Difference between revisions of "Airframes"
| Line 30: | Line 30: | ||
* Fully Charged Cell Voltage: 1.35-1.4 V (unloaded) | * Fully Charged Cell Voltage: 1.35-1.4 V (unloaded) | ||
* Depleted Cell Voltage: 1.0V | * Depleted Cell Voltage: 1.0V | ||
'''Lithium-Ion''' | |||
* Energy/weight: 160 Wh/kg | |||
* Nominal Cell Voltage: 3.6 / 3.7 V | |||
* Fully Charged Cell Voltage: 4.2V | |||
* Lowest Cell Discharge Voltage Before Damage: 2.4v to 3.0v | |||
'''Lithium-Ion Polymer (LiPo)''' | '''Lithium-Ion Polymer (LiPo)''' | ||
Revision as of 12:03, 3 September 2007
Multiplex FunJet
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The FunJet is a new electric pusher-prop model from Multiplex made of durable and CA safe Elapor foam. It offers plenty of room internally for avionics in an attractive package. More details... |
Misc Airframe Notes
MotoCalc is an Electric Flight Performance Prediction program for Windows and is available for a 30 day free trial. MotoCalc has an internal database of thousands of motors/props/etc. and can make power/flight predictions based on data input.
Electric Motor Calculator by Diversity Model Aircraft is a free online tool for matching props to motors to batteries.
Propeller Thrust Calculator is a free online calculator to give thrust from given propeller and RPM or vice versa.
Battery Specs
Nickel Cadmium (NiCd)
- Energy/Weight: 40-60 Wh/kg
- Nominal Cell Voltage: 1.2V
- Fully Charged Cell Voltage: 1.2V
- Depleted Cell Voltage: 0.8-1.0V
Nickel Metal Hydride (NiMh)
- Energy/Weight: 30-80 Wh/kg
- Nominal Cell Voltage: 1.2V
- Fully Charged Cell Voltage: 1.35-1.4 V (unloaded)
- Depleted Cell Voltage: 1.0V
Lithium-Ion
- Energy/weight: 160 Wh/kg
- Nominal Cell Voltage: 3.6 / 3.7 V
- Fully Charged Cell Voltage: 4.2V
- Lowest Cell Discharge Voltage Before Damage: 2.4v to 3.0v
Lithium-Ion Polymer (LiPo)
- Energy/weight: 130-200 Wh/kg
- Nominal Cell Voltage: 3.7V
- Fully Charged Cell Voltage: 4.23V
- Lowest Cell Discharge Voltage Before Damage: 3.0V
Typical Power Requirements
- 70W/kg (35W/lb) for sedate flying from hand launch
- 100W/kg (50W/lb) for ground take off
- 150W/kg (75W/lb) for performance / aerobatics
Mass Figures
Provided below are some weights to aid in estimating an all up weight for your uav
- Tiny13 1.1 Weight: 25g (0.88oz)
- IR Sensor Head: 5g (0.18oz)
- XBee Pro: 4g (0.14oz)
- Hitec HS-55 Servo: 8g (0.28)
- Brushless Outrunner 250W: ~90g (~3oz)
- FunJet assembled, no hardware: 165g (5.82oz)
- FMA Encore 5ch Receiver: 11g (0.40oz)
- Castle Creations Phoenix 35: 24.5g (0.9oz)