4 ms·
You sure that's what 'ejection' means in this context? I was under the impression that the reason ejection from a jet fighter is so strenuous is because the ej
by Teever 3y ago
You sure that's what 'ejection' means in this context?
I was under the impression that the reason ejection from a jet fighter is so strenuous is because the ejector seat needs to eject fast enough to clear the tail of the jet which may be travelling at several hundred miles an hour.
- throwup238 3y agoWhat else would ejection mean? By definition it's an active source of thrust that is powerful enough to push the pilot clear of the cockpit before they rag doll against the rest of the airplane. Regardless of geometry it has to be powerful enough to overcome the thrust of the airplane and air resistance all within a split second. You can try some sort of mechanical jack in the box mechanism but it's going to have a terrible thrust/mass ratio if it works at all. The vast majority of planes focus on #2, the gliding mechanism, which gives pilots the time to bail out out from a side door and allows for much more forgiving aerodynamics (thrust is up, pilot falls down). For a consumer flying car you're really going to want zero-zero ejection seats that can survive engine failure during takeoff. That's the most dangerous phase of flight and the seat has to be extra powerful (to get the user high enough for the parachute to work).
- Teever 3y ago> “Ejection” means a rocket motor under the seat and a 50% chance of spinal damage Would "Ejection" from a much slower aircraft require a rocket motor that has a 50% chance of spinal damage?
- throwup238 3y ago> Would "Ejection" from a much slower aircraft require a rocket motor that has a 50% chance of spinal damage? Yes.
- Teever 3y agoCan you explain why an equally damaging ejection system is needed for a jet fighter and a personal flying car type aircraft?
- throwup238 3y agoBecause that rate of injury is for trained Air Force pilots in peak physical condition. Once you start ejecting the untrained average people with BMI of 25+ you’re going to need bigger propulsion and they’re going to get injured. The human body simply isn’t made to withstand force.
- Teever 3y agoHow many Gs are we talking? people with a BMI of over 25 seem quite fine on rollercoasters.
- throwup238 3y ago12-20 g. Some of the more intense ejection seats in fighter jets are 25+ g. Most rollcoasters are under 4g and they max out around 6g.
- Teever 3y agoCan you show me your math that says we need 12-20g for an ejector seat on a consumer flying car?