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VSR - SR-1 "SNOSHOO" for FlightGear - GPL v.2

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VSR - SR-1 "SNOSHOO" for FlightGear - GPL v.2

Postby cobe571 » Sat Jun 22, 2019 8:16 am

Hello I'm really glad to introduce the VSR - SR-1 "SNOSHOO"

In the history of Formula one/Midget air racing there is one aircraft that reigns supreme as the most famous of all: SHOESTRING. No other design has won the Championship as many times as has this thoroughbred that began life in 1949 when it was created and built by Vincent Ast of California. Throughout time it has been admired by thousands of racing fans and was flown by racing immortals Bob Downey, John Paul Jones, and Ray Cote, just to name a few. Originally, race speeds of 170 -180 mph gave way to 200, 220, 240, and even 250 mph speeds as this design remained a champion. This led to a fine pedigree as it was modified, developed, and evolved through decades of racing and with the incorporation of advancing technology has led to a highly tuned racing aircraft. One true virtuoso of the evolutionary process was Ken Stockbarger, and along with Paul White and Ray Cote they derived ideas that took the best features of SHOESTRING and applied them to the ULTIMATE EVOLUTION: the SR-1 SNOSHOO. While it must be remembered that the SR-1 iS NO SHOestring, it truly is a result of the successful racing experiences of the Masters. VSR is currently taking these ideas, adding its own, and bringing the SR-1 SNOSHOO into existence.

SR-1 CONSTRUCTION
The design uses conventional, welded 4130 steel tubing for the fuselage (truss) structure, unquestionably the best material in terms of durability, crashworthiness, cost, ease of incorporating design changes, reparability and its efficiency in overall strength-to-weight. From the spinner aft to the cockpit the SR-1 employs a molded, lightweight epoxy/carbon-fiber cowling. For non-racing use, VSR plans to make available a lower cost fiberglass cowling with more generous air inlet/outlet areas. From the cockpit aft, conventional wood bulkheads and stringers are covered with traditional doped fabric. Cockpit dimensions can be varied to accommodate different sized pilots.

The wing and tail surfaces of the SR-1 are all-wood construction. Aircraft-quality Sitka spruce is used for the laminated spars. The ribs are simple band sawed spruce with thin plywood webs, and aircraft-quality mahogany plywood is used for the skin. Final finishing applied over all plywood surfaces employs very lightweight glass/epoxy with light coats of primer/filler, followed by the final color coats. Also all control surfaces are spruce-and-plywood in construction and are statically mass-balanced. A unique, totally internal, cable system is used for rudder control, while ailerons and elevators are actuated by push-pull tubes with ball-bearing/ball-joints at all connections.

The balance of the SR-1's construction includes: 5.00 x 5 wheels, tires, and brakes, simple aluminum spring-leaf gear, optional steerable tailwheel, pre-formed bubble racing canopy, and welded aluminum fuel tank.

SR-1 SPECIFICATIONS and PERFORMANCE
Wingspan 239.0"
Overall length 215.0"
Wing area 66 sq.ft.
Empty weight 530 lbs.
Gross weight(racing) 746 lbs.
Fuel Capacity(racing) 6 gal.
Power(stock O-200, @ S.L.) 100 hp.
Wing loading 11.3 lbs./sq. ft.
Power loading 7.5 lbs./hp.
Aspect ratio 6.0
Cockpit Height 35.0"
Cockpit Width 22.0"
Powerplant: 1 × Continental O-200A four cylinder, air-cooled, four stroke aircraft engine, 100 hp (75 kW)
Propellers: 2-bladed wooden, fixed pitch

The following performance estimates are calculated using the SR-1 in a typical racing configuration and with sea-level standard conditions, unless otherwise noted.

Stall speed 65 mph
Rate of Climb 2500+ fpm
Typical cruise speed(7500' MSL) 220 mph
Top speed(level flight, race engine) 280+ mph
Never-exceed speed 350 mph
Roll rate 180 deg./sec.
G Limits +/- 8.

http://www.snoshoo.com/

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Re: VSR - SR-1 "SNOSHOO" for FlightGear - GPL v.2

Postby Johan G » Sat Jun 22, 2019 11:21 am

It sure looks like a bred and borne full blood racer too.
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Re: VSR - SR-1 "SNOSHOO" for FlightGear - GPL v.2

Postby cobe571 » Sat Jun 22, 2019 12:31 pm

This 3D model is still incomplete. I started modeling years ago on request. The project was then abandoned. It needs an FDM. Are there volunteers?
"According to the laws of aerodynamics, the bumblebee can't fly either, but the bumblebee doesn't know anything about the laws of aerodynamics, so it goes ahead and flies anyway."
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