Abstract: An igniter holder is designed for use with a model rocket engine for temporarily fixing the igniter in the ignition cavity of the model rocket engine in preparation for launch.

Abstract: A reusable, semi-flexible molded model rocket engine igniter holder is used to hold an electrically activated igniter in intimate contact with the exposed surface of the model rocket engine propellant until the rocket engine propellant is ignited by passing electrical current through the igniter. The igniter holder, which is inserted in the throat cavity of the rocket engine, is preferably molded with a series of ribs around its periphery which impart a holding force keeping the electrical igniter in place in the engine throat.

Abstract: Apparatus in kit form for the assembly of a model rocket having a body tube, fins, and propellant mount, wherein each fin has a root portion at a radially inner-most end for mountingly extending through slots apertured in the body tube and for mounting engagement with the propellant mount. The body tube is apertured with slots for mountingly receiving the root portions of respective fins. The propellant mount telescopically mounts within the body tube and mountingly seats the fin roots. In one embodiment, a plurality of mounting brackets is arranged for assembly with one another for forming the propellant mount. The mounting brackets have radially-extending mounting recesses for engaging and positioning a fin root.

Abstract: A weight holder for removable and replaceable attachment to the nose portion of a toy aircraft. The weight holder is adapted to be integrally mounted to a protruding nose portion of a wing panel on a toy aircraft. The weight holder has opposed clamping jaw portions connected by a hinge element. The facing surfaces of at least one jaw has a weight-seating chamber for receiving a weighted object which is to be secured to the aircraft by the weight holder.