View Single Post
  #1   Spotlight this post!  
Unread 10-01-2013, 11:52
John's Avatar
John John is offline
Registered User
AKA: John Gillespie
FRC #1153 (Roborebels)
Team Role: Mechanical
 
Join Date: Sep 2011
Rookie Year: 2009
Location: Walpole MA
Posts: 71
John is just really niceJohn is just really niceJohn is just really niceJohn is just really niceJohn is just really nice
Re: pic: The Cow that Jumped over the moon!

Using the method from that website:

Area = #rotors * diameter^2 * pi/4
Area = 4 * 14in^2 * pi/4 = 616 in^2 = 4.28 ft^2

Power will be limited by the battery and main breaker, with a maximum continuous power of:

Power = voltage* current = 12 V * 120 A = 1440 W = 1.93 HP

PL = Power/Area = .452 HP/ft^2

TL = 8.6859 * PL^(-.3107) = 11.12 lb/HP

Thrust = Power * TL = 11.12 lb/HP * 1.93 HP = 21.5 lb

The battery alone is 12 lb. Each CIM is 2.8 lb. If I did the math correctly, I don't think you can fly.
Reply With Quote