Eli kun tiedät levypinnaksi muutetun vastuksen voit katsoa NOMOGRAFISTA mitä se liikkuu ja milla teholla.
Olen näemmä joskus selvittänyt nämä itselleni; http://max3fan.blogspot.fi/2009/03/frontal-area-vs-flat-plate-equivalent.html
Blogini koneessa on 10 kertaa pienempi levypinta vastus kuin tässä; Specifications (P-51D Mustang)
Data from Erection and Maintenance Manual for P-51D and P-51K.[82] The Great Book of Fighters,[83] and Quest for Performance[84]
General characteristics
Crew: 1
Length: 32 ft 3 in (9.83 m)
Wingspan: 37 ft 0 in (11.28 m)
Height: 13 ft 4½ in (4.08 m:tail wheel on ground, vertical propeller blade.)
Wing area: 235 sq ft (21.83 m²)
Empty weight: 7,635 lb (3,465 kg)
Loaded weight: 9,200 lb (4,175 kg)
Max. takeoff weight: 12,100 lb (5,490 kg)
Powerplant: 1 × Packard V-1650-7 liquid-cooled supercharged V-12, 1,490 hp (1,111 kW) at 3,000 rpm;[85] 1,720 hp (1,282 kW) at WEP
Zero-lift drag coefficient: 0.0163
Drag area: 3.80 sqft (0.35 m²)
Aspect ratio: 5.83
Performance
Maximum speed: 437 mph (703 km/h) at 25,000 ft (7,600 m)
Cruise speed: 362 mph (580 km/h)
Stall speed: 100 mph (160 km/h)
Range: 1,650 mi (2,755 km) with external tanks
Service ceiling: 41,900 ft (12,800 m)
Rate of climb: 3,200 ft/min (16.3 m/s)
Wing loading: 39 lb/sqft (192 kg/m²)
Power/mass: 0.18 hp/lb (300 W/kg)
Lift-to-drag ratio: 14.6
Recommended Mach limit 0.8
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Näiltä RCUniversen kavereilta löytyy NOMOGRAFI !
http://www.rcuniverse.com/forum/forumid_76/p_2/tmode_1/smode_1/tt.htm