Schreder RS-15

__NOTOC__ Infobox Aircraft
name=RS-15


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type=Club (formerly 15 metre) class Sailplane
manufacturer=Homebuilt
designer=Richard Schreder
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The RS-15 is a Richard Schreder-designed metal Racing Class sailplane that was offered as a kit for homebuilding during the 1970s and 1980s.

Description

The dominating aesthetic feature of the RS-15 is its pod-and-boom fuselage. The forward fuselage is a composite molding, and the aft portion is a 6" diameter aluminum tube. The V-tail is essentially the same as on other contemporary Schreder sailplanes, differing only in detail design from that of the HP-18.

Unlike Schreder's HP-series gliders, the RS-15 was intended to achieve more modest performance, sacrificing performance for a shortened build time.

Early RS-15 models featured wings that were essentially the same as the HP-16, and using the same one-piece machined aluminum I-beam wing spar. Later units were supplied with wing kits nearly identical to those of the HP-18, using that ship's riveted aluminum box spar. Unlike the HP-18, however, RS-15 examples usually lack the flap/aileron interconnect that adjusts the neutral aileron deflection to match that of the flap in the range of -10 to +10 flap deflection.

Major features:
*Pod-and-boom fuselage with relatively deep cockpit
*V-tail that folds upwards for easy storage
*Wing structure composed of spars with caps pre-machined from solid aluminium plate and aluminium wing skins bonded to closely spaced foam ribs
*Fiberglass fuselage pod, wing tip skids and tail fairings
*Tubular aluminum aft fuselage
*Winglets added by some homebuilders
*Water ballast carried inside the hollow aluminium wing spars
*Typical Schreder trailing edge flaps/airbrakes

pecifications

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crew=One pilot
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length m=6.71
length ft=22
length in=0
span m=15.00
span ft=49
span in=2
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wing area sqm=10.5
wing area sqft=113
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aspect ratio= 21.4
empty weight kg=200
empty weight lb=440
gross weight kg=426
gross weight lb=940
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max speed kmh=240
max speed mph=150
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glide ratio= 38
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sink rate ms= 0.6
sink rate ftmin= 126

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References

* [http://www.soaridaho.com/Schreder/ Schreder Designs webpage]
* [http://www.sailplanedirectory.com/ Sailplane Directory]

ee also

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