 ft
Wing span: 32 ft
Wing area: 180 sq.ft
Fuel capacity: 20 USG
Empty weight: 497 lb
Gross weight: 1200 lb
Vne: 103 mph
Cruise: 75 mph
Stall: 15 mph
Range: 250 sm
Rate of climb: 1200 fpm
Takeoff dist: 30 ft
Landing dist: 30 ft
Seats: 2 tandem
Cockpit width: 40 in
Landing gear: tailwheel