HED

[Bat-mite]

Basically DD with no payload tube, right? Main is in NC, drogue in booster, NC coupler is the AV bay. Am I understanding that correctly?

Was thinking about getting a Formula 75 to stand up next to my Formula 200. Newer ones from Madcow are HED. Would be fun.

 

[noffie79]

You got it

 

[rms]

Basically DD with no payload tube, right? Main is in NC, drogue in booster, NC coupler is the AV bay. Am I understanding that correctly?

Was thinking about getting a Formula 75 to stand up next to my Formula 200. Newer ones from Madcow are HED. Would be fun.

You are correct.
Just building a Wildman 98mm Interceptor AAD now that is also HED. I think I will complete as HED but separate for the drogue at the body midpoint. I haven't seen a HED rocket fly and I'm a little concerned about the whole body being one piece and separated at the Avbay which is essentially the nose cone. That is a lot of rocket to come down together! I have read that a 9-12" drogue will keep the whole body from orientating so as to become ballistic and maybe so, I'm just not comfortable with that yet.
I will be attaching the upper body to the avbay with flathead screws and the tube will be shear pinned at the body midpoint coupler. So in the future I will be able to configure it as it was originally was designed to be flown as HED

Greg

 

[samb]

There are probably many examples here but I've bookmarked Chris Attebery's LOC Doorknob build with HED.

https://www.rocketryforum.com/showthread.php?67422-LOC-DoorKnob-HED-DD-build&highlight=doorknob


His company makes components for HED as well that may be of interest.

 

[NateLowrie]

You are correct.
Just building a Wildman 98mm Interceptor AAD now that is also HED. I think I will complete as HED but separate for the drogue at the body midpoint. I haven't seen a HED rocket fly and I'm a little concerned about the whole body being one piece and separated at the Avbay which is essentially the nose cone. That is a lot of rocket to come down together! I have read that a 9-12" drogue will keep the whole body from orientating so as to become ballistic and maybe so, I'm just not comfortable with that yet.
I will be attaching the upper body to the avbay with flathead screws and the tube will be shear pinned at the body midpoint coupler. So in the future I will be able to configure it as it was originally was designed to be flown as HED

Greg

I bring both my Formula 200 and the 4in patriot down with everything but the nose connected. I haven't had an issue yet. The fin can pretty much hits dirt completely vertical. Put the right size drogue in it and you're fine.

 

[sharkbait]

Basically DD with no payload tube, right? Main is in NC, drogue in booster, NC coupler is the AV bay. Am I understanding that correctly?

Was thinking about getting a Formula 75 to stand up next to my Formula 200. Newer ones from Madcow are HED. Would be fun.

I guess you didn't see my Formula 75 fly Sunday, HED with an Top Flight 18" X-Form drogue and a 54" Spherachute main. Three 2-56 shear pins hold the nose on.

 

[Bat-mite]

I guess you didn't see my Formula 75 fly Sunday, HED with an Top Flight 18" X-Form drogue and a 54" Spherachute main. Three 2-56 shear pins hold the nose on.

I didn't see much of anything, between launching and recovering my stuff, and RSOing for awhile.

 

[Nytrunner]

The idea sounds really cool, I'm just worried about higher speed lights where pressure distortions near the nose could mess with the altimeter.