Science Links
Space Links
-
Posted Lately
Tags
- ares
- ares i
- Armadillo
- Augustine
- china
- Climate
- co2
- coal
- composite
- Conceptual Design
- CRgis
- cruise
- Delta
- Depot
- EELV
- ESA
- ESAS
- Finland
- global warming
- Haisunäätä
- Helsinki
- Homebuilt
- hybrid
- hypersonic
- ISS
- Langley
- lftr
- lunar lander challenge
- Masten
- NASA
- nuclear
- orion
- pollux
- python
- RLV
- rocket
- sats
- skylon
- SpaceX
- Suborbital
- Sukhoi
- Thorium
- ULA
- VTVL
- wood
Tag Archives: Tradeoff
The Martin Jetpack and Its Design Tradeoffs
[youtube=http://www.youtube.com/watch?v=kLccl_NWDQE] Here’s the technical information. It uses a piston engine to spin two smallish propellers. At first look it seems inefficient: the propellers are so small (diameter 1.7 ft so radius is 0.26 m) so the air mass flow is low … Continue reading
Posted in airplane, engines, Motivation, Science Links, Transportation
Tagged Design, Jetpack, Martin, Tradeoff
Leave a comment