in 1921, the Dodge Brothers built a boat named the SS Delphine and it had a whopping 3000 HP. So, how much horsepower would a Challenger SRT® Hellcat Redeye Widebody need to tow the SŚ Delphine up the industry standard: Davis Dam Grade Climb?
Pro Tips • Davis Dam assumed grade = 7% • Air density is sea level conditions (.002377 slugs/ft3) w(weight) of the SS Delphine + trailer + Redeye = 3,922,000+ 150,000+ 4451 Lbs • Crr = coefficient of rolling resistance = .015 • Assume Combined CDA is 1555 ft 2 • SAE J2807 (Davis Dam Grande Climb) - min speed is 40mpg (59 ft/s) • F(drag) = 1/2p x V^2 x C(d)A • F(rolling resistance) = W x COS X Crr • F(weight) = W x sin • F(sum) = F(drag) + F(rr) + F(weight) • P = F(sum)XV • convert to horsepower = P(1hp/550ft lbf/sec)
Pro Tips • Davis Dam assumed grade = 7% • Air density is sea level conditions (002377 slugs/ft3) • w(weight) of the SS Delphine + trailer + Redeye = 3,922,000+ 150,000+ 4451 Lbs • Crr = coefficient of rolling resistance = .015 • Assume Combined CDA is 1555 ft2 • SAE J2807 (Davis Dam Grande Climb)- min speed is 40mpg (59 ft/s) • F(drag) = 1/2p x V^2 x C(d)A • F(rolling resistance) = W x cos x Crr • F(weight) = W x sin • F(sum) = F(drag) + F(rr) + F(weight) . P = F(sum)XV • convert to horsepower = P(1hp/550ft lbf/sec)
& Question 4 In 1921, the Dodge Brothers built a boat named the SS Delphine, with a whopping, 3000 horsepower. How much horsepower would a Challenger SRT Hellcat RedEye need to tow the SS Delphine to meet the industry standard SAE specs for the Davis Dam Grade Climb? CGC HORSEPOWER CHALLENGE POWERE SI POWER DOLLARS
F dong = 1/2 p x V x GA Fredling resistance = W x cose x Cor Fish W x sino PeFXV Assumption Davis Dam assumed grade = 7% plair density) = 002377 slugift W (weight) of the SS Delphine + trailer + RedEye - 3922000 + 150000 + 4451 lbs Crr - coefficient of rolling resistance - 2015 CA (combined) = 1555 ft SAE 12807 (Davis Dam Grade Climb) - min speed is 40mph (59 ft/s) Convert to Horsepower co lle 50 ft lbf/sec
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