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- Path: sparky!uunet!psinntp!heimdall!sgidq4!dqwelch
- From: dqwelch@sgidq4.sdrc.com (Mike Welch)
- Newsgroups: rec.models.rc
- Subject: Re: Rocket powered R/C (Estes Astro Blaster)
- Message-ID: <270@heimdall.sdrc.com>
- Date: 4 Jan 93 15:08:53 GMT
- References: <42995@sdcc12.ucsd.edu>
- Sender: news@heimdall.sdrc.com
- Organization: SDRC
- Lines: 74
-
- In article <42995@sdcc12.ucsd.edu>, dlou@sdcc3.ucsd.edu (Dennis Lou) writes:
- |>
- |>
- |> Anyone have any experience with the Estes Astro Blaster?
-
-
- Yes, I built one scratch from a friend's plans.
-
- |>
- |> I was thinking about getting either this one or the Sig Ninja.
- |>
- |> The Astro Blaster sounds really intriguing because it is a canard and
- |> can fly rocket boost, slope, or you can use a dummy rocket motor and
- |> plug in a .049. This would work out great for me since I can fly it on
- |> the slope when I'm at school (Torrey Pines site), fly it under power
- |> at a schoolyard when I'm home for the holidays, and fly it rocket boost
- |> when I want to show off to my friends.
-
- I built mine without the rocket motor. My firend had a "blast" with his
- under rocket power. (Sorry for the pun.)
-
- |>
- |> My concerns are that
- |> 1> I don't know how well it will fly on the slope. For that matter, I don't
- |> know how well it will fly period. (I already read the Dec `92 MAN review,
- |> but they never mentioned anything about slope performance or much about glide
- |> characteristics)
-
- I thought I could improve the glide by changing the airfoil to an Epler 374.
- I was wrong. The canard seemed to be too small. I changed the incidence in
- order to increase the lift. This resulted in very poor glide. I was
- generally disappointed in the glide. Even at Torrey Pines. I could keep it
- up. It would roll nice. but..
-
- |>
- |> 2> The elevator/aileron canard configuration prevents stall maneuvers (i.e.
- |> snap rolls and tumbles)
- |>
-
- I could barely do a loop. Too much pitch stability.
-
- The fuse was big and boxy. Too much drag to retain energy.
-
- |> 3> the .049 pusher configuration means you can't use a clunk tank (the
- |> clunk will be facing the wrong way) and the QRC/Texaco/Black Widow
- |> engines won't go inverted which, combined with #2, means you can't do many
- |> good stunts under power.
-
- The glide was alot worse inverted. Too much drag from the canard.
-
- I still might add an .049. That should make up for the poor glide.
-
- |>
- |> Anyone have any comments on this plane or how to solve #3?
- |>
- |> --
- |> Dennis Lou || "But Yossarian, what if everyone thought that way?"
- |> dlou@ucsd.edu || "Then I'd be crazy to think any other way!"
- |> [backbone]!ucsd!dlou |+====================================================
- |> dlou@ucsd.BITNET |Steve Jobs and Steve Wozniak went to my high school.
-
-
- Thanks,
-
- Mike
-
- ******************************************************************************
- Mike Welch * "Gun laws go against Darwin's Theory.
- SDRC * Let stupid people kill each other."
- 2000 Eastman Drive *
- Milford, Ohio 45150 * "Governments should not mandate the
- Tel: (513) 576-2514 * use of safety belts. Let Natural
- Email: Mike.Welch@sdrc.com * Selection work." - me
- ******************************************************************************
-