Remotely Controlled, Impact-Resistant Model Helicopter

Abstract

A remotely-controlled impact-resistant model helicopter (RIMH) that is comprised of two major elements: a helicopter and a remote control unit. The helicopter includes a housing that encloses a first electronic control circuit that controls the operation of a receiver circuit connected to a receiving antenna, a main rotor blade motor, a tail rotor motor, an LED light circuit and a power source. The RIMH includes a coaxial main rotor assembly that includes a lower main rotor blade, an upper main rotor blade and a rotor blade stabilizer. Attached to the housing is a tail boom assembly that has attached the tail rotor motor that operates a rear rotor blade, and that has attached a horizontal stabilizer and a vertical stabilizer. The helicopter is controlled and remotely operated by a hand-held remote control unit that includes a second electronic control circuit that controls the application of various aerial maneuvers that are transmitted to the helicopter.

1 . A remotely-controlled impact-resistant model helicopter (RIMH) comprising:
 a) a housing having a front opening and an integrally attached upper section having a main rotor shaft bore, a rear section, a lower section, a right side section and a left side section,   b) a coaxial main rotor blade assembly having a main rotor blade shaft that is attached to the shaft of a main rotor blade motor located within said housing, wherein sequentially attached to the main rotor blade shaft is a lower main blade, an upper main blade and a rotor blade stabilizer,   c) a tail boom assembly having a front end attached to the rear section of said housing and a rear end having attached a tail rotor motor having a shaft to which is attached a horizontally oriented rear rotor blade,   d) a pair of landing skids, each attached to the lower section of said housing,   e) a first electronic control circuit located within said housing and having means for controlling the operation of said RIMH, and   f) a remote control unit having a second electronic control circuit having means for allowing an individual to remotely control the operation of said RIMH.   
     
     
         2 . The RIMH as specified in  claim 1  further comprising a plurality of air vents located on the upper section, the right side section and the left side section of said housing. 
     
     
         3 . The RIMH as specified in  claim 1  further comprising an impact-resistant front shield that is attached around the front opening of said housing. 
     
     
         4 . The RIMH as specified in  claim 3  wherein said front shield is aerodynamically shaped and simulates a pilot's canopy. 
     
     
         5 . The RIMH as specified in  claim 1  wherein said tail boom further comprises:
 a) a pair of tail boom struts each having a front end attached to the lower section of said housing, 
 b) a horizontal stabilizer, and 
 c) a vertical stabilizer 
 
     
     
         6 . A remotely-controlled, impact-resistant model helicopter (RIMH) comprising:
 A. said helicopter comprising:   a) a housing comprising:
 (1) an upper section having a main rotor shaft bore, 
 (2) a front opening having a lower edge from where extends outward a platform that terminates at a front edge, 
 (3) a rear section having a tail boom bore that includes a bushing, 
 (4) a lower section, 
 (5) a right side section, and 
 (6) a left side section, 
   b) a main rotor blade motor attached to the lower section of said housing, wherein the shaft of the main rotor blade motor is in alignment with the main rotor shaft bore located on the upper section,   c) a coaxial main rotor blade assembly comprised of a main rotor shaft having an upper end, and a lower end that is rotatably inserted into the main rotor shaft bore located on the upper section, wherein the shaft has sequentially attached a lower main blade, an upper main blade and a rotor blade stabilizer attached to the upper end of the main rotor shaft, wherein the lower end of the main rotor shaft is attached to the shaft of the main rotor blade motor,   d) a tail boom assembly comprising:
 (1) a front end that is inserted into the tail boom bore located on the rear section of said housing, a rear end, an upper surface, a lower surface and sides, 
 (2) an LED light circuit, 
 (3) a horizontal stabilizer attached to the upper surface, 
 (4) a vertical stabilizer attached to one of the sides of said tail boom, and 
 (5) a tail rotor motor attached to the rear end of said rail boom wherein the motor has a shaft to which is attached a horizontally oriented rear rotor blade, 
   e) a pair of landing skids, each having a front end and a rear end, wherein each skid is attached to a pair of struts that arc respectively attached to the lower section of said housing,   f) a first electronic control circuit located on the platform that extends from the front opening of the housing, said circuit having means for controlling the operation of a receiver circuit, the main rotor blade motor, the tail rotor blade motor and the LED light circuit,   g) an impact-resistant front shield that is attached to the front opening of said housing, wherein said shield is dimensioned to cover and protect the elements controlled by said first electronic control circuit, and   B. a remote control unit having means for controlling the operation of said RIMH.   
     
     
         7 . The RIMH as specified in  claim 6  further having a plurality of air vents located on the upper section, the right side section and the left side section of said housing. 
     
     
         8 . The RIMH as specified in  claim 6  further comprising a bushing that extends from the tail boom bore, wherein the bushing is dimensioned to frictionally accept the front end of said tail boom assembly. 
     
     
         9 . The RIMH as specified in  claim 6  further comprising a pair of tail boom struts, wherein each strut has a front end attached respectively to the lower section of said housing, and a rear end attached to the respective sides adjacent the horizontal stabilizer. 
     
     
         10 . The RIM as specified in  claim 6  wherein the coaxial main rotor blade assembly further comprises:
 a) a lower blade hub having an upper section, a lower section, a centered main rotor shaft bore, a first end, a second end, and a means for fixedly attaching the lower blade hub to the main rotor shaft, 
 b) a first lower blade having an outer end and an inner end rotatably attached between the upper section and the lower section of the first end of the lower blade hub, 
 c) a second lower blade having an outer end and an inner end rotatably attached between the upper section and the lower section of the second end of the lower blade hub, 
 d) an upper blade hub having an upper section, a lower section, a centered main rotor shaft bore, a first end, a second end and a means for fixedly attaching the upper blade hub to the main rotor shaft, 
 e) a first upper blade having an outer end and an inner end rotatably attached between the upper section and the lower section of the first end of the upper blade hub, and 
 f) a second upper blade having an outer end and an inner end rotatably attached between the upper section and the lower section of the second end of the upper blade hub. 
 
     
     
         11 . The RIMH as specified in  claim 6  further comprising a resilient damper that is inserted into the front end and the rear end of each landing skid. 
     
     
         12 . The RIMH as specified in  claim 6  wherein the impact-resistant front shield is made of a resilient plastic. 
     
     
         13 . The RIMH as specified in  claim 12  wherein said shield is designed to simulate a pilot's canopy. 
     
     
         14 . The RIMH as specified in  claim 6  wherein the LED light circuit is comprised of:
 a) an LED located on said front shield, and 
 b) a plurality of LEDs connected in a parallel-series configuration along the lower surface of said tail boom assembly. 
 
     
     
         15 . The RIMH as specified in  claim 6  wherein said receiver circuit operates at a frequency of 27.115 Mhz. 
     
     
         16 . The RIMH as specified in  claim 6  wherein said receiver circuit is connected to a receiving antenna attached to one of the struts attached to the landing skids. 
     
     
         17 . The RIMH as specified in  claim 6  wherein said housing includes a power source comprised of a rechargeable battery having an output ranging from 3 to 5 volts d-c. 
     
     
         18 . The RIMH as specified in  claim 17  wherein said power source is controlled by an on-off switch located on one of the side sections of said housing. 
     
     
         19 . The RIMH as specified in  claim 6  wherein said remote control unit is further comprised of a second electronic control circuit connected to a power source attached to a power switch, wherein aid circuit controls the transmittal outputs corresponding to direction, throttle, lights and trim.