AggieDave 6 #1 January 9, 2004 I'm curious if there's anything I need to think of, in the difference between a helicopter jump and a balloon jump. See, we have a helicopter coming to Aggieland this weekend for jumping and I wanted to be prepaired.--"When I die, may I be surrounded by scattered chrome and burning gasoline." Quote Share this post Link to post Share on other sites
skydivexxl 0 #2 January 9, 2004 Don't jump up! Blog Clicky Quote Share this post Link to post Share on other sites
councilman24 36 #3 January 9, 2004 You may have more people in the air in with low airspeed and little time to separate. Depending on altitude, forward speed and number exiting at once freefall/opening collisions may be more of a risk. Also may have people exiting both sides facing away from each other and not aware of each other in the air. Especially watch out for low timers who want to open high and may not be efficient trackers.I'm old for my age. Terry Urban D-8631 FAA DPRE Quote Share this post Link to post Share on other sites
panzwami 0 #4 January 9, 2004 yeah, I had a guy track the wrong direction away from the helicopter and open directly beneath me. He got turned around during freefall and tracked 180 degrees from the direction he should have tracked. I dunno if this was directly related to the helicopter itself, or just to the fact that he was inexperienced and just made a mistake, but it's still something for which to watch out. Matt ----- Quote Share this post Link to post Share on other sites
GARYC24 3 #5 January 9, 2004 Balloon: quieter, early morning lift-offs, altitude 4500' most cases (or less) Helicopter: higher altitude, noisy, seatbelts need re-hooked before jumping, prices: nearly the same Quote Share this post Link to post Share on other sites
AggieDave 6 #6 January 9, 2004 Quoteprices: nearly the same Sort of, I haven't had a lot of experience with them, but I know that the helicopter is going to be considerably cheaper then the balloon I got to jump. Thanks for all the good info guys!--"When I die, may I be surrounded by scattered chrome and burning gasoline." Quote Share this post Link to post Share on other sites
riddler 0 #7 January 9, 2004 The pilot may ask you to not jump off the strut - just fall off. It's like a pendulum under the rotors, and if you jump, the body of the helicopter has a tendency to swing back, making it more difficult for the pilot to control. Have fun!Trapped on the surface of a sphere. XKCD Quote Share this post Link to post Share on other sites
DBCOOPER 1 #8 January 9, 2004 Quotejust fall off especially if its a small helicopter.Aerodynamics, its just like a balloon jump except you get to exit right over a landing area that the pilot picks,not Mother Nature.Replying to: Re: Stall On Jump Run Emergency Procedure? by billvon If the plane is unrecoverable then exiting is a very very good idea. Quote Share this post Link to post Share on other sites
councilman24 36 #9 January 10, 2004 Quote..."except you get to exit right over a landing area that the pilot picks,not Mother Nature. I didn't think you (DBCOOPER) cared about the spot? "Anywhere over the northwest is fine."I'm old for my age. Terry Urban D-8631 FAA DPRE Quote Share this post Link to post Share on other sites
ChileRelleno 0 #10 January 10, 2004 Pretty similar to balloon jumps but noisier, better spots and usually cheaper. Being prepared means bringing lots of money, cause you'll want to jump it again and again and again.......... Typicaly you'll receive a quick briefing before boarding about seatbelts, exit order and keeping the aircraft balanced (especially on smaller copters). Exits are usually done simultaneously from both sides of the copter in balanced groups 2,4 ect... And you will usually exit from the skid facing in holding onto either your refastened seatbelt or the door frame to facilitate balanced exit. Awareness of others at breakoff is essential. Helicopter jumps ROCK! ChileRelleno-Rodriguez Bro#414 Hellfish#511,MuffBro#3532,AnvilBro#9, D24868 Quote Share this post Link to post Share on other sites
Jimbo 0 #11 January 10, 2004 I've jumped three different helicopters to date, each had different exit procedures. Ask the pilot, he'll be able to give you the straight poop. - Jim"Like" - The modern day comma Good bye, my friends. You are missed. Quote Share this post Link to post Share on other sites
Unstable 8 #12 January 10, 2004 I've got 5 chopper jumps to date. My advise? Chopper pilot have no freaking idea how to spot, what spotting is, or why they should give you a decent spot. They don't take kindly to input when I asked them to go a little farther So I could at least jump out upwind.=========Shaun ========== Quote Share this post Link to post Share on other sites
nightjumps 1 #13 January 10, 2004 Don't jump "up." Quote Share this post Link to post Share on other sites
helldog 0 #14 January 10, 2004 LMAO "dont jump up" classic anyways whats a typical altitude for a helicopter jump. And what type of helicopter have any of you all jumped out of ??? Blue ones Jim Quote Share this post Link to post Share on other sites
sducoach 0 #15 January 10, 2004 Dave, Anytime the airfoil is moving faster than the fuselage, you are in a helicopter or a crash. Blues, J.E.James 4:8 Quote Share this post Link to post Share on other sites
mjosparky 3 #16 January 10, 2004 QuoteDave, Anytime the airfoil is moving faster than the fuselage, you are in a helicopter or a crash. Blues, J.E. A helicopter does not fly by aerodynamic principles, it beats the air into submission. SparkyMy idea of a fair fight is clubbing baby seals Quote Share this post Link to post Share on other sites
Amazon 7 #17 January 10, 2004 QuoteA helicopter does not fly by aerodynamic principles, it beats the air into submission. Gee I was told by a chopper pilot that they really don't fly.. they are in a semi-controlled state of crash at all times they are off the ground. Quote Share this post Link to post Share on other sites
jakee 1,254 #18 January 10, 2004 nah, they're just so ugly the ground repells themDo you want to have an ideagasm? Quote Share this post Link to post Share on other sites
slug 1 #19 January 10, 2004 QuoteLMAO "dont jump up" classic anyways whats a typical altitude for a helicopter jump. And what type of helicopter have any of you all jumped out of ??? Blue ones Jim Blackhawks, way overpowered climb like a rocket Chinooks "the only aircraft known to man that can have a midair collision with itself. Nice tailgate, fast rate of climb, older models leak hydraulic oil like a pig, take baby step no runing or launching a tube. Huey's a classic we were told to keep our legs inside the bird on liftoff. If it has to land real quick the skids will collapse and your legs will get hurt. Most jumps were fom 12.5 but some chopper pilot's, and some choppers don't like going above "x" altitude in case the rubber band breaks they can auto rotate and land unless their to high and they run out of oil propr to landing. Then the bades stop turning and the chopper will fall like a rock. Btw we got about 75 jumps out of these birds and they never took off staight up or hovered on exit. Something about the loss of efficency and extra power required. Enjoy R.I.P. BTW $1/day . Quote Share this post Link to post Share on other sites
riggerrob 558 #20 January 10, 2004 Btw we got about 75 jumps out of these birds and they never took off staight up or hovered on exit. Something about the loss of efficency and extra power required. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> It is called "translational lift." As soon as forward airspeed exceeds 40 knots, the rotors stop behaving like a bunch of skinny blades flying in loose formation. In forward flight the rotor starts acting like one big wing, dramatically reducing power requirements and fuel consumption. The flip side is being able to take-off at much greater weights for the same horsepower. For example, a typical light helicopter may only be able to hover (out of ground effect) at 5,000 feet when its ceiling is more like 8,000 or 10,000 feet. Quote Share this post Link to post Share on other sites
WrongWay 0 #21 January 12, 2004 Quotejust fall off I myself have never done one , BUT I have awesome video of a friend of mine doing a Helicopter BASE (yes i realize its not quite BASE since it's not a fixed object, but it was really low and they all have BASE rigs...). I believe it was a six way, three on each side of the Heli, and that's what they did, was just fall off. I'll have to post it, it's pretty badass. Wrong Way D #27371 Mal Manera Rodriguez Cajun Chicken Ø Hellfish #451 The wiser wolf prevails. Quote Share this post Link to post Share on other sites
DBCOOPER 1 #22 January 12, 2004 QuoteIt is called "translational lift." A helicopter in a ground effect hover must induce all the airflow straight down thru the rotor system.Many factors are involved such as rotor system design,winds ect. A by product of the creation of lift by the rotor system with induced flow straight down thru the rotor system is vortices on the outboard portion of the rotor blades.These vortices cause the rotor system to produce less lift.As the helicopter starts to move foward the rotor system begins to outfly these vortices.Between 16 to 24 knots the rotor disc has completely outflown the vortices and begins to produce more lift.It takes the same amount of power to hover a helicopter as it does to climb.An out of ground effect hover requires even more power and creates even larger vortices. My 2 cents.Replying to: Re: Stall On Jump Run Emergency Procedure? by billvon If the plane is unrecoverable then exiting is a very very good idea. Quote Share this post Link to post Share on other sites
WrongWay 0 #23 January 12, 2004 Damn dude, either you know a LOT about this subject, or you're very good at talking out of your ass. Either way, kudos!! Wrong Way D #27371 Mal Manera Rodriguez Cajun Chicken Ø Hellfish #451 The wiser wolf prevails. Quote Share this post Link to post Share on other sites
Reginald 0 #24 January 14, 2004 So, is this the Allouit II (okay I know i blew the spelling). I think it is going to be in Dallas this comming weekend, although the weather is looking like crap. So how was it?"We've been looking for the enemy for some time now. We've finally found him. We're surrounded. That simplifies things." CP Quote Share this post Link to post Share on other sites
ames_i 0 #25 January 14, 2004 As a chopper pilot myself, I think you'll find the ones that aren't spot friendly are not fond of jumping themselves....Find a pilot that jumps and you'll get a good spot!!! Just show me the door.... Quote Share this post Link to post Share on other sites
